[ncl-talk] getting latitude writing on axis wrong

[Debasish Hazra]

Hi Rick,
Thanks for your reply. When I turned
res at tfDoNDCOverlay = False
got the following error

 check_for_y_lat_coord: Warning: Data either does not contain
(0)     a valid latitude coordinate array or doesn't contain one at all.
(0)     A valid latitude coordinate array should have a 'units'
(0)     attribute equal to one of the following values:
(0)         'degrees_north' 'degrees-north' 'degree_north' 'degrees north'
'degrees_N' 'Degrees_north' 'degree_N' 'degreeN' 'degreesN' 'deg north'
(0)     check_for_lon_coord: Warning: Data either does not contain
(0)     a valid longitude coordinate array or doesn't contain one at all.
(0)     A valid longitude coordinate array should have a 'units'
(0)     attribute equal to one of the following values:
(0)         'degrees_east' 'degrees-east' 'degree_east' 'degrees east'
'degrees_E' 'Degrees_east' 'degree_E' 'degreeE' 'degreesE' 'deg east'
warning:ContourPlotDraw: out of range coordinates encountered; standard
AreaFill rendering method may be unreliable;
 consider setting the resource trGridType to "TriangularMesh" if
coordinates contain missing values

Debasish

On Thu, Jun 29, 2023 at 2:13 PM Rick Brownrigg <brownrig at ucar.edu> wrote:

> Hi Debasish,
>
> I'm a little confused by this line:
>
>     res at tfDoNDCOverlay = True
>
> Should that be False?  If that doesn't help, if you can send me the
> dataset, I'll try to figure out what is going on.
>
> Rick
>
>
> On Thu, Jun 29, 2023 at 12:01 PM Debasish Hazra via ncl-talk <
> ncl-talk at mailman.ucar.edu> wrote:
>
>> Hi,
>> I am trying to plot grib2 file with Lambert projection and getting wrong
>> latitude markers (0-25 N) on the y-axis. Attached is figure and code and
>> also highlighting attributes from the file.
>>
>>  file global attributes:
>>    dimensions:
>>       ygrid_0 = 3268
>>       xgrid_0 = 5200
>>
>>       float gridrot_0 ( ygrid_0, xgrid_0 )
>>          long_name :    vector rotation angle
>>          GridType :     Polar Sterographic Projection (North or South)
>>          units :        radians
>>          formula_u :    Uearth = sin(rot)*Vgrid + cos(rot)*Ugrid
>>          formula_v :    Vearth = cos(rot)*Vgrid - sin(rot)*Ugrid
>>          note1 :        u and v components of vector quantities are
>> resolved relative to grid
>>          note2 :        apply formulas to derive u and v components
>> relative to earth
>>
>>       float gridlat_0 ( ygrid_0, xgrid_0 )
>>          corners :      ( -4, -5.706548, 18.53903, 22.48842 )
>>          long_name :    latitude
>>          grid_type :    Polar Sterographic Projection (North or South)
>>          units :        degrees_north
>>          Dy :   3.17
>>          Dx :   3.17
>>          Lov :  245
>>          Lo1 :  206.5
>>          La1 :  -4
>>
>>       float gridlon_0 ( ygrid_0, xgrid_0 )
>>          corners :      ( -153.5, -74.4254, -22.46207, 152.2681 )
>>          long_name :    longitude
>>          grid_type :    Polar Sterographic Projection (North or South)
>>          units :        degrees_east
>>          Dy :   3.17
>>          Dx :   3.17
>>          Lov :  245
>>          Lo1 :  206.5
>>          La1 :  -4
>>
>> Any help on this is appreciated.
>> Thanks
>> Deba
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