Help setting the Lambert Azimuthal Equal Area grid
Added by Anatolii Anisimov about 4 years ago
Hi everyone,
I am stuck with trying to set the Lambert Azimuthal Equal Area grid parameters in a correct way. Could you please take a look?
Most needed grid parameters are specified in the initial file attributes. I try to set it like this, but I'm not sure how to specify the x and y steps, as it is varying (or maybe it's not the proper way for this type of projection at all:
gridtype = projection
gridsize = 2250000
xsize = 1500
ysize = 1500
xname = x
xunits ="km"
yname = y
yunits = "km"
xfirst = -400
xinc = ?
yfirst = -500
yinc = ?
uvRelativeToGrid = 1
grid_mapping = Lambert_Azimuthal
grid_mapping_name = lambert_azimuthal_equal_area
longitude_of_central_meridian = 42.8095
latitude_of_projection_origin = 18.3026
false_easting = 0
false_northing = 0
earth_radius = 6367470.
longitudeOfFirstGridPointInDegrees = 39.1134
latitudeOfFirstGridPointInDegrees = 13.7775
| radar_test_file.nc (34.3 MB) radar_test_file.nc | sample_file |
Replies (1)
RE: Help setting the Lambert Azimuthal Equal Area grid - Added by Anatolii Anisimov about 4 years ago
I was able to resolve it myself. Here's the correct grid definition:
gridtype = projection
gridsize = 2250000
xsize = 1500
ysize = 1500
xname = x
xunits ="km"
yname = y
yunits = "km"
xfirst = -400
xinc = 0.75
yfirst = -500
yinc = 0.75
uvRelativeToGrid = 1
grid_mapping = Lambert_Azimuthal
grid_mapping_name = lambert_azimuthal_equal_area
longitude_of_projection_origin = 42.8095
latitude_of_projection_origin = 18.3026
false_easting = 0
false_northing = 0
earth_radius = 6367470.
longitudeOfFirstGridPointInDegrees = 39.1134
latitudeOfFirstGridPointInDegrees = 13.7775