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T O P I C R E V I E W
billc	Posted - 05/02/2000 : 3:34:00 PM I'm using PFM to fit curves that are convolution of functions. As stated in the manual, convolution can only be defined from built-in functions. Is there any way to overcome this problem to fit convolution of user-defined functions? Note: I tried defining convolution of script functions and dll functions and then fitting it. Origin (v5) crashed in all cases.
1 L A T E S T R E P L I E S (Newest First)
Laurie	Posted - 05/05/2000 : 3:20:00 PM Hi Bill, Yes, the current architecture only permits convolution of built in functions. I have spoken with one of our programmers and he will look into extending this functionality to user-defined functions. For now, you will need to define either a Script or External DLL fitting function that does the convolution itself. We also have an example of a user defined fitting function for the Non-linear Least Squares Fitter (NLSF) in Origin, that convolutes an exponential function with a Gaussian function. I can email you the example Origin OPJ file. Please email me at tech@microcal.com with the Subject Att: Laurie, and I will be happy to send it to you. ----------------- Laurie A. Shea Microcal Technical Support

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