Re: generating xml file for external DODS dsets

[Joe Sirott <sirott@xxxxxxxxxx>]

Hi Cyndy,

There are two reasons that this isn't working:

1) The netCDF library you are using (via the LasNetCDF.pm module) is not DODS enabled. You can either link the NetCDF.pm module from Unidata with a DODS enabled netCDF library (painful), or you might try using addXml.pl from the latest alpha version of LAS (this bypasses the Unidata NetCDF module for DODS datasets). You can pick this up via cvs; instructions for using cvs are available at:

http://ferret.wrc.noaa.gov/Ferret/LAS/Documentation/v5_installation.html

(search the document for "cvs").
2) You are using incorrect syntax for addXml.pl; specifically, you are not specifying an output file. Try something like:

../xml/perl/addXml.pl --out_inc ../xml/perl/template.xml outfile.xml
http://ferret.wrc.noaa.gov/cgi-bin/nph-nc/data/ocean_atlas_monthly.nc
 

Cyndy Chandler wrote:

I'd like to generate xml include files for remotely served DODS
datasets.  Various emails and LAS FAQ entries imply this is possible,
but I believe I've still got some error in the syntax:

The data is available at:
http://www.cgd.ucar.edu/cgi-bin/dods/nph-nc/oce/JGOFS/cdm_0997-0800.nc.html

I'm using LAS v5.0 and documentation suggests:
Usage: addXml.pl [--name dsetname] [--docurl url]
                 [--out_inc] [--in_inc]
                 infile outfile NetCDFfile

further supported by LAS_users activity 26 Oct 2001 where the suggested
syntax was:
../xml/perl/addXml.pl --out_inc ../xml/perl/template.xml
http://ferret.wrc.noaa.gov/cgi-bin/nph-nc/data/ocean_atlas_monthly.nc

So I thought I should be able to generate the xml file thusly:
cd $LAS5_home/lasxml/xml/perl
./addXml.pl --out_inc template.xml cdm_0997-0800.xml
http://www.cgd.ucar.edu/cgi-bin/dods/nph-nc/oce/JGOFS/cdm_0997-0800.nc
Useless use of scalar variable in void context at LASDB.pm line 21.
**File:
http://www.cgd.ucar.edu/cgi-bin/dods/nph-nc/oce/JGOFS/cdm_0997-0800.nc
ncopen: filename
"http://www.cgd.ucar.edu/cgi-bin/dods/nph-nc/oce/JGOFS/cdm_0997-0800.nc":
No such file or directory

So I tried shuffling the elements around a little:
./addXml.pl --in_inc ./template.xml --out_inc cdm_0997-0800.xml
http://www.cgd.ucar.edu/cgi-bin/dods/nph-nc/oce/JGOFS/cdm_0997-0800.nc
Useless use of scalar variable in void context at LASDB.pm line 21.

xml processing instruction not at start of external entity at line 46,
column 0, byte 1345:
</operations>

<?xml version="1.0"?>
^

<lasdata>
 at /usr/local/lib/perl5/site_perl/5.6.1/IP27-irix/XML/Parser.pm line
185

For grins I tried a different dataset:
./addXml.pl --out_inc template.xml DODStest.xml
http://www.cgd.ucar.edu/cgi-bin/dods/nph-nc/oce/OCMIP/Abiotic/equil/NCAR_Abiotic_equil.nc
Useless use of scalar variable in void context at LASDB.pm line 21.
**File:
http://www.cgd.ucar.edu/cgi-bin/dods/nph-nc/oce/OCMIP/Abiotic/equil/NCAR_Abiotic_equil.nc
ncopen: filename
"http://www.cgd.ucar.edu/cgi-bin/dods/nph-nc/oce/OCMIP/Abiotic/equil/NCAR_Abiotic_equil.nc":
No such file or directory

What am I missing?

Thanks,
Cyndy Chandler