Re: [idvusers] Domain moving coordinate aggregation?

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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-- 
Paul Graham
Email: meteorpaul@xxxxxxxxx
Mobile: 0403003784

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