Re: [idvusers] How do you time step 3-hourly NARR data in the IDV?

Thanks for the reply Tom,

I am not having any luck with 2 or 3... but it does sound like I need to
investigate option 1 as I am not all that familiar with NCML in combining
datasets.  The NARR data I have been using is straight from the NARR
catalog through the IDV (
http://nomads.ncdc.noaa.gov/thredds/catalog/narr/catalog.xml).  So I guess
what I would need to do then is save the individual hourly dataset as a
local grid (*.nc) and then use one of the available tools (I see something
called ToolsUI?) to merge the files into one netCDF?

Mike U

On Tue, Jan 3, 2012 at 9:50 AM, Tom Whittaker <whittaker@xxxxxxxx> wrote:

> Hi Mike...
>
> The display rule is that if the data object has only one time, then it
> is displayed along with all other "time steps"; hence, since both 18z
> and 21z data have just one "time", they are displayed together.
>
> I'm not familiar with the NARR data or how you are loading it, but
> there are a couple of ways to make individual time period data be
> combined:
>
> 1. using NCML to logically combine times
> 2. using the Chooser and picking more than one time/file using
> SHIFT+click or CTRL+click
> 3. using the Formula under "Miscellaneous -> Make a time sequence from
> single time grids"
>
> Hope this helps.
>
> tom
>
> On Tue, Jan 3, 2012 at 9:13 AM, Mike Umscheid <mike.umscheid@xxxxxxxx>
> wrote:
> > IDV Users,
> >
> > I'm not sure how many of you interrogate NARR datasets on the IDV, but
> I'm
> > doing more of it now through the IDV using bundles and ISL scripts.  One
> > big limitation I am finding is that I cannot time step/animate through
> more
> > than one data file on the Map View pane.  For instance, if you load in
> > fields from an 18z file and then also a 21z file, the IDV just displays
> the
> > 21z data right on top of the 18z data.  How do you configure the IDV such
> > that for these hourly dataset files you can create animations and step
> back
> > and forth through various times?  Any help/guidance is appreciated!
>  Thanks,
> >
> > Mike U
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>
>
> --
> Tom Whittaker
> University of Wisconsin-Madison
> Space Science & Engineering Center (SSEC)
> Cooperative Institute for Meteorological Satellite Studies (CIMSS)
> 1225 W. Dayton Street
> Madison, WI  53706  USA
> ph: +1 608 262 2759
>