On Mon, 28 Apr 2008, Hoyt Koepke wrote: > A Gaussian fit to data x should fit exactly as well as data fit to ax, a > > 0, just with a variance a^2 times the original. The only way this would > not be true is if:
Hoyt, This is what I expected, too. > 1. You are not fitting the variance, but only the mean That's probably it; I'm using the midpoint and the width as a surrogate for FWHM. However, by adjusting the FWHM for the Gaussian curve, and tau for the sigmoid curves when pH is to be plotted, I can achieve the results I need. Just why I don't really understand, but since this is a very small part of a large, complex, approximate reasoning model I'll happily remain ignorant as I move on to testing the rest of the code. Thanks to both you and Alan, Rich -- Richard B. Shepard, Ph.D. | Integrity Credibility Applied Ecosystem Services, Inc. | Innovation <http://www.appl-ecosys.com> Voice: 503-667-4517 Fax: 503-667-8863 _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
