wind vector

Hi,
Is it possible to draw wind vectors with non uniform grids? I am getting
error like this

ncl 73> plot=gsn_csm_vector_map_ce(wks,u_month(:,:),v_month(:,:),mpres)
(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'
(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'
fatal:VectorFieldInitialize: Insufficient number of elements in vfDataArray,
vfUDataArray or vfVDataArray
fatal:Unable to initialize layer-Can't Create
fatal:Unable to access object with id:-4
fatal:PID #-4 can't be found in NhlSetValues
fatal:PID #-4 can't be found in NhlSetValues
fatal:Unable to access object with id:-4
warning:Unable to add DataItem "(null)" to DataList "vcVectorFieldData"
fatal:CompileDataList:DataList has no valid members
fatal:PID #-4 can't be found in NhlSetValues
warning:sfXArray is not a valid resource in /test_vector at this time
warning:sfYArray is not a valid resource in /test_vector at this time
warning:cnFillOn is not a valid resource in /test_vector at this time
warning:cnFillMode is not a valid resource in /test_vector at this time
warning:cnRasterSmoothingOn is not a valid resource in /test_vector at this
time
fatal:Unable to Destroy (Bad PID#-4)
fatal:Unable to Destroy (Bad PID#-4)

Thanks
Siji

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Received on Wed Oct 04 2006 - 09:09:19 MDT