1 | #pragma rtGlobals=3 // Use modern global access method and strict wave access. |
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2 | #pragma version=1.0 |
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3 | #pragma IgorVersion=6.1 |
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4 | |
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5 | |
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6 | |
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7 | // |
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8 | // functions to apply corrections to the detector panels |
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9 | // |
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10 | // these are meant to be called by the procedures that convert "raw" data to |
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11 | // "adjusted" or corrected data sets |
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12 | // |
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13 | // may be relocated in the future |
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14 | // |
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15 | |
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16 | |
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17 | |
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18 | // |
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19 | // detector dead time |
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20 | // |
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21 | // input is the data array (N tubes x M pixels) |
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22 | // input of N x 1 array of dead time values |
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23 | // |
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24 | // output is the corrected counts in data, overwriting the input data |
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25 | // |
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26 | // Note that the equation in Roe (eqn 2.15, p. 63) looks different, but it is really the |
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27 | // same old equation, just written in a more complex form. |
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28 | // |
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29 | // TODO |
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30 | // -- verify the direction of the tubes and indexing |
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31 | // x- decide on the appropriate functional form for the tubes |
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32 | // x- need count time as input |
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33 | // -- be sure I'm working in the right data folder |
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34 | // -- clean up when done |
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35 | // -- calculate + return the error contribution? |
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36 | // |
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37 | Function DeadTimeCorrectionTubes(dataW,data_errW,dtW,ctTime) |
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38 | Wave dataW,data_errW,dtW |
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39 | Variable ctTime |
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40 | |
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41 | // do I count on the orientation as an input, or do I just figure it out on my own? |
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42 | String orientation |
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43 | Variable dimX,dimY |
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44 | dimX = DimSize(dataW,0) |
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45 | dimY = DimSize(dataw,1) |
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46 | if(dimX > dimY) |
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47 | orientation = "horizontal" |
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48 | else |
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49 | orientation = "vertical" |
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50 | endif |
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51 | |
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52 | // sum the counts in each tube and divide by time for total cr per tube |
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53 | Variable npt |
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54 | |
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55 | if(cmpstr(orientation,"vertical")==0) |
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56 | // this is data dimensioned as (Ntubes,Npix) |
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57 | |
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58 | MatrixOp/O sumTubes = sumRows(dataW) // n x 1 result |
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59 | sumTubes /= ctTime //now count rate per tube |
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60 | |
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61 | dataW[][] = dataW[p][q]/(1-sumTubes[p][0]*dtW[p]) //correct the data |
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62 | |
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63 | elseif(cmpstr(orientation,"horizontal")==0) |
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64 | // this is data (horizontal) dimensioned as (Npix,Ntubes) |
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65 | |
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66 | MatrixOp/O sumTubes = sumCols(dataW) // 1 x m result |
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67 | sumTubes /= ctTime |
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68 | |
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69 | dataW[][] = dataW[p][q]/(1-sumTubes[0][q]*dtW[q]) |
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70 | |
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71 | else |
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72 | DoAlert 0,"Orientation not correctly passed in DeadTimeCorrectionTubes(). No correction done." |
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73 | endif |
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74 | |
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75 | return(0) |
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76 | end |
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77 | |
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78 | |
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79 | |
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80 | ///// |
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81 | // |
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82 | // non-linear corrections to the tube pixels |
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83 | // - returns the distance in mm (although this may change) |
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84 | // |
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85 | // c0,c1,c2,pix |
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86 | // c0-c2 are the fit coefficients |
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87 | // pix is the test pixel |
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88 | // |
