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[IDV #EGE-141477]: sub-secting grids

Hi Tom-

> When I want to sub-set the grids from:
> 
> <http://nomad3.ncep.noaa.gov:9090/dods/reanalyses/reanalysis-2/month/pgb/pgb.anl.climo>
> 
> (using the URL chooser for "grids"), the "Spatial Subset" tab under
> the DataSource "Properties"
> [right-click on the DataSource in the Field Selector], does not give
> me the ability to choose a level; whereas, if I pick a 3D grid in the
> Field Selector, I do get the opportunity under the "Level" tab in the
> lower-right corner of the Field Selector pane.

This is on our list of things to do, but will most likely not
make it into the 2.3 release.

> Why is this important?  Well, the above data set does not have wind
> components with the "right" names, so I have to use the "Any Field"
> formula to display vectors, and when I tried to just get the level I
> wanted, I could not.

You could add the names to the U and V aliases using the 
Tools->Parameter Aliases menu.  That would allow you to do the
subsetting when you select the field and display.

> I should hasten to add, though, that being able to specify "every 3rd
> level" might be important, but so would be clicking on a few
> individual level values....if they are known at that point.

Different fields can have different levels which is why we can't
subset on particular levels at the data source.

Don Murray

Ticket Details
===================
Ticket ID: EGE-141477
Department: Support IDV
Priority: Urgent
Status: Open