Re: Coordinate variables must be the same dimension as their dimension

Hi Dave,

Thanks for your message! The head of the nc file is short:

dimensions:
        nx = 144 ;
        ny = 96 ;
        time = 12 ;
variables:
        double lon(nx) ;
                lon:long_name = "longitude" ;
                lon:units = "degrees_east" ;
        double lat(ny) ;
                lat:long_name = "latitude" ;
                lat:units = "degrees_north" ;
        double gw(ny) ;
                gw:long_name = "gauss weights" ;
        double time(time) ;
                time:long_name = "month" ;
        double SWCF(nx, ny, time) ;
                SWCF:long_name = "Short wave cloud forcing" ;
                SWCF:units = "W/m2" ;
        double LWCF(nx, ny, time) ;
                LWCF:long_name = "Long wave cloud forcing" ;
                LWCF:units = "W/m2" ;

So I want to change the "nx" and "ny" in v_swf_cloud (SWCF) to latitude and
longitude. I don't know if nx and ny influences. Thanks again.

Hongyan

On Thu, Dec 20, 2012 at 7:20 PM, Dave Allured - NOAA Affiliate <
dave.allured@noaa.gov> wrote:

> I think you might have reversed the correct meaning of lat and lon
> subscripts in line 17. What is the result of printVarSummary
> (v_swf_cloud)?
>
> --Dave
>
> On Thu, Dec 20, 2012 at 4:35 PM, H.Dang <danghy@gmail.com> wrote:
> > Hello,
> >
> > I met some problem when defining coordinate variables, the error message
> is:
> >
> > fatal:Coordinate variables must be the same dimension as their dimension
> > fatal:No coordinate variable exists for dimension (V_lat) in variable
> > (v_cloud_yr)
> > fatal:["Execute.c":7556]:Execute: Error occurred at or near line 33 in
> file
> > cloud_cor.ncl
> >
> > My code is:
> >
> > 1 ;*******************************************
> > 2 load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
> > 3 load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
> > 4 begin
> > 5
> > 6 f1 = addfile("cld_int.nc","r")
> > 7 V_swf_cloud = f1->SWCF
> > 8 V_lat = f1->lat
> > 9 V_lon = f1->lon
> > 10 v_swf_cloud = V_swf_cloud(:,:,:)
> > 11 lat_cloud = V_lat(:)
> > 12 lon_cloud = V_lon(:)
> > 13
> > 14 v_cloud_yr = new((/144,96/),double)
> > 15 do ilat = 0,144-1
> > 16 do jlon = 0,96-1
> > 17 v_cloud_yr(ilat,jlon) = avg(v_swf_cloud(ilat,jlon,:))
> > 18 end do ; jlon
> > 19 end do ; ilat
> > 20
> > 21 lat_cloud!0 = "V_lat"
> > 22 lat_cloud&V_lat = lat_cloud
> > 23 lon_cloud!0 = "V_lon"
> > 24 lon_cloud&V_lon = lon_cloud
> > 25 printVarSummary(lat_cloud)
> > 26 printVarSummary(lon_cloud)
> > 27
> > 28 printVarSummary(v_cloud_yr)
> > 29 v_cloud_yr!0 = "V_lat" ;"lat"
> > 30 v_cloud_yr!1 = "V_lon" ;"lon"
> > 31 printVarSummary(v_cloud_yr)
> > 32
> > 33 v_cloud_yr&V_lat= lat_cloud
> > 34 v_cloud_yr&V_lon= lon_cloud
> > 35
> > 36 end
> >
> > Could you please give some suggestion about the line 33? Thanks.
> >
> > Hongyan
> >
> > P.S. Following is all the information on screen:
> >
> > Variable: lat_cloud
> > Type: double
> > Total Size: 768 bytes
> > 96 values
> > Number of Dimensions: 1
> > Dimensions and sizes: [V_lat | 96]
> > Coordinates:
> > V_lat: [ -90..89.99999999999999]
> > Number Of Attributes: 2
> > units : degrees_north
> > long_name : latitude
> >
> > Variable: lon_cloud
> > Type: double
> > Total Size: 1152 bytes
> > 144 values
> > Number of Dimensions: 1
> > Dimensions and sizes: [V_lon | 144]
> > Coordinates:
> > V_lon: [ 0..357.5]
> > Number Of Attributes: 2
> > units : degrees_east
> > long_name : longitude
> >
> > Variable: v_cloud_yr
> > Type: double
> > Total Size: 110592 bytes
> > 13824 values
> > Number of Dimensions: 2
> > Dimensions and sizes: [144] x [96]
> > Coordinates:
> > Number Of Attributes: 1
> > _FillValue : 9.969209968386869e+36
> >
> > Variable: v_cloud_yr
> > Type: double
> > Total Size: 110592 bytes
> > 13824 values
> > Number of Dimensions: 2
> > Dimensions and sizes: [V_lat | 144] x [V_lon | 96]
> > Coordinates:
> > Number Of Attributes: 1
> > _FillValue : 9.969209968386869e+36
> > fatal:Coordinate variables must be the same dimension as their dimension
> > fatal:No coordinate variable exists for dimension (V_lat) in variable
> > (v_cloud_yr)
> > fatal:["Execute.c":7556]:Execute: Error occurred at or near line 33 in
> file
> > cloud_cor.ncl
> >
> >
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> >
>

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Received on Thu Dec 20 18:20:51 2012