Re: Shapefile Example Not Working

Hi Brad,

I have to echo Mary's comments here: shapefile support is optional in
NCL, and it looks as though you have an installation without it. Was
NCL installed from precompiled binaries, or built from source? If
it was built from source, to enable shapefile support requires having
the GDAL libraries present (www.gdal.org).

If it was installed from binaries, let me know and we'll try and
figure out what's going on.

Rick

Begin forwarded message:

> From: Mary Haley <haley@ucar.edu>
> Date: April 20, 2010 8:18:24 AM MDT
> To: "Illston, Bradley G." <illston@ou.edu>
> Cc: ncl-talk forum <ncl-talk@ucar.edu>
> Subject: Re: Shapefile Example Not Working
>
> My apologies, I didn't read the error closely enough! I think you
> may have
> a version of NCL that was built without shapefile support. I'm not
> sure I understand
> this, though, because I thought all the 5.1.1. precompiled Linux
> binaries had
> shapefile support built in.
>
> Do you know if you are running a version of NCL that was compiled
> from source
> code? If so, it's possible that shapefile support was turned off.
>
> I'll keep quiet now, because I just read an email that says Rick will
> try to
> help you. :-)
>
> --Mary
>
> On Apr 20, 2010, at 7:36 AM, Mary Haley wrote:
>
>> Hi Brad,
>>
>> When you downloaded the "st_str.tar.gz" file, did you gunzip and
>> untar the file first:
>>
>> gunzip sa_str.tar.gz
>> tar -xf sa_str.tar
>>
>> Once you do this, you will see the following files:
>>
>> sa.readme sa_str.prj sa_str.shp.xml
>> sa_str.dbf sa_str.shp sa_str.shx
>>
>> and you should now be able to run that example.
>>
>> --Mary
>>
>>
>> On Apr 19, 2010, at 5:15 PM, Illston, Bradley G. wrote:
>>
>>> Greetings,
>>>
>>> I have been trying to get shapefiles to load into NCL and have been
>>> unsuccessful. I decided to just try and duplicate on of the
>>> examples you have on the website.
>>>
>>> http://www.ncl.ucar.edu/Applications/Scripts/shapefiles_3.ncl
>>>
>>> I am using that script unaltered and I have downloaded/gunzip/
>>> untarred the shapefile data from the given website. When I run the
>>> script, I get the following output:
>>>
>>> Copyright (C) 1995-2009 - All Rights Reserved
>>> University Corporation for Atmospheric Research
>>> NCAR Command Language Version 5.1.1
>>> The use of this software is governed by a License Agreement.
>>> See http://www.ncl.ucar.edu/ for more details.
>>> fatal:An internal error has occurred. The file format requested
>>> does not appear to be supported, could not open (sa_str.shp)
>>> fatal:Either file (f) isn't defined or variable (segments) is not a
>>> variable in the file
>>> fatal:Execute: Error occurred at or near line 37 in file
>>> ncl_Shapefile.ncl
>>>
>>> As you can see, I am running NCL v5.1.1, which chould support
>>> shapefiles. I am running the following system:
>>>
>>> "Linux {server name} 2.6.9-34.ELsmp #1 SMP Fri Feb 24 16:56:28 EST
>>> 2006 x86_64 x86_64 x86_64 GNU/Linux"
>>>
>>> Can you provide any guidance on how to open a basic shapefile and
>>> overlay that onto my plotted data?
>>>
>>> Thanks,
>>> Brad Illston
>>> _______________________________________________
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>>
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Received on Tue Apr 20 09:13:24 2010