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[IDV #LIK-107130]: netcdf 2dlat lon question

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  • Subject: [IDV #LIK-107130]: netcdf 2dlat lon question
  • Date: Thu, 13 May 2010 12:49:31 -0600
> hello
> I created netcdf file using fortran.
> here is its structure
> 
> perm {
> dimensions:
> y = 1320 ;
> x = 2015 ;
> time = 3 ;
> variables:
> float y(y) ;
> y:units = "km" ;
> y:long_name = "y coordinate of projection" ;
> y:standard_name = "projection_y_coordinate" ;
> float x(x) ;
> x:units = "km" ;
> x:long_name = "x coordinate of projection" ;
> x:standard_name = "projection_x_coordinate" ;
> double lat(x, y) ;
> lat:units = "degrees_north" ;
> double lon(x, y) ;
> lon:units = "degrees_east" ;
> int time(time) ;
> time:units = "1980-08-01T12:00:00Z" ;
> time:long_name = "time" ;
> double temperature(time, y, x) ;
> temperature:units = "celsius" ;
> temperature:long_name = "air temperature" ;
> temperature:missing_value = "-9999." ;
> temperature:grid_mapping = "Lambert_Conformal" ;
> }
> which the number of  GIS files with the following structure.
> ncols         2015
> nrows         1320
> xllcorner     -2301787.7731349
> yllcorner     108069.7858797
> cellsize      2000
> NODATA_value  -9999
> 
> I would like to map using IDV or WRF Panoply but their regret to map it.
> I do not know how to handle correctly 2d lats and lons so that I can
> map according to it lats and lons.
> Could you please suggest me any documentation where I can read about
> 2d lat lon mapping?
> 
> Thank You.
> 
> --El
> 
> Research Assistant
> Permafrost Laboratory
> tel: 907 474 7184
> Geophysical Institute
> Univ. of Alaska Fairbanks
> 
> 
Elchin,
      This may be the problem of scaling of different x/y coordinate variables, 
could you upload a sample to the following link, so I can try it locally and 
find out the exact problem.

 http://motherlode.ucar.edu/repository/alias/idvupload

Ticket Details
===================
Ticket ID: LIK-107130
Department: Support IDV
Priority: Normal
Status: Open