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89 | // returns the distance in mm (relative to ctr pixel) |
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90 | // ctr is the center pixel, as defined when fitting to quadratic was done |
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91 | // |
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92 | Function V_TubePixel_to_mm(c0,c1,c2,pix) |
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93 | Variable c0,c1,c2,pix |
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94 | |
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95 | Variable dist |
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96 | dist = c0 + c1*pix + c2*pix*pix |
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97 | |
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98 | return(dist) |
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99 | End |
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100 | // |
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101 | //// |
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102 | |
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103 | |
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104 | |
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105 | |
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106 | |
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107 | //////////// |
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108 | // TODO: all of below is untested code |
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109 | // copied from SANS |
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110 | // |
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111 | // |
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112 | // TODO : |
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113 | // -- DoAlert 0,"This has not yet been updated for VSANS" |
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114 | // |
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115 | //performs solid angle and non-linear detector corrections to raw data as it is "added" to a work folder |
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116 | //function is called by Raw_to_work() and Add_raw_to_work() functions |
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117 | //works on the actual data array, assumes that is is already on LINEAR scale |
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118 | // |
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119 | Function DetCorr(data,data_err,realsread,doEfficiency,doTrans) |
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120 | Wave data,data_err,realsread |
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121 | Variable doEfficiency,doTrans |
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122 | |
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123 | DoAlert 0,"This has not yet been updated for VSANS" |
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124 | |
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125 | Variable xcenter,ycenter,x0,y0,sx,sx3,sy,sy3,xx0,yy0 |
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126 | Variable ii,jj,dtdist,dtdis2 |
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127 | Variable xi,xd,yd,rad,ratio,domega,xy |
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128 | Variable lambda,trans,trans_err,lat_err,tmp_err,lat_corr |
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129 | |
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130 | // Print "...doing jacobian and non-linear corrections" |
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131 | |
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132 | NVAR pixelsX = root:myGlobals:gNPixelsX |
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133 | NVAR pixelsY = root:myGlobals:gNPixelsY |
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134 | |
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135 | //set up values to send to auxiliary trig functions |
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136 | xcenter = pixelsX/2 + 0.5 // == 64.5 for 128x128 Ordela |
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137 | ycenter = pixelsY/2 + 0.5 // == 64.5 for 128x128 Ordela |
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138 | |
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139 | x0 = realsread[16] |
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140 | y0 = realsread[17] |
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141 | sx = realsread[10] |
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142 | sx3 = realsread[11] |
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143 | sy = realsread[13] |
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144 | sy3 = realsread[14] |
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145 | |
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146 | dtdist = 1000*realsread[18] //sdd in mm |
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147 | dtdis2 = dtdist^2 |
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148 | |
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149 | lambda = realsRead[26] |
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150 | trans = RealsRead[4] |
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151 | trans_err = RealsRead[41] //new, March 2011 |
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152 | |
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153 | |
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154 | //waves to contain repeated function calls |
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155 | Make/O/N=(pixelsX) fyy,xx,yy //Assumes square detector !!! |
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156 | ii=0 |
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157 | do |
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158 | xi = ii |
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159 | // fyy[ii] = dc_fy(ii+1,sy,sy3,ycenter) |
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160 | // xx[ii] = dc_fxn(ii+1,sx,sx3,xcenter) |
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161 | // yy[ii] = dc_fym(ii+1,sy,sy3,ycenter) |
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162 | ii+=1 |
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163 | while(ii<pixelsX) |
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164 | |
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165 | Make/O/N=(pixelsX,pixelsY) SolidAngle // testing only |
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166 | |
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167 | ii=0 |
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168 | do |
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169 | xi = ii |
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170 | // xd = dc_fx(ii+1,sx,sx3,xcenter)-xx0 |
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171 | jj=0 |
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172 | do |
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173 | yd = fyy[jj]-yy0 |
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174 | //rad is the distance of pixel ij from the sample |
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175 | //domega is the ratio of the solid angle of pixel ij versus center pixel |
