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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by Stuart_Archer[/i] [br]Hi all, I have a set of kinetic data from transient absorption which consists of a multiple exponential decay convoluted with a Gaussian instrument response function. We don't have a way of specifically measuring the instrument response with the equipment we have. I have tried using the function described here: http://www.originlab.com/doc/Tutorials/Fitting-Convolution to fit my data, however this only seems to be appropriate for a single exponential function? I am not familiar with Origin C, is it simply a case of adding t1, t2, A1, A2 etc as extra variables in with the initial paramaters, or will this require a significant change to the code? Alternatively, are there any built-in functions in Origin now that could deconvolute an instrument response with several exponentials? Any help would be greatly appreciated! Thanks :) [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.