Opened 13 years ago

Closed 13 years ago

#76 closed bug (fixed)

2D functions from DANSE have # of integration points as a fitting parameter

Reported by: srkline Owned by: srkline
Priority: major Milestone: Analysis_4.0_Beta
Component: Analysis Keywords:
Cc: Blocking:
Task: DanseIntegration

Description

This really shouldn't be. "Enough" points should be used to ensure that the model returns the correct answer. A faster, incorrect answer is misleading at best. According to Lionel, his experience shows that 25 pts is fine for the radius polydispersity, but between 80-100 may be more appropriate for the angular integrations, depending on the range (0-pi/2 would require fewer than 0-pi)

Change History (2)

comment:1 Changed 13 years ago by srkline

Currently, the functions are wrapped to hide the # of points used, and is hard-wired at 25. Until real testing is done, the "optimal" number won't be known. It may be necessary to have several versions with different # of points, or set through a (documented) global if the speed penalty is not too great.

comment:2 Changed 13 years ago by srkline

  • Resolution set to fixed
  • Status changed from new to closed

done, as a "hard" wired 25 points in each Igor function. different numbers could be passed to the XOP as needed.

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