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176 | // product xy = 1 for a detector with a linear spatial response (modern Ordela) |
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177 | // solid angle calculated, dW^3 >=1, so multiply data to raise measured values to correct values. |
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178 | rad = sqrt(dtdis2 + xd^2 + yd^2) |
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179 | domega = rad/dtdist |
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180 | ratio = domega^3 |
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181 | xy = xx[ii]*yy[jj] |
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182 | |
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183 | data[ii][jj] *= xy*ratio |
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184 | |
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185 | solidAngle[ii][jj] = xy*ratio //testing only |
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186 | data_err[ii][jj] *= xy*ratio //error propagation assumes that SA and Jacobian are exact, so simply scale error |
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187 | |
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188 | |
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189 | // correction factor for detector efficiency JBG memo det_eff_cor2.doc 3/20/07 |
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190 | // correction inserted 11/2007 SRK |
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191 | // large angle detector efficiency is >= 1 and will "bump up" the measured value at the highest angles |
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192 | // so divide here to get the correct answer (5/22/08 SRK) |
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193 | if(doEfficiency) |
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194 | data[ii][jj] /= DetEffCorr(lambda,dtdist,xd,yd) |
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195 | data_err[ii][jj] /= DetEffCorr(lambda,dtdist,xd,yd) |
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196 | // solidAngle[ii][jj] /= DetEffCorr(lambda,dtdist,xd,yd) //testing only |
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197 | endif |
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198 | |
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199 | // large angle transmission calculation is <= 1 and will "bump down" the measured value at the highest angles |
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200 | // so divide here to get the correct answer |
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201 | if(doTrans) |
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202 | |
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203 | if(trans<0.1 && ii==0 && jj==0) |
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204 | Print "***transmission is less than 0.1*** and is a significant correction" |
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205 | endif |
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206 | |
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207 | if(trans==0) |
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208 | if(ii==0 && jj==0) |
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209 | Print "***transmission is ZERO*** and has been reset to 1.0 for the averaging calculation" |
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210 | endif |
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211 | trans = 1 |
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212 | endif |
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213 | |
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214 | // pass in the transmission error, and the error in the correction is returned as the last parameter |
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215 | lat_corr = LargeAngleTransmissionCorr(trans,dtdist,xd,yd,trans_err,lat_err) //moved from 1D avg SRK 11/2007 |
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216 | data[ii][jj] /= lat_corr //divide by the correction factor |
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217 | // |
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218 | // |
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219 | // |
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220 | // relative errors add in quadrature |
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221 | tmp_err = (data_err[ii][jj]/lat_corr)^2 + (lat_err/lat_corr)^2*data[ii][jj]*data[ii][jj]/lat_corr^2 |
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222 | tmp_err = sqrt(tmp_err) |
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223 | |
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224 | data_err[ii][jj] = tmp_err |
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225 | |
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226 | // solidAngle[ii][jj] = lat_err |
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227 | |
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228 | |
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229 | //solidAngle[ii][jj] = LargeAngleTransmissionCorr(trans,dtdist,xd,yd) //testing only |
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230 | endif |
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231 | |
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232 | jj+=1 |
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233 | while(jj<pixelsX) |
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234 | ii+=1 |
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235 | while(ii<pixelsX) |
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236 | |
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237 | //clean up waves |
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238 | |
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239 | Return(0) |
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240 | End |
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241 | |
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242 | |
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243 | |
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244 | //distances passed in are in mm |
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245 | // dtdist is SDD |
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246 | // xd and yd are distances from the beam center to the current pixel |
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247 | // |
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248 | // TODO: |
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249 | // -- DoAlert 0,"This has not yet been updated for VSANS" |
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250 | // |
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251 | Function DetEffCorr(lambda,dtdist,xd,yd) |
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252 | Variable lambda,dtdist,xd,yd |
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253 | |
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254 | DoAlert 0,"This has not yet been updated for VSANS" |
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255 | |
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256 | Variable theta,cosT,ff,stAl,stHe |
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257 | |
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258 | theta = atan( (sqrt(xd^2 + yd^2))/dtdist ) |
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259 | cosT = cos(theta) |
