On Fri, Apr 25, 2008 at 1:25 PM, Rich Shepard <[EMAIL PROTECTED]> wrote:
> On Fri, 25 Apr 2008, Charles R Harris wrote: > > > You can use something like f(x) = (1-x**2)**2 , which has inflection > > points and vanishes at +/- 1. Any of the B-splines will also do the > trick. > > Chuck, > > Thank you. I need to make some time to understand the B-splines to use > them appropriately. Unfortunately, my mathematical statistics learning was > many years in the past ... but we had moved ahead of writing on clay > tablets > by that time. Not needing to retain that knowledge for many years means it > was replaced by more pressing current knowledge. The B-splines do look > promising, though. > Here's a B-spline approximation to a Gaussian: http://www.doc.ic.ac.uk/~dfg/AndysSplineTutorial/BSplines.html Chuck
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