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Re: Is it possible to speed up the Interpolate command? [message #89244 is a reply to message #89242]

Thu, 07 August 2014 19:52

wlandsman
Messages: 743
Registered: June 2000

Senior Member

On Thursday, August 7, 2014 6:11:29 PM UTC-4, Stephen Messenger wrote:
> I've been stuck on figuring out how to speed up an interpolation calculation and wondered if anyone has any suggestions?

> for i=0, numlines-1 do begin
> Values(*,i)=interpolate(datacube(*,*,i),x_loc,y_loc)
> endfor

One suggestion is to replace the above with

for i=0,numlines-1 do begin
values[0,i] = interpolate(data cube[*,*,i],x_loc,y_loc)
endfor

https://www.idlcoyote.com/code_tips/asterisk.html

You might also find a slight speed improvement with by writing

for i=0,numlines-1 do $
values[0,i] = interpolate(data cube[*,*,i],x_loc,y_loc)

though the improvement will be less than it was in old versions of IDL.

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[Message index]

		Re: Is it possible to speed up the Interpolate command? By: Michael Galloy on Thu, 07 August 2014 17:42
		Re: Is it possible to speed up the Interpolate command? By: Craig Markwardt on Thu, 07 August 2014 19:44
		Re: Is it possible to speed up the Interpolate command? By: wlandsman on Thu, 07 August 2014 19:52
		Re: Is it possible to speed up the Interpolate command? By: Stephen Messenger on Fri, 08 August 2014 16:19
		Re: Is it possible to speed up the Interpolate command? By: Stephen Messenger on Thu, 14 August 2014 17:04
		Re: Is it possible to speed up the Interpolate command? By: Stephen Messenger on Fri, 08 August 2014 16:18

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