Hi Paul,
We've had people upload larger files :-) I'm not opposed to grabbing
them from a remote server if you have that option. I think, long term,
the best thing to do would be to get netCDF-Java to handle this, as it
would help out clients other than the IDV. However, it could be possible
to hack together something that could work. But, for our testing
purposes, I'd still need some sample file to work with.
Cheers!
Sean
On 2/10/14, 2:37 PM, Paul Graham wrote:
Hi Sean/Don,
As it turns out, the Merge Timestep Sequences worked! (See attachment).
However, as Don pointed out, it requires each timestep to be in a separate
file, opened one by one, allowing only one field/display that has to be
decided in advance.
Perhaps if there was a way for the mergeTimeSequences function to somehow
be incorporated in the Data Choosers/Data Source Type menu it would be more
practical.
Sean - unfortunately the files I currently have are huge - 406Mb per
timestep - so probably impractical to upload at this time. But if I can
obtain smaller samples I'll let you know.
Paul
On 11 February 2014 02:47, Don Murray (NOAA Affiliate)
<don.murray@xxxxxxxx>wrote:
Paul-
As Sean notes, there is no convention for handling this, but the
underlying IDV framework will handle grids with time varying domains. An
example of this is satellite imagery which can vary the region covered from
time to time (the old Unidata floater was used as the test case for the
code). I don't believe the Aggregate WRF Grids by Time will work, because
that relies on the underlying netCDF-Java library to do the aggregation and
I think it assumes a constant domain to work. But you could try it.
Another way to do it (although a pain) would be if you had each time step
in a separate file, would be to load all them in as single grids and use
the Grids->Time Steps->Merge timestep sequences formula to do the merge.
This bypasses the netCDF-Java aggregation.
Don
On 2/10/14 7:04 AM, Sean Arms wrote:
Greetings Paul,
We've been looking for some example files to work with using this
concept. I do not believe there is a standard way to handle the case of
time dependent latitude/longitude (standard as in Climate and Forecast
standard). Would you be willing to share a few of the individual files
for us to take a look? If so, you can upload them here:
http://motherlode.ucar.edu/repository/alias/idvupload
I have some ideas on this, but it will take some time to play with.
Cheers!
Sean
On 2/9/14, 7:44 PM, Paul Graham wrote:
Hi IDV Users,
Is it possible for IDV to aggregate grids where the horizontal domain is
changing position, as is the case for WRF vortex following nests?
Thanks,
Paul
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Don Murray
NOAA/ESRL/PSD and CU-CIRES
303-497-3596
http://www.esrl.noaa.gov/psd/people/don.murray/
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