3D Data approximation
- To: mathgroup at smc.vnet.net
- Subject: [mg41486] 3D Data approximation
- From: marwiel at lycos.com (Martin Wieloch)
- Date: Thu, 22 May 2003 06:54:22 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Dear All
Please help me if you can in solving my problem with data
approximation.
It is probably simple but I have had Mathematica just for one week.
I have got a set of experimental results {x,y,z} and I am trying
to approximate (the least square method) them with a function of
the form: a +a1x+a2x2+a3x3+a4x4+b1y+b2y2+b3y3+b4y4+cxy+c1x2y2
Is there is any better function than FIT. I used the fit function
to solve an example, but my results are slightly different from
those I found in a book-I have obtained higher coefficients a, b, c.
I will be very much grateful if someone can help me.
Regards,
Martin