[ncl-talk] check_for_y_lat_coord

[Rick Brownrigg]

Hi,

I don't have a means to open the .rar file you sent, but it sounds like its
the latitude and longitude variables in the file are what do not have the
units attribute.  From your printFileSummary(tp):

Variable: tp
Type: float
Total Size: 3755712 bytes
            938928 values
Number of Dimensions: 3
Dimensions and sizes:   [time | 1262] x [latitude | 24] x [longitude | 31]
Coordinates:
            time: [1008072..1038336]
            latitude: [41.25..24]
            longitude: [42.75..65.25]

we can see there's already coordinates attached to tp. Perhaps try
verifying that longitude and latitude in your file are lacking units, and
if so, add them to those variables -- I don't think you want to do what you
found on the link you cited.

Hope that helps...
Rick


On Mon, Feb 25, 2019 at 10:47 AM Ehsan Taghizadeh <ehsantaghizadeh at yahoo.com>
wrote:

> Dears,
> I've tried to plot precipitation data from ERA-Interim with the attached
> script.
> However after trying this I encountered the following errors:
>
> Variable: tp
> Type: float
> Total Size: 3755712 bytes
>             938928 values
> Number of Dimensions: 3
> Dimensions and sizes:   [time | 1262] x [latitude | 24] x [longitude | 31]
> Coordinates:
>             time: [1008072..1038336]
>             latitude: [41.25..24]
>             longitude: [42.75..65.25]
> Number Of Attributes: 8
>   _FillValue :  -32767
>   missing_value :       -32767
>   units :       m
>   long_name :   Total precipitation
>   _FillValue_original : -32767
>   missing_value_original :      -32767
>   time :        1008060
>   NCL_tag :     calculate_daily_values: arith=sum
> (0)     ==================================
> (0)     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'
>
> I've found this link (
> https://www.ncl.ucar.edu/Document/Graphics/error_msg.shtml), and based on
> it I tried something like these:
>    tp!0="time"
>    tp!1="lat"
>    tp!2="lon"
>    tp&lat at units="degrees_north"
>    tp&lon at units="degrees_east"
>
> But unfortunately they doesn't help!
> May I ask your help to plot precipitation data from ERA-Interim. I've just
> to say I did a processing to original ERA-Interim data to obtain daily
> precipitation (It has been done before with ncl-talk help). Attached are
> the script and data.
> Any help would be appreciated.
>
>
> Sincerely
> Ehsan
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