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260 | |
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261 | stAl = 0.00967*lambda*0.8 //dimensionless, constants from JGB memo |
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262 | stHe = 0.146*lambda*2.5 |
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263 | |
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264 | ff = exp(-stAl/cosT)*(1-exp(-stHe/cosT)) / ( exp(-stAl)*(1-exp(-stHe)) ) |
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265 | |
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266 | return(ff) |
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267 | End |
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268 | |
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269 | // DIVIDE the intensity by this correction to get the right answer |
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270 | // TODO: |
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271 | // -- DoAlert 0,"This has not yet been updated for VSANS" |
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272 | // |
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273 | // |
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274 | Function LargeAngleTransmissionCorr(trans,dtdist,xd,yd,trans_err,err) |
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275 | Variable trans,dtdist,xd,yd,trans_err,&err |
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276 | |
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277 | DoAlert 0,"This has not yet been updated for VSANS" |
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278 | |
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279 | //angle dependent transmission correction |
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280 | Variable uval,arg,cos_th,correction,theta |
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281 | |
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282 | ////this section is the trans_correct() VAX routine |
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283 | // if(trans<0.1) |
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284 | // Print "***transmission is less than 0.1*** and is a significant correction" |
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285 | // endif |
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286 | // if(trans==0) |
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287 | // Print "***transmission is ZERO*** and has been reset to 1.0 for the averaging calculation" |
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288 | // trans = 1 |
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289 | // endif |
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290 | |
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291 | theta = atan( (sqrt(xd^2 + yd^2))/dtdist ) //theta at the input pixel |
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292 | |
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293 | //optical thickness |
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294 | uval = -ln(trans) //use natural logarithm |
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295 | cos_th = cos(theta) |
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296 | arg = (1-cos_th)/cos_th |
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297 | |
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298 | // a Taylor series around uval*arg=0 only needs about 4 terms for very good accuracy |
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299 | // correction= 1 - 0.5*uval*arg + (uval*arg)^2/6 - (uval*arg)^3/24 + (uval*arg)^4/120 |
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300 | // OR |
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301 | if((uval<0.01) || (cos_th>0.99)) |
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302 | //small arg, approx correction |
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303 | correction= 1-0.5*uval*arg |
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304 | else |
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305 | //large arg, exact correction |
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306 | correction = (1-exp(-uval*arg))/(uval*arg) |
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307 | endif |
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308 | |
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309 | Variable tmp |
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310 | |
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311 | if(trans == 1) |
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312 | err = 0 //no correction, no error |
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313 | else |
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314 | //sigT, calculated from the Taylor expansion |
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315 | tmp = (1/trans)*(arg/2-arg^2/3*uval+arg^3/8*uval^2-arg^4/30*uval^3) |
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316 | tmp *= tmp |
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317 | tmp *= trans_err^2 |
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318 | tmp = sqrt(tmp) //sigT |
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319 | |
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320 | err = tmp |
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321 | endif |
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322 | |
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323 | // Printf "trans error = %g\r",trans_err |
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324 | // Printf "correction = %g +/- %g\r", correction, err |
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325 | |
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326 | //end of transmission/pathlength correction |
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327 | |
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328 | return(correction) |
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329 | end |
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330 | |
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331 | |
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332 | // |
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333 | // TODO: |
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334 | // -- DoAlert 0,"This has not yet been updated for VSANS" |
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335 | // |
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336 | //test procedure, not called anymore |
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337 | Proc AbsoluteScaling(type,c0,c1,c2,c3,c4,c5) |
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338 | String type |
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339 | Variable c0=1,c1=0.1,c2=0.95,c3=0.1,c4=1,c5=32.0 |
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340 | Prompt type,"WORK data type",popup,"CAL;COR;SAM" |
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341 | Prompt c0, "Sample Transmission" |
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342 | Prompt c1, "Sample Thickness (cm)" |
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343 | Prompt c2, "Standard Transmission" |
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344 | Prompt c3, "Standard Thickness (cm)" |
