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Hi Adriana, If by methodology, do you mean if averages are taken and how overlapping is performed for radar sites? I will have to check on that next week as I am away on vacation this week, but I don't think there is anything in the documentation about this, instead I will have to look in the source code. decode_radar.c is the relevant file, I believe, located in $GEMPAK/source/programs/upc/programs/nex2gini/ -Michael James Unidata > Full Name: Adriana Beltran-Przekurat > Email Address: address@hidden > Organization: John Deere > Package Version: latest > Operating System: Linux > Hardware: > Description of problem: > > Hi there, > > I would like to know what's the methodology used in the gempak radar > programs to build a composite. I can't find any detail information online > or in the manuals. > > Thanks, > Adriana > > Ticket Details =================== Ticket ID: UVS-411645 Department: Support GEMPAK Priority: Normal Status: Open