| experience with idl_grib package? [message #60275] |
Thu, 08 May 2008 11:45  |
sarale
Messages: 2
Registered: May 2008
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Junior Member |
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Dear group users,
I am rather new to IDL and completely new to the GRIB data format. I
have tried to figure out how to read GRIB data into IDL and have found
several packages on the web, seemingly all based on the rather old
wgrib c programme. The latest package I found at ITTs webpage by Andy
Pursch (http://www.ittvis.com/codebank/search.asp?FID=488), and it was
easy to install and seems to be running fine. My problem, however, is
that the documentation is quite poor and I cannot understand the
obejct structure created. For example, I cannot see how to identify
which parameter is in each "record", or what time of day it
represents. Also, I work with ECMWF data which apparently use
different parameter codes than the official WMO. Can anybody help with
some good advice on how to advance?
Yours sincerly,
Sara.
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| Re: experience with idl_grib package? [message #60384 is a reply to message #60275] |
Wed, 14 May 2008 05:02  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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sarale writes:
> Maybe I have too high expectations as to what IDL can do?
You probably have spent too much time reading the marketing
materials. :-)
But, subsetting data is, uh, sorta what IDL does best.
I don't think you will have too much trouble once you
get the data out of a file and into a variable.
Cheers,
David
P.S. Let's just say, you probably won't have to write
loops to do this, unless you want your code to run
slowly for some reason. :-)
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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