Re: No coordinate variables

The problem is that "so2" has no lat/lon data associated with it, and you are trying to put it over a map.

Since your data doesn't have lat/lon one-dimensional coordinate arrays, then you will need to read the latitude and longitude values off a file and set the sfXArray/sfYArray resources to these arrays.

If your lat/lon arrays are two-dimensional, then your code might look like this:

  so2@lat2d = f->lat ; or whatever the lat/lon arrays are called on the file
  so2@lon2d = f->lon

I'm not sure why your file has "phony_dim_x" as the dimension names. This is not very useful. Also, if your data is indeed supposed to be over a map, the usual convention is that your data would have a "coordinates" attribute that indicate the name of the lat/lon arrays on the file. I don't see that here, so I'm not sure whether your file contains lat/lon data. You will need to do an "ncl_filedump" on the file to see if there's anything resembling lat/lon data.

   ncl_filedump 129he.nc

--Mary

On Jul 11, 2013, at 8:34 PM, Guilherme Martins <jgmsantos@gmail.com> wrote:

> Hi all,
>
> When I try run my script appear the error below. There is a log my netcdf file using ncl_filedump in attach.
>
> Copyright (C) 1995-2013 - All Rights Reserved
> University Corporation for Atmospheric Research
> NCAR Command Language Version 6.1.2
> The use of this software is governed by a License Agreement.
> See http://www.ncl.ucar.edu/ for more details.
>
> Variable: so2
> Type: float
> Total Size: 132710400 bytes
> 33177600 values
> Number of Dimensions: 3
> Dimensions and sizes: [phony_dim_0 | 8] x [phony_dim_1 | 1440] x [phony_dim_2 | 2880]
> Coordinates:
> Number Of Attributes: 8
> _FillValue : -1.267651e+30
> Units : D.U.
> Title : Vertical Column Amount SO2 (PBL)
> UniqueFieldDefinition : OMI-Specific
> ScaleFactor : 1
> Offset : 0
> ValidRange : ( -10, 2000 )
> MissingValue : -1.267651e+30
> (0) check_for_y_lat_coord: Warning: Data either does not contain a valid latitude coordinate array or doesn't contain one at all.
> (0) A valid latitude coordinate array should have a 'units' 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 a valid longitude coordinate array or doesn't contain one at all.
> (0) A valid longitude coordinate array should have a 'units' 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 try add the lines
>
>
> x&lat@units="degrees_north"
> x&lon@units="degrees_east"
> Like show the website, but the error continue.
>
> Thanks,
>
> Guilherme.
>
> --
> Guilherme Martins
> http://guilhermemartins.hd1.com.br/
>
>
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Received on Fri Jul 12 10:49:58 2013