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345 | Prompt c4, "I(0) from standard fit (normalized to 1E8 monitor cts)" |
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346 | Prompt c5, "Standard Cross-Section (cm-1)" |
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347 | |
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348 | Variable err |
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349 | //call the function to do the math |
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350 | //data from "type" will be scaled and deposited in ABS |
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351 | err = Absolute_Scale(type,c0,c1,c2,c3,c4,c5) |
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352 | |
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353 | if(err) |
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354 | Abort "Error in Absolute_Scale()" |
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355 | endif |
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356 | |
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357 | //contents are always dumped to ABS |
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358 | type = "ABS" |
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359 | |
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360 | String newTitle = "WORK_"+type |
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361 | DoWindow/F SANS_Data |
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362 | DoWindow/T SANS_Data, newTitle |
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363 | KillStrings/Z newTitle |
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364 | |
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365 | //need to update the display with "data" from the correct dataFolder |
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366 | //reset the current displaytype to "type" |
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367 | String/G root:myGlobals:gDataDisplayType=Type |
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368 | |
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369 | fRawWindowHook() |
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370 | |
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371 | End |
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372 | |
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373 | // |
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374 | // TODO: |
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375 | // -- DoAlert 0,"This has not yet been updated for VSANS" |
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376 | // |
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377 | //s_ is the standard |
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378 | //w_ is the "work" file |
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379 | //both are work files and should already be normalized to 10^8 monitor counts |
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380 | Function Absolute_Scale(type,w_trans,w_thick,s_trans,s_thick,s_izero,s_cross,kappa_err) |
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381 | String type |
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382 | Variable w_trans,w_thick,s_trans,s_thick,s_izero,s_cross,kappa_err |
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383 | |
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384 | DoAlert 0,"This has not yet been updated for VSANS" |
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385 | |
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386 | //convert the "type" data to absolute scale using the given standard information |
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387 | //copying the "type" waves to ABS |
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388 | |
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389 | //check for existence of data, rescale to linear if needed |
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390 | String destPath |
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391 | //check for "type" |
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392 | if(WaveExists($("root:Packages:NIST:"+Type + ":data")) == 0) |
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393 | Print "There is no work file in "+type+"--Aborting" |
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394 | Return(1) //error condition |
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395 | Endif |
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396 | //check for log-scaling of the "type" data and adjust if necessary |
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397 | destPath = "root:Packages:NIST:"+Type |
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398 | NVAR gIsLogScale = $(destPath + ":gIsLogScale") |
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399 | if(gIsLogScale) |
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400 | Duplicate/O $(destPath + ":linear_data") $(destPath + ":data")//back to linear scale |
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401 | Variable/G $(destPath + ":gIsLogScale")=0 //the "type" data is not logscale anymore |
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402 | endif |
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403 | |
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404 | //copy "oldtype" information to ABS |
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405 | //overwriting out the old contents of the ABS folder (/O option in Duplicate) |
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406 | //copy over the waves data,vlegend,text,integers,reals(read) |
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407 | |
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408 | String oldType= "root:Packages:NIST:"+type //this is where the data to be absoluted is |
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409 | //copy from current dir (type) to ABS, defined by destPath |
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410 | Duplicate/O $(oldType + ":data"),$"root:Packages:NIST:ABS:data" |
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411 | Duplicate/O $(oldType + ":linear_data"),$"root:Packages:NIST:ABS:linear_data" |
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412 | Duplicate/O $(oldType + ":linear_data_error"),$"root:Packages:NIST:ABS:linear_data_error" |
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413 | // Duplicate/O $(oldType + ":vlegend"),$"root:Packages:NIST:ABS:vlegend" |
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414 | Duplicate/O $(oldType + ":textread"),$"root:Packages:NIST:ABS:textread" |
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415 | Duplicate/O $(oldType + ":integersread"),$"root:Packages:NIST:ABS:integersread" |
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416 | Duplicate/O $(oldType + ":realsread"),$"root:Packages:NIST:ABS:realsread" |
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417 | //need to save a copy of filelist string too (from the current type folder) |
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418 | SVAR oldFileList = $(oldType + ":fileList") |
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419 | //need to copy filelist string too |
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420 | String/G $"root:Packages:NIST:ABS:fileList" = oldFileList |
