Re: Help fitting Exponential curves
- To: mathgroup at smc.vnet.net
- Subject: [mg28984] Re: [mg28969] Help fitting Exponential curves
- From: BobHanlon at aol.com
- Date: Thu, 24 May 2001 04:07:00 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Use the standard add-on package Statistics`NonlinearFit` Bob Hanlon In a message dated 2001/5/23 3:08:09 AM, tcs3a at virginia.edu writes: >I am looking to fit some exponential curves to a form of > P=Po*e^(-K*t) where K and Po are values I need. The P and t I have. > I'm working with mathematica 4.1 and I can read the data and plot it fine > >but it doesn't want to give me reasonable fits. > So I guess my question is how would you go about getting the Fitting to > >work on fitting a Pre-Exponential and an exponential variable. If I type > > PeakFit[x_] = Fit[Peak, Exp[-x], x] > >it only gives me a Pre-exponential, however if I type. > > PeakFit[x_] = Fit[Log[Peak], {-x,Log[x]}, x] > >It just doesn't like that. Could Someone Please point me in the right > >direction. >