[R] HIRHAM netcdf files

[Roy Mendelssohn]

Hi Ana:
On Jul 29, 2011, at 8:03 AM, Ana wrote:
> netcdf precip.DMI.HS1 {
> dimensions:
> 	rlat = 84 ;
> 	rlon = 90 ;
> 	time = 10800 ;
> 	time_bnds = 2 ;
> variables:
> 	float lat(rlat, rlon) ;
> 		lat:standard_name = "latitude" ;
> 		lat:long_name = "latitude" ;
> 		lat:units = "degrees_north" ;
> 	float lon(rlat, rlon) ;
> 		lon:standard_name = "longitude" ;
> 		lon:long_name = "longitude" ;
> 		lon:units = "degrees_east" ;
> 	float rlat(rlat) ;
> 		rlat:axis = "Y" ;
> 		rlat:standard_name = "rotated_latitude" ;
> 		rlat:long_name = "rotated latitude" ;
> 		rlat:units = "degrees" ;
> 	float rlon(rlon) ;
> 		rlon:axis = "X" ;
> 		rlon:standard_name = "rotated_longitude" ;
> 		rlon:long_name = "rotated longitude" ;
> 		rlon:units = "degrees" ;
> 	char rotated_pole ;
> 		rotated_pole:grid_mapping_name = "rotated_latitude_longitude" ;
> 		rotated_pole:grid_north_pole_latitude = 37.f ;
> 		rotated_pole:grid_north_pole_longitude = -153.f ;
> 

Unless I am totally misreading this, rlat, rlon are the coordinates in the projection, lat(rlat, rlon) and lon(rlat,rlon) are the actual lat, lon at those points.  In R, you an use ncdf4  (or the older ncdf) to read in those values.

-Roy

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Roy Mendelssohn
Supervisory Operations Research Analyst
NOAA/NMFS
Environmental Research Division
Southwest Fisheries Science Center
1352 Lighthouse Avenue
Pacific Grove, CA 93950-2097

e-mail: Roy.Mendelssohn at noaa.gov (Note new e-mail address)
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