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421 | |
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422 | //now switch to ABS folder |
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423 | //make appropriate wave references |
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424 | WAVE data=$"root:Packages:NIST:ABS:linear_data" // these wave references point to the "type" data in ABS |
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425 | WAVE data_err=$"root:Packages:NIST:ABS:linear_data_error" // these wave references point to the "type" data in ABS |
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426 | WAVE data_copy=$"root:Packages:NIST:ABS:data" // just for display |
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427 | WAVE/T textread=$"root:Packages:NIST:ABS:textread" //that are to be directly operated on |
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428 | WAVE integersread=$"root:Packages:NIST:ABS:integersread" |
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429 | WAVE realsread=$"root:Packages:NIST:ABS:realsread" |
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430 | Variable/G $"root:Packages:NIST:ABS:gIsLogscale"=0 //make new flag in ABS folder, data is linear scale |
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431 | |
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432 | //do the actual absolute scaling here, modifying the data in ABS |
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433 | Variable defmon = 1e8,w_moncount,s1,s2,s3,s4 |
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434 | |
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435 | w_moncount = realsread[0] //monitor count in "type" |
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436 | if(w_moncount == 0) |
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437 | //zero monitor counts will give divide by zero --- |
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438 | DoAlert 0,"Total monitor count in data file is zero. No rescaling of data" |
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439 | Return(1) //report error |
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440 | Endif |
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441 | |
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442 | //calculate scale factor |
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443 | Variable scale,trans_err |
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444 | s1 = defmon/realsread[0] //[0] is monitor count (s1 should be 1) |
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445 | s2 = s_thick/w_thick |
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446 | s3 = s_trans/w_trans |
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447 | s4 = s_cross/s_izero |
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448 | |
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449 | // kappa comes in as s_izero, so be sure to use 1/kappa_err |
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450 | |
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451 | data *= s1*s2*s3*s4 |
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452 | |
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453 | scale = s1*s2*s3*s4 |
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454 | trans_err = realsRead[41] |
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455 | |
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456 | // print scale |
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457 | // print data[0][0] |
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458 | |
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459 | data_err = sqrt(scale^2*data_err^2 + scale^2*data^2*(kappa_err^2/s_izero^2 +trans_err^2/w_trans^2)) |
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460 | |
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461 | // print data_err[0][0] |
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462 | |
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463 | // keep "data" in sync with linear_data |
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464 | data_copy = data |
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465 | |
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466 | //********* 15APR02 |
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467 | // DO NOt correct for atenuators here - the COR step already does this, putting all of the data one equal |
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468 | // footing (zero atten) before doing the subtraction. |
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469 | // |
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470 | //Print "ABS data multiplied by ",s1*s2*s3*s4/attenFactor |
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471 | |
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472 | //update the ABS header information |
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473 | textread[1] = date() + " " + time() //date + time stamp |
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474 | |
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475 | Return (0) //no error |
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476 | End |
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477 | |
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478 | |
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479 | // |
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480 | // TODO: |
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481 | // -- DoAlert 0,"This has not yet been updated for VSANS" |
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482 | // |
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483 | // |
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484 | // match the attenuation of the RAW data to the "type" data |
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485 | // so that they can be properly added |
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486 | // |
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487 | // are the attenuator numbers the same? if so exit |
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488 | // |
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489 | // if not, find the attenuator number for type |
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490 | // - find both attenuation factors |
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491 | // |
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492 | // rescale the raw data to match the ratio of the two attenuation factors |
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493 | // -- adjust the detector count (rw) |
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494 | // -- the linear data |
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495 | // |
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496 | // |
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497 | Function Adjust_RAW_Attenuation(type) |
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498 | String type |
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499 | |
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500 | DoAlert 0,"This has not yet been updated for VSANS" |
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501 | |
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502 | WAVE rw=$("root:Packages:NIST:RAW:realsread") |
