On 4/30/2013 9:19 PM, Kevin Manross wrote:
Hello!
I'm *just* now starting to explore the jython capabilities in the IDV. I
would like to write a script that the user enters a lat/lon and a
date/time and from that, have the IDV plot an image for a radar nearest
to that point and nearest that time. This would be run headless for web
images.
I'm working on a "nearest radar chooser", but the big hurdle I'm facing
is: is there a way with IDV/Jython to read and parse the top level catalog
http://motherlode.ucar.edu:8080/thredds/catalog/nexrad/level2/catalog.xml
or even
http://motherlode.ucar.edu:8080/thredds/catalog/nexrad/level2/Kxxx/catalog.xml
to get the available dates and times so I could then build the url for
makeDataSource?
-kevin.
Kevin,
This is a very interesting idea.
In the IDV, we use a table (xml file) to store all radar stations
information. There are a few APIs in the TDSRadarDatasetCollection class
you can use to get a list of stations. You need to write an API to find
the nearest radar station with the input of lat/lon. This probably the
big hurdle for you. After that, there are APIs already that can be used
to parse the server catalog and communicate with the server. You can
reference the TDSRadarChooser and TDSRadarDatasetCollection classes.
The benefit of using Jython is that you can invoke many Java class
directly, so I think this project is very interesting. Let us know if
you need more help.
Yuan
