[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[IDV #GBB-964494]: IDV - reading .nc file

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: [IDV #GBB-964494]: IDV - reading .nc file
  • Date: Fri, 30 May 2008 00:18:56 -0600
Hi Michelle,

The 2003.BAMEX.NRL_P3*.nc file uses the "NCAR-RAF/nimbus"
convention version 1.2 but it doesn't contain a variable called "ALT"
which the 1.2 version expects. You can wrap the dataset in NcML to rename
the "GALT" variable to "ALT". There are a few changes in the units as well
that will help. Below is some NcML I put together.

Looks like the other file is similar but the version is "1". We support
"1.2" and "1.3". The "NCAR-RAF/nimbus" convention document is available
at http://www.eol.ucar.edu/raf/Software/netCDF.html.

Here is the NcML so far for the 2003.BAMEX.*.nc file:


<?xml version="1.0" encoding="UTF-8"?>
<netcdf xmlns="http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2";
location="2003.BAMEX.NRL_P3.LRT.RF04.20030602.154500_014050.PNI.nc">
  <variable name="ALT" orgName="GGALT">
    <attribute name="units" value="meters" />
  </variable>
  <variable name="LAT">
    <attribute name="units" value="degrees_north" />
  </variable>
  <variable name="LON">
    <attribute name="units" value="degrees_east" />
  </variable>

</netcdf>

I'm getting further but still having some trouble getting that to read in.

I'm out of town till next Wednesday. I'll dig into this a bit more then. Sorry
for the delay.

Ethan


> Hello,
>
> Thanks for your quick response - much appreciated.
>
> Here is a link to download both the NOAA P-3 and NRL P-3 flight tracks:
>
> http://thunder.atmos.colostate.edu/~mharrold/
>
> Thank you,
> Michelle Harrold

Ticket Details
===================
Ticket ID: GBB-964494
Department: Support netCDF Java
Priority: Normal
Status: Open