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>From: "Kevin Polston" <address@hidden> >Organization: UCAR/Unidata >Keywords: 200305210632.h4L6WQLd028434 >Hi, > >I am trying to do an hourly LI using the RUC 500 MB temps in place of >the observed 500 mb Temps. according to my pqact.conf file I am >downloading RUC grid #236 (or option [w]). The problem is in my grid >navigation table I don't see the 236 grid information. I was hoping you >might have that and be able to send it to me. I was able to use the 6 hr >ETA 500 MB temp forecast and create an hourly sfc ETA LI but I want to >be able to do it with the RUC as well. So I would appreciate it if you >could send me that info. Currently all I have for the RUC is grid #87 >and that is not compatible with the RUC data I am downloading. > >Thanks. > >Kevin Polston >Senior Instructor, NWSTC >Kansas City MO 64152 > >816-880-9314 ext 273 > Kevin, you can use gdinfo to print out the navigation information of the decoded grid #236. The grib decoders will use the GDS block within the data to define the grid, so they don't need the information to be in grdnav.tbl. If you are creating a file in gdcfil, you can copy the navigation from a decoded ruc file to a new file in CPYFIL by specifying the RUC- or you can specify the projection and bounds information using the values output by gdinfo. Steve Chiswell