To respond to Brian's question about AWIPS-II...
While it's true that AWIPS-II stores its data in HDF-5, the metadata is
stored in a Postgres database. So, while you may have the data itself
in an HDF5 store, you won't know anything about it without the
database. I'm not completely sure why the system was designed that way,
but there you have it.
Matt @ OUN
Hoeth, Brian R. (JSC-WS8)[NOAA] wrote:
This seems like as good a time as any to chime in ... I have always been
frustrated w/ the fact that Unidata NetCDF is not the same as AWIPS NetCDF. I
thought the whole reason to have NetCDF files is that they are a Common Data
Format (CDF). What's even more puzzling is that the folks who develop AWIPS
(GSD) work right down the road from Unidata. You would think there would be
more collaboration?
OK, enough soap boxing ... hopefully my comments haven't turned you away and
you are still reading ... what I'm mainly interested in is the future. I'd
like to make sure that the problems of the past do not repeat themselves. So,
with that said, are the IDV developers working closely (or at all?) with the
AWIPS II developers? Will IDV be able to display AWIPS II data (which is
mainly in HDF vs. NetCDF from what I understand)?
Thanks for listening! Sorry if I've offended anyone.
Brian Hoeth
NWS Spaceflight Meteorology Group
Johnson Space Center
Houston, TX
281-483-3246
-----Original Message-----
From: idvusers-bounces@xxxxxxxxxxxxxxxx
[mailto:idvusers-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Don Murray
Sent: Thursday, May 13, 2010 9:27 AM
To: Matt Foster
Cc: idvusers@xxxxxxxxxxxxxxxx
Subject: Re: [idvusers] Error opening AWIPS NetCDF grid
Hi Matt-
Please upload the sample file to:
http://motherlode.ucar.edu/repository/alias/idvupload
and we'll take a look.
AWIPS has a non-standard way (well I guess it's an AWIPS standard) of
storing variables (e.g. Temperature) on multiple vertical coordinates
all in one variable and then the reader has to break that in to
meaningful fields to present to the user (e.g. Temperature @ pressure,
Temperature @ 2m, Temperature in a layer, etc). From your analysis, it
looks like the IDV (actually the netCDF-Java library) might not be doing
this correctly. It could be that the format of the AWIPS grids has
changed slightly since the convention was written many years ago, or the
file is not written correctly.
Don Murray
Matt Foster wrote:
I'm trying to view an AWIPS NetCDF model grid file, and I'm getting an
error when trying to load it. The error is coming from line 186 of
AWIPSConvention.java, which is the breakupLevels() method. The error is
a "NoSuchElementException" coming from the StringTokenizer.nextToken().
I'm guessing someone is probably going to want to see the grid file in
question. gzip'd it is around 700MB, so I'm not sure how to go about
getting it available to others.
Any suggestions would be greatly appreciated. This is data relating to
the tornado outbreak we had here on Monday, so there is great interest
in viewing it outside of AWIPS.
Matt @ WFO OUN
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