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

John and Don,

Yes, the 3-hourly NARR-A datasets that can be retrieved through the NOMADS
catalog link that Don posted were the ones that I loaded that caused the
time aggregation issue.  John: would you be a point of contact for a
netCDF-Java fix for this issue or should I still cross-post this to the
support-idv list?  I hate to clutter email inboxes more than is necessary
for this topic... anyway thanks for all the feedback on this!

Mike U

On Tue, Jan 3, 2012 at 12:29 PM, Don Murray <don.murray@xxxxxxxx> wrote:

> John-
>
> I was using data from:
>
> http://nomads.ncdc.noaa.gov/**thredds/catalog/narr/201112/**
> 20111229/catalog.xml<http://nomads.ncdc.noaa.gov/thredds/catalog/narr/201112/20111229/catalog.xml>
>
> in the IDV catalog chooser.
>
> Don
>
>
> On 1/3/12 11:27 AM, John Caron wrote:
>
>> could someone post actual URLs that you are using? thanks
>>
>> On 1/3/2012 10:54 AM, Tom Whittaker wrote:
>>
>>> Hi Mike...
>>>
>>> Yes, I can duplicate the issue with the 3D (narr-a) data. The problem
>>> appears to be related to there being two "time" variables/dimensions
>>> in those files...at least the "aggregated" view of them. I think this
>>> should be sent in as a bug report.
>>>
>>> Either way, though, if you "choose" the individual files, you can then
>>> create a Display using the "Formulase -> Misc-> Make a time
>>> sequence...". You will have to pick the variable you want from each
>>> file in the pop-up widget (and be sure to click "Add selected>>"
>>> button after each one. It's a good idea to pick a "level",
>>> too...unless you are doing an isosurface; otherwise, the default range
>>> of the color table will be for all levels...and you'll have to set it
>>> for whatever level you are looking at.
>>>
>>> Hope that helps...
>>>
>>> tom
>>>
>>> On Tue, Jan 3, 2012 at 11:25 AM, Mike 
>>> Umscheid<mike.umscheid@noaa.**gov<mike.umscheid@xxxxxxxx>
>>> >
>>> wrote:
>>>
>>>> Oh wow, I never even considered that drop down box in the Chooser!
>>>> That's
>>>> exactly what I am looking for. I am able to aggregate successfully using
>>>> the narr-b files like you said... however, the narr-a files which
>>>> have the
>>>> 3D fields, are not being parsed correctly or something. After loading
>>>> the
>>>> aggregated grids and doing a right-click Properties>> Times, I see
>>>> all the
>>>> aggregated times, but when you go and select any of the fields
>>>> (either 2D or
>>>> 3D), the Times tab only displays one default time instead of the total
>>>> number of aggregated times. I wonder if this is a software bug?? Try
>>>> doing
>>>> the same thing for the narr-a files and see if you can duplicate this...
>>>>
>>>> Mike U
>>>>
>>>>
>>>> On Tue, Jan 3, 2012 at 10:58 AM, Tom Whittaker<whittaker@xxxxxxxx>
>>>> wrote:
>>>>
>>>>> Mike --
>>>>>
>>>>> Thanks for the link. Try this:
>>>>>
>>>>> In the Chooser, select the individual .grb files (CTRL+click) and then
>>>>> set the "Data source type" as "Aggregate grids by time"....that worked
>>>>> nicely for me (I assuming that the data sets you want are the ones
>>>>> under the dates, with names like: "narr-b 221 20111229 2100
>>>>> 000.grb")...
>>>>>
>>>>> tom
>>>>>
>>>>> On Tue, Jan 3, 2012 at 10:43 AM, Mike Umscheid<mike.umscheid@noaa.**
>>>>> gov <mike.umscheid@xxxxxxxx>>
>>>>> wrote:
>>>>>
>>>>>> 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<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@noaa.**
>>>>>>> gov <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
>>>>>>>> ______________________________**_________________
>>>>>>>> idvusers mailing list
>>>>>>>> idvusers@xxxxxxxxxxxxxxxx
>>>>>>>> For list information, to unsubscribe, visit:
>>>>>>>> http://www.unidata.ucar.edu/**mailing_lists/<http://www.unidata.ucar.edu/mailing_lists/>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> 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
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>> --
>>>>> 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
>>>>>
>>>>
>>>>
>>>
>>>
>> ______________________________**_________________
>> idvusers mailing list
>> idvusers@xxxxxxxxxxxxxxxx
>> For list information, to unsubscribe, visit:
>> http://www.unidata.ucar.edu/**mailing_lists/<http://www.unidata.ucar.edu/mailing_lists/>
>>
>
> --
> Don Murray
> NOAA/ESRL/PSD and CIRES
> 303-497-3596
> http://www.esrl.noaa.gov/psd/**people/don.murray/<http://www.esrl.noaa.gov/psd/people/don.murray/>
>
> ______________________________**_________________
> idvusers mailing list
> idvusers@xxxxxxxxxxxxxxxx
> For list information, to unsubscribe, visit: http://www.unidata.ucar.edu/*
> *mailing_lists/ <http://www.unidata.ucar.edu/mailing_lists/>
>