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How to do surface fit? [message #10790]

Tue, 27 January 1998 00:00

Gang Chen
Messages: 4
Registered: January 1998

Junior Member

Hi,

I am trying to fit a surface (probably 2nd degree polynomial:
z=a+b*x+c*y+d*x*x+e*xy+f*y*y) on a two dimensional grids with IDL. But it
seems to me that SFIT and SVDFIT would not serve my purpose: SFIT only
generates the values on those grids without giving the coefficients, and
it uses different format of polynomial (z=sum of k_i,j * x^i * y^j); While
SVDFIT works only for curve fit. Does anybody have any idea on how to do
this by simply calling some existing functions instead of writing more
complicate code?

Many thanks,
Gang Chen == gang@cochise.biosci.arizona.edu

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[Message index]

		How to do surface fit? By: Gang Chen on Tue, 27 January 1998 00:00
		Re: How to do surface fit? By: Evilio del Rio on Thu, 29 January 1998 00:00

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