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4D Interpolation [message #92652]

Tue, 02 February 2016 06:00

g.nacarts
Messages: 148
Registered: November 2013

Senior Member

Hi

The standard INTERPOLATE function works up to 3 dimensions. I need a 4D interpolation.

I came across with a post referring to interpolate_n.pro by Peter Albert but is no longer available.

Any suggestion?

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Re: 4D Interpolation [message #92653 is a reply to message #92652]

Tue, 02 February 2016 07:46

markb77
Messages: 217
Registered: July 2006

Senior Member

the web archive to the rescue!

http://web.archive.org/web/20051217124215/http://wew.met.fu- berlin.de/idl/interpolate_n.pro

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Re: 4D Interpolation [message #92662 is a reply to message #92653]

Wed, 03 February 2016 03:29

g.nacarts
Messages: 148
Registered: November 2013

Senior Member

Did you use it before? I keep getting the following error: "Array subscript for N_F_I (WHAT_I_NEED_FOR_INTERPOLATION) must have same size as source expression."

I tried the following example

X = FINDGEN(2,50,50,5,125)
X1 = FINDGEN(128)
X2 = FINDGEN(128)
X3 = FINDGEN(20)
X4 = FINDGEN(125)

Xint = FLTARR(2,128,128,20,125)

Xint[0,*,*,*,*] = INTERPOLATE_N(reform(X[0,*,*,*,*]), X1, X2, X3, X4)

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