Don,
Sorry for taking so long in getting back to you--I've had to deal with some
other things, so this got lower priority. I tried the methodology you suggested
below, but I'm still getting an error:
Creating display: Contour Plan View
java.lang.NullPointerException
I attempted to aggregate by time once more, and I'm getting slightly different
behavior now--the grids are loading, but one on top of another--they aren't
shifting location like they should as the hurricane moves (the shifting does
show up if the grids are loaded individually). I've uploaded the files to the
motherlode server, as 2010083100_earl.tar. It contains 3 forecast hours, which
should be enough to test the time stepping. I've created the NetCDF files
myself, so it is possible that I'm not setting something up properly when I
create the files.
Thanks again for looking into this.
-Dan
Dr. Daniel P. Tyndall
NRC Postdoctoral Research Associate
United States Naval Research Laboratory
7 Grace Hopper Avenue Stop #2
Monterey, CA 93943
Phone: (831) 656-4054 - Fax: (831) 656-4769 - Email:
dan.tyndall.ctr@xxxxxxxxxxxxxxx
-----Original Message-----
From: idvusers-bounces@xxxxxxxxxxxxxxxx
[mailto:idvusers-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Don Murray
Sent: Friday, February 03, 2012 5:31 PM
To: idvusers@xxxxxxxxxxxxxxxx
Subject: Re: [idvusers] time loop issues
Hi Dan-
On 2/3/12 4:17 PM, Tyndall, Dr. Dan, Contractor, Code 7531 wrote:
> Hello fellow IDV users,
>
> I'm having issues with the time looping in IDV. I have a bunch of NetCDF
> files with individual forecast hours, and I would like to be able to use the
> playback controls to be able to step through the grids. Unfortunately, the
> grids will stay up on the screen when they shouldn't.
>
> I've already tried the "aggregate grids by time" option, which works
> to a point--provided the grid doesn't change, I can use the playback
> controls. However, if I have a nest following a hurricane, IDV fails
> to load the data. Are there any workarounds for this? I've found this
> issue come up in the IDVusers archive, although, they were brought up
> a while ago, so I am hoping there has been an update to the code to
> fix this. Thanks,
I'm not sure if this will work, but load in each dataset individually and then
use the Forumala->Grid->Time Steps->Merge time sequences formula and select
each dataset.
"Aggregate grids by time" uses netCDF-Java aggregation via NcML which
assumes that all grids have the same spatial domain. If there is only
one timestep per grid, the IDV will show the timestep on all frames. If the
above suggestion doesn't work, could you could package up the files in a zip
file and upload to:
http://motherlode.ucar.edu/repository/alias/idvupload
and someone could look into a solution.
Don
--
Don Murray
NOAA/ESRL/PSD and CIRES
303-497-3596
http://www.esrl.noaa.gov/psd/people/don.murray/
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