Dear Sir/Madam,<div> </div><div> Please could you help us as to how can we open the following in grads:</div><div><p style>I have constructed a ctl file as follows, but I do not know how to set some values in <span style="background-image:initial;background-color:yellow;background-repeat:initial initial">pdef</span> parameters (for ex. ipole/jpole, lonref), & how to set XDEF/YDEF values<u></u><u></u></p>
<p style><u></u> <u></u></p><p style>DSET ^<a href="http://asi-n6250-20020619-v5i.nc/" target="_blank" style="color:rgb(17,85,204)">asi-n6250-20020619-v5i.nc</a><br>DTYPE netcdf <br>TITLE AMSRE daily seaice concentrations at 6250 km resolution<br>
UNDEF 1000<br>PDEF 1216 1792 nps ipole jpole lonref 6250 -1<br>XDEF 1216 linear -179.5 1<br>YDEF 1792 linear -59.5 1<br>ZDEF 1 linear 1 1<br>TDEF 1 linear 00Z19jun2002 1Dy<br>VARS 1<br>seaicecon=>seaice 0 t,x seaice<br>
ENDVARS<u></u><u></u></p><p style><u></u> <u></u></p><p style><u></u> <u></u></p><p class="MsoNormal" style><span style="font-size:10pt;font-family:'Courier New'">Corner coordinates of the map are<u></u><u></u></span></p>
<p class="MsoNormal" style><span style="font-size:10pt;font-family:'Courier New'"> lat -39.23° lat -39.23°<u></u><u></u></span></p><p class="MsoNormal" style><span style="font-size:10pt;font-family:'Courier New'"> lon 317.76° _______ lon 42.24°<u></u><u></u></span></p>
<p class="MsoNormal" style><span style="font-size:10pt;font-family:'Courier New'"> | |<u></u><u></u></span></p><p class="MsoNormal" style><span style="font-size:10pt;font-family:'Courier New'"> lat -41.45 | | lat -41.45°<u></u><u></u></span></p>
<p class="MsoNormal" style><span style="font-size:10pt;font-family:'Courier New'"> lon 225.00° |______| lon 135.00°<u></u><u></u></span></p><p style><u></u> <u></u></p><p style><u></u> <u></u></p><p style>
The ncdump output of the netcdf file is as follows:<u></u><u></u></p><p style><u></u> <u></u></p><p style>netcdf asi-n6250-20020619-v5i {<u></u><u></u></p><p style>dimensions:<u></u><u></u></p><p style> x = 1216 ;<u></u><u></u></p>
<p style> y = 1792 ;<u></u><u></u></p><p style> time = 1 ;<u></u><u></u></p><p style>variables:<u></u><u></u></p><p style> int latitude(y, x) ;<u></u><u></u></p><p style> latitude:units = "degrees_north" ;<u></u><u></u></p>
<p style> latitude:scale_factor = 1.e-05f ;<u></u><u></u></p><p style> int longitude(y, x) ;<u></u><u></u></p><p style> longitude:units = "degrees_east" ;<u></u><u></u></p><p style> longitude:scale_factor = 1.e-05f ;<u></u><u></u></p>
<p style> double time(time) ;<u></u><u></u></p><p style> time:units = "seconds since 2002-01-01 00:00:00" ;<u></u><u></u></p><p style> short icecon(time, y, x) ;<u></u><u></u></p><p style> icecon:units = "%" ;<u></u><u></u></p>
<p style> icecon:missing_value = -1000s ;<u></u><u></u></p><p style> icecon:_FillValue = -1000s ;<u></u><u></u></p><p style> icecon:scale_factor = 0.1f ;<u></u><u></u></p><p style><u></u> <u></u></p>
<p style>// global attributes:<u></u><u></u></p><p style> :Conventions = "CF-1.0" ;<u></u><u></u></p><p style> :title = "Daily gridded ARTIST Sea Ice (ASI) Concentration in percent from AMSR-E 89 GHz data, grid resolution: 6.25 km, ASI Version: 5.6, missing data interpolated" ;<u></u><u></u></p>
<p style> :Based_upon = "Spreen et al. data set available at <a href="http://www.seaice.de/" target="_blank" style="color:rgb(17,85,204)">www.seaice.de</a>" ;<u></u><u></u></p><p style> :Creation_date = "2011-02-17" ;<u></u><u></u></p>
<p style> :netCDF_created_by = "Stefan Kern" ;<u></u><u></u></p><p style> :Created_with = "IDL-routine <a href="http://read_asi_amsre.pro/" target="_blank" style="color:rgb(17,85,204)">read_asi_amsre.pro</a>" ;<u></u><u></u></p>
<p style> :Date = "20020619" ;<u></u><u></u></p><p style> :Hemisphere = "n" ;<u></u><u></u></p><p style>data:<u></u><u></u></p><p style><u></u> <u></u></p><p style> latitude =<u></u><u></u></p>
<p style> 3395657, 3398302, 3400944, 3403585, 3406223, 3408859, 3411492, 3414123,<u></u><u></u></p><p style> 3416753, 3419379, 3422004, 3424626, 3427246, 3429864, 3432480, 3435093,<u></u><u></u></p><p style> 3437704, 3440312, 3442919, 3445522, 3448124, 3450723, 3453320, 3455915,<u></u><u></u></p>
<p style> 3458507, 3461097, 3463685, 3466270, 3468852, 3471433, 3474011, 3476586,<u></u><u></u></p><p style> 3479160, 3481730, 3484299, 3486864, 3489428, 3491989, 3494547, 3497103,<u></u><u></u></p><p style> 3499657, 3502208, 3504757, 3507303, 3509847, 3512388, 3514927, 3517463,<u></u><u></u></p>
<p style> 3519996, 3522527, 3525056, 3527582, 3530105, 3532626, 3535145, 3537660,<u></u><u></u></p><p style> 3540173, 3542684, 3545192, 3547697, 3550200, 3552700, 3555198, 3557693,<u></u><u></u></p><p style> 3560185, 3562674, 3565161, 3567646, 3570127, 3572606, 3575082, 3577556,<u></u><u></u></p>
<p style> 3580027, 3582495, 3584961, 3587423, 3589883, 3592340, 3594795, 3597247,<u></u><u></u></p><p style> 3599696, 3602142, 3604586, 3607026, 3609464, 3611899, 3614332, 3616761,<u></u><u></u></p><p style> 3619188, 3621612, 3624033, 3626451, 3628866, 3631279, 3633689, 3636095,<u></u><u></u></p>
<p style> 3638499, 3640900, 3643298, 3645694, 3648086, 3650475, 3652862, 3655246,<u></u><u></u></p><p style> .........................etc</p><p style><br></p><p style>Thanking you in anticipation.</p><p style>Yours Sincerely,</p>
<p style>Beas Barik.</p></div>