home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!portal!lll-winken!uwm.edu!cs.utexas.edu!torn!utzoo!dciem!hugh
- From: hugh@dciem.dciem.dnd.ca (Hugh D. Gamble)
- Newsgroups: sci.math.symbolic
- Subject: Curve fitting with Maple?
- Message-ID: <7007@dciem.dciem.dnd.ca>
- Date: 26 Jan 93 22:13:32 GMT
- Organization: NTT Systems, Inc., Toronto, Canada
- Lines: 29
-
- I know there are lots of s/w packages specifically for curve fitting,
- and I could whip up a least squares fit algorithm in C and use it, but
- what I want to do should be easy to do from Maple, I think, if I knew
- how.
-
- I want to fit a set of x,y datapoints to a 2nd order polynomial.
- There's the interp function that will fit n datapoints to an n-1th
- degree polynomial, but I can't see how to tell it to fit to a 2nd
- order equation except by just giving 3 datapoints. :-(
-
- If I could extract the code from the interp routine, it would probably
- be easy to change it to accept the degree as a parameter.
-
- I looked at regress from the stats package, but it didn't seem very
- useful for this. Maybe it is, but I don't understand the input data
- formats?
-
- Is interp actually useful for curve fitting, or is it just a freebie
- that's there because it was needed internally when drawing pretty
- pictures?
-
- Comments? Thanks.
-
-
-
- --
- # Hugh D. Gamble, NTT Systems Inc. (at DCIEM (416) 635-2156) Std. Disclaimers #
- # hugh@dciem.dciem.dnd.ca, hugh@kink.PhaedraV.On.Ca #
- # "automata da vida, honey" - CA Butterfly #
-