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Re: Interpolate [message #91915 is a reply to message #91914]

Tue, 15 September 2015 07:37

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Klemen writes:

> IDL> x = findgen(42)
> IDL> y = (x-20.)^2 ;just an example
> IDL> plot, x, y
> IDL> yy = interpol(y, 256)
> IDL> plot, indgen(256), yy

Humm. Not sure that is right. Isn't it more like this:

x = findgen(42)
y = (x-20.)^2 ;just an example
!P.Multi=[0,2,1]
cgplot, x, y
xfrac = cgScaleVector(findgen(256), 0, N_Elements(x)-1)
yy = Interpolate(y, xfrac)
cgplot, xfrac, yy, color='red'
!P.Multi=0
END

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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[Message index]

		Interpolate By: Dete van Eeden on Tue, 15 September 2015 02:16
		Re: Interpolate By: Haje Korth on Tue, 15 September 2015 04:20
		Re: Interpolate By: Dete van Eeden on Tue, 15 September 2015 06:31
		Re: Interpolate By: Klemen on Tue, 15 September 2015 07:18
		Re: Interpolate By: David Fanning on Tue, 15 September 2015 07:37
		Re: Interpolate By: Haje Korth on Tue, 15 September 2015 10:32

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