[gradsusr] HYCOM irregular grids

[Akhilesh Mishra]

Dear GrADS Users,
Is there anyway to plot HYCOM outputs in irregular grid netcdf file using
OpenGrADS or GrADS. In these HYCOM output files, Latitude and Longitude are
defines as variables, I was trying to plot netcdf file, they do open in
GrADS using "sdfopen". I wish to know if there is anyway i can reassign X
and Y to 'longitude' and 'latitude', so that maps would fall into right
place.

Thanks
-Mishra

Here is the detail of sdfopen and q ctlinfo

ga-> sdfopen 077_archv.1966_3zts-int.nc
Scanning self-describing file:  077_archv.1966_3zts-int.nc
SDF file 077_archv.1966_3zts-int.nc is open as file 1
LON set to 1 500
LAT set to 1 382
LEV set to 6000 6000
Time values set: 1966:1:7:17 1966:1:7:17
E set to 1 1
ga-> q ctlinfo
dset 077_archv.1966_3zts-int.nc
title HYCOM ATLg0.08
undef 1.26765e+30
dtype netcdf
xdef 500 linear 1 1
ydef 382 linear 1 1
zdef 34 levels 6000 5500 5000 4500 4000 3500 3000 2500
 2000 1750 1500 1400 1300 1200 1100 1000 900 800
 700 600 500 400 300 250 200 150 125 100
 75 50 30 20 10 0
tdef 13 linear 17Z07JAN1966 31560mn
vars 5
Date=>date  0  t  date
Latitude=>latitude  0  y,x  latitude
Longitude=>longitude  0  y,x  longitude
temperature=>temperature  34  t,z,y,x    temp mean [07.7H]
salinity=>salinity  34  t,z,y,x   salinity mean [07.7H]
endvars
ga->
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