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503 | WAVE linear_data=$("root:Packages:NIST:RAW:linear_data") |
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504 | WAVE data=$("root:Packages:NIST:RAW:data") |
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505 | WAVE data_err=$("root:Packages:NIST:RAW:linear_data_error") |
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506 | WAVE/T tw = $("root:Packages:NIST:RAW:textRead") |
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507 | |
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508 | WAVE dest_reals=$("root:Packages:NIST:"+type+":realsread") |
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509 | |
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510 | Variable dest_atten,raw_atten,tol |
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511 | Variable lambda,raw_atten_err,raw_AttenFactor,dest_attenFactor,dest_atten_err |
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512 | String fileStr |
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513 | |
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514 | dest_atten = dest_reals[3] |
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515 | raw_atten = rw[3] |
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516 | |
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517 | tol = 0.1 // within 0.1 atten units is OK |
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518 | if(abs(dest_atten - raw_atten) < tol ) |
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519 | return(0) |
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520 | endif |
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521 | |
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522 | fileStr = tw[3] |
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523 | lambda = rw[26] |
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524 | // TODO access correct values |
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525 | raw_AttenFactor = 1//AttenuationFactor(fileStr,lambda,raw_atten,raw_atten_err) |
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526 | dest_AttenFactor = 1//AttenuationFactor(fileStr,lambda,dest_atten,dest_atten_err) |
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527 | |
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528 | rw[2] *= dest_AttenFactor/raw_AttenFactor |
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529 | linear_data *= dest_AttenFactor/raw_AttenFactor |
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530 | |
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531 | // to keep "data" and linear_data in sync |
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532 | data = linear_data |
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533 | |
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534 | return(0) |
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535 | End |
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536 | |
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537 | // |
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538 | // TODO: |
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539 | // -- DoAlert 0,"This has not yet been updated for VSANS" |
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540 | // |
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541 | //************************ |
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542 | //unused testing procedure, may not be up-to-date with other procedures |
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543 | //check before re-implementing |
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544 | // |
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545 | Proc DIV_a_Workfile(type) |
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546 | String type |
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547 | Prompt type,"WORK data type",popup,"COR;SAM;EMP;BGD" |
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548 | |
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549 | //macro will take whatever is in SELECTED folder and DIVide it by the current |
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550 | //contents of the DIV folder - the function will check for existence |
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551 | //before proceeding |
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552 | |
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553 | Variable err |
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554 | err = Divide_work(type) //returns err = 1 if data doesn't exist in specified folders |
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555 | |
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556 | if(err) |
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557 | Abort "error in Divide_work" |
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558 | endif |
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559 | |
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560 | //contents are always dumped to CAL |
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561 | type = "CAL" |
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562 | |
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563 | String newTitle = "WORK_"+type |
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564 | DoWindow/F SANS_Data |
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565 | DoWindow/T SANS_Data, newTitle |
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566 | KillStrings/Z newTitle |
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567 | |
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568 | //need to update the display with "data" from the correct dataFolder |
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569 | //reset the current displaytype to "type" |
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570 | String/G root:myGlobals:gDataDisplayType=Type |
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571 | |
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572 | fRawWindowHook() |
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573 | |
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574 | End |
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575 | |
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576 | // |
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577 | // TODO: |
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578 | // -- DoAlert 0,"This has not yet been updated for VSANS" |
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579 | // |
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580 | //function will divide the contents of "type" folder with the contents of |
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581 | //the DIV folder |
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582 | // all data is converted to linear scale for the calculation |
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583 | // |
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584 | Function Divide_work(type) |
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585 | String type |
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586 | |
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587 | DoAlert 0,"This has not yet been updated for VSANS" |
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588 | |
