[visad] Missing Data and Memory Usage

Kevin Manross kevin.manross at noaa.gov
Wed Jan 9 08:22:37 MST 2008


Happy New Year, Y'all!

I'm working with trying to view some radar data in the IDV.  Without 
getting into a great amount of detail, I seem to be taking a 
considerable memory hit with a data set that is about 75% "missing data" 
(i.e., a 90 degree sector scan, where the other 270 degrees are produced 
but set to "missing data").  We have the missing data flag set in our 
netCDF files and indeed those points are not being displayed. 

What I would like to know is whether those points marked as "missing 
data" are still held in memory.  If so, we'll examine whether we can 
create a "uniform" sector scan for our data.

I'm guessing this is at the VisAD level, hence the post to this group. 

Thanks a bunch!!

-kevin.

-- 
+-----------------------------------------------------+
Kevin L. Manross           |  ** New Address **
CIMMS Research Associate   |     120 David L. Boren Bvd
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<kevin.manross at noaa.gov>   |     405.325.6385
www.cimms.ou.edu/~kmanross |
"My opinions are my own and not representative of
CIMMS, NSSL, NOAA or any affiliates"
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