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On 7/15/14, 9:02 AM, Hein Zelle wrote:
Dear IDV developers,
the email below got no response from the IDV users list, I hope
someone here can help. I'm trying to put ascat swath data in NetCDF
in such a way that IDV will open the files and allow scrolling through
time, showing the appropriate swath for each time step.
I have now ended up with 1 file per swath (reduced to 1 hour of data)
following the ghrsst example. See the attached ncdump output for the
structure. These files load properly and IDV recognizes the time
value!
Time scrolling doesn't work: after loading multiple files, IDV (5.0)
always shows all swaths, independent of what time value is selected in
the time slider. I've added time bounds to no effect. I tried using
a master time driver from a different dataset to no effect.
Is this a bug in IDV? Can anyone tell me if this can be made to work
the way I intend?
Example files are at
http://freja.argoss.nl/file-exchange/ascat_bmta_20140715_00.nc
http://freja.argoss.nl/file-exchange/ascat_bmta_20140715_01.nc
http://freja.argoss.nl/file-exchange/ascat_bmta_20140715_02.nc
http://freja.argoss.nl/file-exchange/ascat_bmta_20140715_03.nc
To reproduce, load each one (make a wind barb plan view or a color
shaded plan view) and try to scroll through time.
Thanks for your help,
Kind regards
Hein Zelle
----- Forwarded message from Hein Zelle <hein.zelle@xxxxxxxxxxxxx> -----
Date: Thu, 26 Jun 2014 17:17:14 +0200
From: Hein Zelle <hein.zelle@xxxxxxxxxxxxx>
To: IDV users list <idvusers@xxxxxxxxxxxxxxxx>
Subject: ascat data in netcdf in IDV
Dear IDV users,
I'm at it again - struggling with netcdf file formats that will work
in IDV. Any pointers will be appreciated! I would like to put ascat
data (a left and right swath of data) in netcdf in such a way that IDV
will
- visualize the data as a colour shaded plan view
- skip trough time per orbit or per hour
The attached file dump (testout2.dump) almost works: I concatenate all
orbits onto a record (time) axis and use attributes to get IDV to
understand time. IDV loads the file, shows the data variables and it
shows the time values but it won't plot anything (value plot nor color
shaded). No error, just no plot. (IDV version 3.1u1)
Can anyone spot what's wrong with testout2.dump? The file is at
http://freja.argoss.nl/file-exchange/testout2.nc
Even better, does anyone have a working example of a file containing
satellite orbits with swaths?
Some observations:
- the record axis cannot be called 'time', IDV doesn't read the file.
- I don't know what's the proper featureType for this file, I can't
find a relevant example in the CF conventions.
- I tried adding a third dimension (hourly time axis) with a separate
record axis, but I couldn't get that to load in IDV at all.
Thanks for your help,
Kind regards
Hein
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