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Re: Interpolation from a regular to an irregular grid? [message #35064 is a reply to message #35063]

Wed, 07 May 2003 07:05

btt
Messages: 345
Registered: December 2000

Senior Member

Evan Mason wrote:
> Hi, I am kind of new to IDL, and have just started a new job in
> physical oceanography in Portugal. At present I am familiarising
> myself with IDL, which I will be using extensively.
>
> One of my first tasks is to find a way to input satellite collected
> wind data into an ocean model that is being run here. The wind data
> are regularly spaced, whereas the model requires the data in a series
> of irregularly spaced intervals.
>
> Looking through the messages on this group I see many questions and
> answers about working from irregular to regular grids using
> Triangulate and Trigrid, but I wonder if anyone knows how to do the
> reverse?
>

Hello,

The XOUT and YOUT keywords to TRIGRID and GRIDDATA (IDL version 5.5 and
higher) gives you control of irregular gridding.

This is from the online help for IDL 5.6

XOUT
Set this keyword to a vector specifying the output grid X values. If
this keyword is supplied, the GS and Limits arguments are ignored. Use
this keyword to specify irregularly spaced rectangular output grids. If
XOUT is specified, YOUT must also be specified. If keyword NX is also
supplied then only the first NX points of XOUT will be used.

Ben

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[Message index]

		Re: Interpolation from a regular to an irregular grid? By: JD Smith on Wed, 07 May 2003 09:13
		Re: Interpolation from a regular to an irregular grid? By: mvukovic on Wed, 07 May 2003 08:51
		Re: Interpolation from a regular to an irregular grid? By: btt on Wed, 07 May 2003 07:05

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