[gradsusr] About Masking

[Govind Jha]

Dear all,
I have a gridded data in netcdf format.When I display variable in grads, It also plots outside the Nepal boundary.I wish to plot only inside the Nepal boundary.
ga-> sdfopen GPM_apr_2016.nc 
Scanning self-describing file:  GPM_apr_2016.nc
SDF file has no discernable time coordinate -- using default values.
SDF file GPM_apr_2016.nc is open as file 1
LON set to 79.45 88.55 
LAT set to 24.95 31.55 
LEV set to 0 0 
Time values set: 1:1:1:0 1:1:1:0 
E set to 1 1 
ga-> q file
File 1 : 
  Descriptor: GPM_apr_2016.nc
  Binary: GPM_apr_2016.nc
  Type = Gridded
  Xsize = 92  Ysize = 67  Zsize = 1  Tsize = 1  Esize = 1
  Number of Variables = 1
     rain  0  y,x  rain

ga-> set mpdset hires
MPDSET file name = hires
ga-> set gxout shaded
ga-> d rain
Contouring: 10 to 130 interval 10 
ga-> set display color white
ga-> c
ga-> d rain
Contouring: 10 to 130 interval 10 
ga-> printim apr.png
Created PNG file apr.png




Any suggestion and advice will be highly appreciated. 





With Regards     ..................................................Govind Kumar Jha    
................................................... Assistant Meteorologist 
(Agro-Meteorology Section)
Department of Hydrology and Meteorology (DHM)
P.O. Box 406 Naxal, Nagpokhari, Kathmandu, Nepal
Tel: +977 1 4436272, 4432409
Fax: +977 1 4429919, 4432137
www.dhm.gov.np, www.hydrology.gov.np, www.mfd.gov.np
............................................................................. Mobile Number: 9779846265433 Email Id: govind_jha65 at yahoo.com..........................................................                            Secretary .......................................
Student Organization Of Meteorology (SOM) ,  Tri -Chandra Campus   Ghantaghar,kathmandu
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