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Hi Don, The first method generates a "visad.UnitException". The second one (with noUnit) generates "java.lang.NullPointerException". Any ideas as to what can be done? Thanks, Paul On 28 August 2013 08:25, Paul Graham <meteorpaul@xxxxxxxxx> wrote: > Hi Don, > > The first method generates a "visad.UnitException". The second one (with > noUnit) generates "java.lang.NullPointerException". Any ideas as to what > can be done? > > Thanks, > > Paul > > > On 27 August 2013 23:19, Don Murray (NOAA Affiliate) > <don.murray@xxxxxxxx>wrote: > >> I would expect that the second one would work. What errors do you get? >> >> Don >> >> >> On 8/26/13 8:49 PM, Paul Graham wrote: >> >>> Dear IDV Users, >>> >>> What is the best way to add two different 4d grids (ie. having different >>> units) in order to create dimensionless field? >>> >>> Eg. Suppose, for whatever reason, you wanted to add convective available >>> potential energy (CAPE), F1, and rainfall rate, F2. >>> >>> I have not been able to get either of the following to work (IDV produces >>> errors): >>> >>> def simpleAdd(F1,F2): >>> res = add(F1,F2) >>> return res >>> >>> def simpleAdd(F1,F2): >>> res = add(noUnit(F1),noUnit(F2)) >>> return res >>> >>> What should I do? >>> >>> Thanks, >>> >>> Paul >>> ______________________________**_________________ >>> 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/> > > > > > -- > >
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