Hi all. . . I'm having a bit of a problem successfully viewing global reanalysis data (NNRP) using nmap2. I believe the problem is that I'm not correctly handling the fact that the data is a series of analyses (f000), rather than forecasts. Here's what I'm doing. First, I'm subsetting the original pgb grib files using wgrib, so I'm creating grib files with just the variables I want to convert. Then I use dcgrib2 to convert these into monthly gempak files with the fields I want. It appears to me that the time tags are getting entered correctly - at least when I use something like gdinfo. But nothing I do is letting me visualize the data in nmap2. Here's an example of the output from gdinfo for PMSL, from a file containing data for January 2009: NUM TIME1 TIME2 LEVL1 LEVL2 VCORD PARM 28 090101/0000F000 0 NONE PMSL 60 090101/0600F000 0 NONE PMSL 92 090101/1200F000 0 NONE PMSL 124 090101/1800F000 0 NONE PMSL 156 090102/0000F000 0 NONE PMSL 188 090102/0600F000 0 NONE PMSL 220 090102/1200F000 0 NONE PMSL 252 090102/1800F000 0 NONE PMSL 284 090103/0000F000 0 NONE PMSL 316 090103/0600F000 0 NONE PMSL 348 090103/1200F000 0 NONE PMSL 380 090103/1800F000 0 NONE PMSL 412 090104/0000F000 0 NONE PMSL 444 090104/0600F000 0 NONE PMSL 476 090104/1200F000 0 NONE PMSL 508 090104/1800F000 0 NONE PMSL (etc etc) We're editing the table files for nmap2, and what is currently happening is that _all_ of the times show up in the "Data Source" dialog window, as if they were separate "forecasts" in separate gem files. But if I select any of them, I can't get any of them to display - and in reality there is only a single gem file that contains all those times. And I can successfully plot the data using gdcntr/gdplot/etc. I'm thinking maybe what I should do is somehow convince nmap2 that each month is a single "forecast" (even though they are really all analyses), with the first time being labeled as f000, 6 hours later as f006, 12 hours later as f012, etc, etc. But I don't know how to go about doing that - or even if that is the best approach. Is there any utility that will let me change the time tags in a gem file? Any thoughts? Thanks, Mike -- Mike Zulauf Meteorologist Wind Asset Management Iberdrola Renewables 1125 NW Couch, Suite 700 Portland, OR 97209 Office: 503-478-6304 Cell: 503-913-0403 This message is intended for the exclusive attention of the address(es) indicated. Any information contained herein is strictly confidential and privileged, especially as regards person data, which must not be disclosed. If you are the intended recipient and have received it by mistake or learn about it in any other way, please notify us by return e-mail and delete this message from your computer system. Any unauthorized use, reproduction, alteration, filing or sending of this message and/or any attached files to third parties may lead to legal proceedings being taken. Any opinion expressed herein is solely that of the author(s) and does not necessarily represent the opinion of Iberdrola. The sender does not guarantee the integrity, speed or safety of this message, not accept responsibility for any possible damage arising from the interception, incorporation of virus or any other manipulation carried out by third parties.