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Re: Using GDS for making grib data to a web accessible dods data

Dear Murat Gunduz,

The first thing you must do first is create a GrADS descriptor file and a grib map in order to get the grib data into GrADS. Take a look at the GrADS documentation (http://www.iges.org/grads/gadoc/grib2.html). You can also try Wesley Ebisuzaki's routine grib2ctl (http://wesley.wwb.noaa.gov). If you're having trouble with this step, then write to the gradsusr list with complete information about your grib file, the output from gribscan or wgrib, and a copy of your descriptor file.

Once you have a GrADS descriptor file that works (let's call it "demo.ctl"), then you can add this line to your GDS configuration file:
<dataset name="demo" file="<fullpathname>/demo.ctl" format="ctl"/>
Of course, be sure to put the real path to your demo.ctl instead of <fullpathname>.

Then, start the GDS (execute the command $YOURGDSHOME/startserver). Check the GDS log files to make sure everything loaded and started properly. If everything works, your data set in Ferret should open like this:

yes? use "http://pc-nino:9090/dods/demo"

If you want to see the GDS table of contents or get the .das, .dds, or .info for your dataset, simply type "http://pc-nino:9090/dods" into your browser.

Good luck!
Jennifer Miletta Adams
4041 Powder Mill Road, Suite 302
Calverton, MD 20705

On Friday, May 9, 2003, at 02:33 PM, Murat Gunduz wrote:
I am trying to use the "GDS" server, which will make
my GRIB file into a Web accessible DODS data set that
"Ferret" can read.

I am using GrADS 1.8SL7 on RedHat Linux 9.0. My java
version is "1.3.1". I obtained the gds tar file and
untar it. Also, I managed to make my machine a web
server. I test it by writing "http://pc-nino" in
netscape and it gives a test page.

To make my data a web accessible dods data,
I have create the below configuration file;

<?xml version="1.0" encoding="ISO-8859-1"?>
<catalog temp_size_limit="1000">
<dataset name = "test"
file = "testdata/little_endian.ctl"
das = "testdata/extra.das"
url = "http://pc-nino/"
format = "ctl"/>
<invoker grads_dir="/usr/local/grads"/>

What I expecting is that when I write
http://pc-nino/dods in my web browser, a page
showing the info,dds and das links for my testdata
should appear. However it is not the case.

Could you please help me?, How can I make my grib data a
web accessible dods data?

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