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Michal, If you just want to uncompress the NIDS product and write out the product without the zlib compression, several examples of small converter programs are available: Dan Vietor's ucnids.c program: http://www.unidata.ucar.edu/glimpse/ldm-users-list/4889 Pete Pokrandt's Perl script: http://www.unidata.ucar.edu/glimpse/ldm-users-list/4783 If you are looking for raster values generated from the radials contained within the products, then that is a different question. Steve Chiswell Unidata User Support On Tue, 28 May 2002, Michal Kraszewski wrote: > I would like to use GEMPAK to read in and write out the raw data in uncoded > format for the Level III NIDS radar products. I understand that GEMPAK > provides the possibility for scripting, and I would like to include this > option with writing out raw data to a file. > > I have been sucessful in reading the raw NIDS products in GEMPAK. > > Has anyone been able to write out data from GEMPAK for these products > directly to a file? > > If you have been successful with these Level III products, I would appreciate > any tips or guidance on how it worked out for you. > > Thanks you very much. > > Michal Kraszewski