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============================================================================== Robb Kambic Unidata Program Center Software Engineer III Univ. Corp for Atmospheric Research rkambic@xxxxxxxxxxxxxxxx WWW: http://www.unidata.ucar.edu/ ============================================================================== ---------- Forwarded message ---------- Date: Fri, 19 Mar 2004 12:51:41 -0500 (EST) From: Lori Thompson <Lori.Thompson@xxxxxxxx> To: Robb Kambic <rkambic@xxxxxxxxxxxxxxxx> Subject: Re: grib=>nc time axis problem Thanks, Rob. I added the time series to the final concatenated file and the took care of the additional record frames. On Fri, 19 Mar 2004, Robb Kambic wrote:
On Thu, 18 Mar 2004, Lori Thompson wrote: > Hi Robb. I wrote to you a couple weeks ago regarding a conversion from > grib to nc data. During the conversion using gribtocdl and gribtonc, I > received an additional record dimension which contained blank data. As a > solution, after gribtocdl, I edit the cdl file and change valtime_offset > in the dimensions section equal to 1 rather than 2 and in the data > section, change valtime_offset from 0, model_time to model_time. This Lori, My solution to this is in this msg: http://www.unidata.ucar.edu/cgi-bin/msgout?/glimpse/decoders/627 > resulted in 1 record frame for the time series. However, the concatenated > time series file does not contain a time axis. I tried to edit the cdl > file by replacing record with time, add the time variable with the > metadata, and add the time under the data section equal to the model time. I would edit the cdl by setting the dimension "valtime_offset" to the number of hours in the time series. In the data section set the variable "valtime_offset" to the actual hours in the time series. ie valtime_offset = 84, 96, 108, 132, 144, 120, 192, 240 ; This is how the ldm pqact is set up to decode the model files resulting with one record per hour. Hopefully this solves your problem. Robb.. > However, this is producing 2 frames for each file again when it is only > supposed to be one. I tried to remove the valtime and reftime variables > and am getting a bus error. There seems to be more time variables with > this newest version of the decoders and I'm not sure which ones are to be > retained. Instead of editing the cdl file, can I add a time axis and > metadata to the singe time series resultant file, since this one produces > the correct amount of frames? > > Thanks in advance for your help. > Lori > > -- > ---------------------------------------------------- > Lori A. Thompson > Applications Programmer/RS Information Systems, Inc. > Geophysical Fluid Dynamics Laboratory/NOAA > Princeton University Forrestal Campus/Route 1 > PO Box 308 > Princeton, NJ 08542 > Phone: 609-452-6563 > Fax: 609-987-5063 > http://www.gfdl.noaa.gov/~lat > ============================================================================== Robb Kambic Unidata Program Center Software Engineer III Univ. Corp for Atmospheric Research rkambic@xxxxxxxxxxxxxxxx WWW: http://www.unidata.ucar.edu/ ==============================================================================
-- ---------------------------------------------------- Lori A. Thompson Applications Programmer/RS Information Systems, Inc. Geophysical Fluid Dynamics Laboratory/NOAA Princeton University Forrestal Campus/Route 1 PO Box 308 Princeton, NJ 08542 Phone: 609-452-6563 Fax: 609-987-5063 http://www.gfdl.noaa.gov/~lat
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