[gradsusr] map projection error: invalid coords for nps

[mberdahl at envsci.rutgers.edu]

Thanks very much, Lee - that worked!
Mira

> Mira,
> For NPS projection, try setting your latitude dimensions solely to the
> northern hemisphere.  For example, set lat 20 90.
>
> good luck,
> Lee
> On Sep 21, 2012, at 4:56 PM, mberdahl at envsci.rutgers.edu wrote:
>
>> Hi all,
>>
>> I am trying to plot some wind vectors in GrADS from a netcdf file, on a
>> polar stereographic projection, but I receive the following error:
>>
>> Map Projection Error:  Invalid coords for NPS
>>  Will use linear lat-lon projection
>>
>> A nice lat/lon plot is produced without a problem, but any other
>> projection I choose gives the above error.
>>
>> I have copied my ctl file and the grads commands I execute below.
>> Does anyone have any thoughts on how to resolve this issue?
>>
>> Many thanks!
>> Mira
>>
>>
>> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>> GrADS commands:
>>
>> reinit
>>
>> *what file to open
>> open MPI_wind_diff.ctl
>>
>> *set projection, display background, and resolution of background
>> set display color white
>> set background 1
>> set mpdset hires
>> set mproj nps
>> set grid on
>> set gxout vector
>>
>> d uaDiff;vaDiff
>> set arrlab on
>>
>> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
>> CTL FILE:
>>
>> dset ^MPI_wind_diff.nc
>> dtype netcdf
>> title Difference between ua and va for LIA to MCA periods
>> undef -999
>> xdef 192 linear  0 1.875
>> ydef 96  linear  -88.5721664428711 1.8496
>> tdef  1 linear 06Z01JAN1400  1mo
>> zdef  1 levels 500
>> vars 4
>> longitude=>lon 1 y,x **longitude
>> latitude=>lat 1 y,x **latitude
>> uaDiff=>uaDiff 1 y,x **ua difference (m/s)
>> vaDiff=>vaDiff	1 y,x ** va difference (m/s)
>> endvars
>>
>>
>>
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>
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