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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Ana, If you have both grids in the same file, you can compute the average using GDDIAG, where "GEM_FILE" is the name of the file containing both grids: GDFILE = GEM_FILE GDOUTF = GEM_FILE GFUNC = avg(P06M^f06,P06M^f18) GDATTIM = 100409/1200 GLEVEL = 0 GVCORD = none GRDNAM = PAVG^f012 GRDTYP = S GPACK = GRDHDR = PROJ = GRDAREA = KXKY = MAXGRD = 200 CPYFIL = GEM_FILE ANLYSS = In this example we're using P06M forecasts for f06 and f18 from 100409/1200, you'll want to adjust these to suit your file/grids date and time. also the GRDNAM = PAVG can be anything you prefer. See http://www.unidata.ucar.edu/cgi-bin/gempak/manual/programs_index?gddiag and http://www.unidata.ucar.edu/cgi-bin/gempak/manual/variables_index?grdnam for more help. Michael James Unidata > Hello Tom, How are you? > > I don't know if you can help me..but... > > I'm trying to do the interpolation the P06M for 2 hours the synop data > for plot with gdcntr. > > I'm using the oagrid for create and oabsfc for input surface file. But i > don't know How i plus P06M for hours (06 and 18) and generate interpolation. > > With gempak is possible plus the values for two hours and after create > the grid file?? > > Thanks > Ana > > > p.s.: sorry if my English is not very good. > > I will send for you the gif with one hour P06M that i create. > > Ticket Details =================== Ticket ID: DHU-135597 Department: Support GEMPAK Priority: Normal Status: Open