[Rnomads-user] Trouble viewing GRIB

Daniel Bowman danny.c.bowman at gmail.com
Mon Nov 13 05:26:20 CET 2017

Hi Stephen,

I'm sorry you're having issues.  Can you send me the file you're
trying to read, and a copy of the script you're trying to use? It's
hard to say what the problem is without the exact inputs.



On Wed, Nov 8, 2017 at 6:14 PM, Stephen Walsh <walsh124 at vt.edu> wrote:
> Hello,
> My name is Steve Walsh and I am a first year statistics graduate student at
> Virginia Tech. I have very little programming experience, so this is my
> first time trying to use GRIB data. I downloaded data from UCAR at the
> following site: https://data.eol.ucar.edu/cgi-bin/codiac/fgr_form/id=21.093
> (example file name after unzipping: ST4.2004081212.06h)
> From looking at the example provided in the help file, it seems that you
> need to use a URL to look at the data. However, since I am getting the data
> via FTP, I tried to use the link that contained the different GRIB files,
> but I think this is causing trouble because (1) the files are compressed .Z
> files and (2) the link isn't directly to a single file, it is a link that
> has the downloads for each of the files altogether. Is there a way to load
> files on your local hard drive, rather than using a URL?
> I also understand that I should install rNOMADS with GRIB file support based
> on this article:
> https://www.r-bloggers.com/how-to-install-rnomads-with-grib-file-support-on-windows/
> I followed the instructions but when I get to the very last step and run
> system("wgrib2"), I receive the following: Warning message:
> running command 'wgrib2' had status 127
> I would greatly appreciate any help or words of wisdom you can offer with
> this. Thanks for everything you do to make R a more accessible resource!
> Take care,
> Steve Walsh

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