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after talking to a co-worker, he suggested that Grads might be able to read your grib file. http://grads.iges.org/grads/grads.html Robb... On Wed, 19 May 2004, Thomas Reichler wrote:
Hi Robb, Thanks for your reply. I think many people must have run into this problem, since the era-40 data I am talking about are widely used, and they are distributed by DSS from NCAR. So, there might be a chance that somebody else found already a solution... Thomas Robb Kambic wrote: > On Tue, 18 May 2004, Thomas Reichler wrote: > > >>Hi Robb, >> >>I asked Lori Thompson from here at GFDL the question below, and she >>thought you might be able to help me with this. >> >>The problem is that I have ECMWF data (era-40) which is want to >>transform to nc-data. Is there any quick fix for this problem, or is it >>possible to simply rename the variable names in the grib file? >> >>Thanks >>Thomas >> >> >>-------- Original Message -------- >>Subject: grib to netcdf >>Date: Sun, 16 May 2004 16:51:54 -0400 >>From: Thomas Reichler <reichler@xxxxxxxxxxxxx> >>To: Lori Thompson <Lori.Thompson@xxxxxxxx> >>CC: Thomas Reichler <reichler@xxxxxxxxxxxxx> >>References: <Pine.LNX.4.44.0402171358240.15096-100000@lat> >> >>Lori, >> >>I am having problems to convert grib to netcdf using the usual >>gribtocdl/gribtonc technique. The reason is that my grib file contains >>variable names which begin with a number (eg. 10U), which is being > > > Thomas, > > That's a tough one. The specification of netCDF says variable names cannot > start with a digit but it can have [a-zA-Z0-9_] characters. The best > answer would be to go to the data source and ask if they have decoder to > ascii format, etc. Then the variable names would have to be changed. > In the Unidata decoders package there's a program > ascii2nc that probably could be configured to produce a netcdf file. But, > it's going to be a lot of work. Maybe the data provide could change the > names also, it's almost standard that variable names don't start with a > digit. I'll ask around at work if anyone has an idea. > > Robb... > > >>rejected by ncgen as an error. Do you have any idea how I could change >>variable names in a grib file, or is there any other method for the >>conversion? >> >>Thomas >> > >
============================================================================== Robb Kambic Unidata Program Center Software Engineer III Univ. Corp for Atmospheric Research rkambic@xxxxxxxxxxxxxxxx WWW: http://www.unidata.ucar.edu/ ==============================================================================
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