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589 | //check for existence of data in type and DIV |
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590 | // if the desired workfile doesn't exist, let the user know, and abort |
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591 | String destPath="" |
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592 | |
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593 | if(WaveExists($("root:Packages:NIST:"+Type + ":data")) == 0) |
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594 | Print "There is no work file in "+type+"--Aborting" |
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595 | Return(1) //error condition |
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596 | Endif |
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597 | //check for DIV |
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598 | // if the DIV workfile doesn't exist, let the user know,and abort |
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599 | |
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600 | if(WaveExists($"root:Packages:NIST:DIV:data") == 0) |
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601 | Print "There is no work file in DIV --Aborting" |
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602 | Return(1) //error condition |
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603 | Endif |
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604 | //files exist, proceed |
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605 | |
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606 | //check for log-scaling of the "DIV" data and adjust if necessary |
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607 | // should not be needed now - using display flag instead |
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608 | // ConvertFolderToLinearScale("DIV") |
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609 | |
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610 | //copy type information to CAL, wiping out the old contents of the CAL folder first |
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611 | |
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612 | //destPath = "root:Packages:NIST:CAL" |
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613 | //SetDataFolder destPath |
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614 | //KillWaves/A/Z //get rid of the old data in CAL folder |
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615 | |
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616 | //check for log-scaling of the "type" data and adjust if necessary |
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617 | // should not be needed now - using display flag instead |
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618 | // ConvertFolderToLinearScale(type) |
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619 | //then continue |
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620 | |
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621 | //copy from current dir (type)=destPath to CAL, overwriting CAL contents |
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622 | destPath = "root:Packages:NIST:" + type |
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623 | Duplicate/O $(destPath + ":data"),$"root:Packages:NIST:CAL:data" |
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624 | Duplicate/O $(destPath + ":linear_data"),$"root:Packages:NIST:CAL:linear_data" |
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625 | Duplicate/O $(destPath + ":linear_data_error"),$"root:Packages:NIST:CAL:linear_data_error" |
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626 | // Duplicate/O $(destPath + ":vlegend"),$"root:Packages:NIST:CAL:vlegend" |
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627 | Duplicate/O $(destPath + ":textread"),$"root:Packages:NIST:CAL:textread" |
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628 | Duplicate/O $(destPath + ":integersread"),$"root:Packages:NIST:CAL:integersread" |
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629 | Duplicate/O $(destPath + ":realsread"),$"root:Packages:NIST:CAL:realsread" |
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630 | //need to save a copy of filelist string too (from the current type folder) |
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631 | SVAR oldFileList = $(destPath + ":fileList") |
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632 | |
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633 | //now switch to reference waves in CAL folder |
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634 | destPath = "root:Packages:NIST:CAL" |
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635 | //make appropriate wave references |
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636 | Wave data=$(destPath + ":linear_data") // these wave references point to the data in CAL |
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637 | // Wave data_err=$(destPath + ":linear_data_err") // these wave references point to the data in CAL |
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638 | Wave data_copy=$(destPath + ":data") // these wave references point to the data in CAL |
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639 | Wave/t textread=$(destPath + ":textread") //that are to be directly operated on |
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640 | Wave integersread=$(destPath + ":integersread") |
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641 | Wave realsread=$(destPath + ":realsread") |
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642 | Variable/G $(destPath + ":gIsLogScale")=0 //make new flag in CAL folder, data is linear scale |
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643 | //need to copy filelist string too |
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644 | String/G $(destPath + ":fileList") = oldFileList |
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645 | |
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646 | Wave div_data = $"root:Packages:NIST:DIV:data" //hard-wired in.... |
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647 | //do the division, changing data in CAL |
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648 | data /= div_data |
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649 | |
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650 | // data_err /= div_data |
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651 | |
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652 | // keep "data" in sync with linear_data |
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653 | data_copy = data |
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654 | |
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655 | //update CAL header |
---|
656 | textread[1] = date() + " " + time() //date + time stamp |
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657 | |
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658 | Return(0) |
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659 | End |
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660 | |
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661 | |
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662 | ////////////////////////// |
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