comp.lang.idl-pvwave archive: archive » python, strange result

Home » Public Forums » archive » python, strange result

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: python, strange result [message #91750 is a reply to message #91721]

Thu, 20 August 2015 10:51

chris_torrence@NOSPAM is currently offline

chris_torrence@NOSPAM
Messages: 528
Registered: March 2007

Senior Member

On Friday, August 14, 2015 at 9:22:50 AM UTC-6, Dae-Kyu Shin wrote:
> Here is example code
>
> pro test4
>
> compile_opt idl2
>
> x = indgen(4)
> y = indgen(3)
> z = indgen(4, 3)
>
>
>
> python.run, 'from scipy import interpolate'
> f = python.interpolate.interp2d(x, y, z)
> print, f(x, y)
>
>
> end
>
>
>
> The output of "f" is
> 0.00000000 4.0000000 8.0000000 1.0000000
> 5.0000000 9.0000000 2.0000000 6.0000000
> 10.000000 3.0000000 7.0000000 11.000000
>
> What happend?
> Exact answer is "z".

You might need to take the transpose(z) before you pass it into interp2d. IDL is column major while Python is row major.

Cheers,
Chris

Report message to a moderator

[Message index]

		python, strange result By: Dae-Kyu Shin on Fri, 14 August 2015 08:22
		Re: python, strange result By: chris_torrence@NOSPAM on Thu, 20 August 2015 10:51

Previous Topic:	Apply a shapefile to raster images in IDL
Next Topic:	plot function performance

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Oct 08 15:11:45 PDT 2025

Total time taken to generate the page: 0.00446 seconds