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Simon, Your input data file does not have valid boundaries, therefore gdvint cannot determine the grid region. This is the information I needed when I previously asked for the gdinfo projection information. GEMPAK-GDINFO>r GRID FILE: outfile GRID NAVIGATION: PROJECTION: MER ANGLES: 0.0 115.0 0.0 GRID SIZE: 100 85 LL CORNER: nan nan UR CORNER: nan nan GRID ANALYSIS BLOCK: ANALYSIS TYPE: BARNES DELTAN: 0.971 DELTAX: -9999.000 DELTAY: -9999.000 GRID AREA: nan nan nan nan EXTEND AREA: nan nan nan nan DATA AREA: nan nan nan nan Number of grids in file: 196 As you see from the information above, whatever program that was used to create the gempak file did not correctly define the LL and UR corner of the grid region. Without this information, the grid spacing can not be determined. When a grid file is creates, the GR_MNAV cann will generate the correct navblk information for the file that is created with the GD_CREF call. If you have the program that processed the MM5 data, you can try to determine why the navblk is not correct. Steve CHiswell Unidata User Support >From: address@hidden (Simon Lownam) >Organization: . >Keywords: 199903022048.NAA23317 >Steve, > The file is there and it's called `outfile'. This is >suppose to be in Gempak format. It was converted from MM5 >output at 12 h of the simulation. > > Thanks for your assistance. > >Simon. >----- >> >> >> Simone, >> Try it again now. >> >> Steve Chiswell >> >> >From: address@hidden (Simon Lownam) >> >Organization: . >> >Keywords: 199903022001.NAA21534 >> >> >Chris, >> > I do not have permission to write to that directory. >> >Here is the error message: >> > >> >lftp> pwd >> >/incoming/chiz >> >lftp> put outfile >> >put: Access failed: 553 outfile: Permission denied. >> > >> > Let me know if there is another alternative. >> > >> >Thanks, >> >Simon. >> >----- >> >> >> >> >> >> Simon, >> >> >> >> you can ftp the file to me at ftp.unidata.ucar.edu, >> >> use the anonymous login and cd /incoming/chiz >> >> put your file in my incoming directory. >> >> >> >> Thanks, >> >> >> >> Steve Chiswell >> >> >> >> >> >> >From: address@hidden (Simon Lownam) >> >> >Organization: . >> >> >Keywords: 199903021740.KAA15909 >> >> >> >> >Steve, >> >> > Thanks for your reply. I am trying to create out2 file (the interpol > ate >> > d >> >> >data). The `outfile' is my input file, which has data on sigma levels. >> >> > >> >> > I just tried it again and I'm including the error messgae below:- >> >> > >> >> > GDFILE Grid file outfile >> >> > GDOUTF Output grid file out2 >> >> > GDATTIM Grid date/time 980608/1200 >> >> > GVCORD Grid vertical coordinate pres >> >> > GLEVEL Grid level 500 >> >> > MAXGRD Maximum number of grids 1000 >> >> > GAREA Graphics area asia >> >> > VCOORD Vertical coordinate type PRES >> >> > Parameters requested: GDFILE,GDOUTF,GDATTIM,GVCORD,GLEVEL,MAXGRD,GAREA, >> >> > VCOORD. >> >> > GEMPAK-GDVINT>GAREA = 15;110;25;120 >> >> > GEMPAK-GDVINT>run >> >> > [GEMPLT -16] NIPBND - Invalid projection bounds. >> >> > [GDVINT -11] Subset region is invalid. >> >> > >> >> > Please let me know how I can get my data to you. >> >> > >> >> >Thanks for your help. >> >> >Simon. >> >> >----- >> >> > >> >> >> >> >> >> >From: address@hidden (Simon Lownam) >> >> >> >Organization: . >> >> >> >Keywords: 199903012046.NAA09509 >> >> >> >> >> >> >Hi, >> >> >> > I'm a new user of Gempak. I'm trying to convert MM5 output to Gempak >> >> >> >format to take advantage of some of the diagnostics in Gempak. I've >> >> >> >got a converted Gempak file and I was trying to do the vertical >> >> >> >interpolation using the command `gdvint', when I got an error message > : >> >> >> > >> >> >> > [GEMPLT -16] NIPBND - Invalid projection bounds >> >> >> > >> >> >> > Here is how I had the various parameters defined: - >> >> >> > >> >> >> > GDFILE Grid file outfile >> >> >> > GDOUTF Output grid file out2 >> >> >> > GDATTIM Grid date/time last >> >> >> > GVCORD Grid vertical coordinate sgma:100/pres >> >> >> > GLEVEL Grid level sfc;1000-900-25;850-100 > -50 >> >> >> > MAXGRD Maximum number of grids 1000 >> >> >> > GAREA Graphics area grid >> >> >> > VCOORD Vertical coordinate type pres;none >> >> >> > Parameters requested: GDFILE,GDOUTF,GDATTIM,GVCORD,GLEVEL,MAXGRD,GA > REA >> > , >> >> >> > VCOORD. >> >> >> > >> >> >> > >> >> >> >Can you please provide me with some guidance as to what I may be doin > g >> >> >> >incorrectly. >> >> >> > >> >> >> >Thanks, >> >> >> >Simon. >> >> >> >X8895 >> >> >> > >> >> >> > >> >> >> >> >> >> Simon, >> >> >> does the out2 file exist, or are you attempting to have gdvint create > the >> >> >> file. If it exists, and the projection is not appropriate to your >> >> >> other file, then you can receive the above message. >> >> >> >> >> >> Can you provide me with the gdinfo projection information >> >> >> for the file "outfile" which you are trying to interpolate? >> >> >> >> >> >> I may need to download a copy of your original file to look at. >> >> >> >> >> >> Steve Chiswell >> >> >> ********************************************************************** > *** >> > *** >> >> >> Unidata User Support UCAR Unidata P > rog >> > ram >> >> >> (303)497-8644 P.O. 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