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Re: on reading NCDF files [message #37765 is a reply to message #37673]

Tue, 20 January 2004 08:12

Liam Gumley
Messages: 473
Registered: November 1994

Senior Member

"Sangwoo" <leesw@astro.snu.ac.kr> wrote in message
news:3ee6ff80.0401192300.534dc5b1@posting.google.com...
> Hi everyone!
>
> I'm gonna read a NCDF file. It may contain several variables within
> itself. When I extract a variable named "image", the procedure is as
> follows:
>
> cid=ncdf_open('test.nc')
> vid=ncdf_varid(cid,'image')
> ncdf_varget,cid,vid,image
>
> But suppose I don't know the name of each variable unfortunately. Is
> there any way to figure out the details of the included
> variables(name, dimension, etc.)? The second command fails when I put
> a wrong variable. And is there any way to read the included variables
> all at once? (something like /all keyword)
>
> I wonder if there's any way to figure out all details of the included
> variables from an NCDF file directly.

You may wish to try the following sample programs from my book:

NCDF_VARDIR: returns a list of variable names in a netCDF file
NCDF_ATTDIR: returns a list of attribute names associated with a given
variable

The programs are available at

http://www.gumley.com/PIP/About_Book.html

in the "Sample Programs" archive files. Reading and writing netCDF files in
IDL is explained in detail in Chapter 4.

Cheers,
Liam.
Practical IDL Programming
http://www.gumley.com/

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[Message index]

		on reading NCDF files By: leesw on Tue, 20 January 2004 00:01
		Re: on reading NCDF files By: Don Woodraska on Tue, 20 January 2004 15:50
		Re: on reading NCDF files By: Paul Van Delst[1] on Tue, 20 January 2004 10:07
		Re: on reading NCDF files By: K. Bowman on Tue, 20 January 2004 09:38
		Re: on reading NCDF files By: Liam Gumley on Tue, 20 January 2004 08:12

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