[ferret_users] Re: Creating a grid from lat long variables

["kevin.lemorzadec" <kevin.lemorzadec@xxxxxx>]

Thanks for your suggestion but I am still having some troubles.

I have attached some images of the result that I get, the original landcover data that I want and the variable lon and lat that the new grid should be created from.

The original grid GPV1 is evenly spaced but the new grid created form xax and yax won't have data everywhere.

I also tried as suggested to specify k=1,
LET LANDCOVERd = scat2gridgauss_xy(lon[k=1],lat[k=1],LANDCOVER[k=1],x[gx=xax], y[gy=yax], 1,1,1,0)
but it gives me the same results.

Any other suggestions?

Kevin


On Wed, Nov 21, 2012 at 6:02 PM, kevin.lemorzadec <kevin.lemorzadec@xxxxxx> wrote:

Dear Users,
I have a set of data containing the latitude, longitude and a mask of the region

 LAT      Latitude                         1:301     1:561     ...       1:1
 LON     Longitude                       1:301     1:561     ...       1:1
 LANDCOVER                            1:301     1:561     ...       1:1

The grid of these data is in meter :
    GRID GPV1
 name       axis              # pts   start                end
 X1        X (meters)         301 r   -800000              700000
 Y1        Y (meters)         561 r   -3400000             -600000

I want to create a new grid in degree using the lat,long data.
I tried to use the scat2gridgauss_xy as below to get the data on a lat long grid (created from the min and max of my lat lon data) but the only result that I can get doing that are 0 in part of the grid.

DEFINE AXIS/X=-92.13:10.399:0.1 xax
DEFINE AXIS/Y=58.629:84.482:0.1 yax
LET LANDCOVERd = scat2gridgauss_xy(lon[d=1],lat[d=1],LANDCOVER[d=1],x[gx=xax], y[gy=yax], 1,1,1,0)

Any suggestion?

--
Kevin

-- 
Kevin Le Morzadec - Ph.D. candidate
                                Dept of Physics and Physical Oceanography,
                                Memorial University of Newfoundland, Canada
                                Tel 709-864-8654

Attachment: lon.gif
Description: GIF image

Attachment: lat.gif
Description: GIF image

Attachment: scat2grid.gif
Description: GIF image

Attachment: landcover.gif
Description: GIF image