Re: Data from a Lambert native grid reprojected on a Mercator grid.

Hi Caroline,

You don't need to regrid the data at all in order to plot it in a
different projection. If you have the lat2d & lon2d arrays set,
NCL can plot the data as-is using any projection you like.

If you do something like this, I believe it will work:

load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"

  a = addfile(v_file,"r")
  t = a->TMP_GDS3_HTGL_10(:,:)
  t@lat2d= a->g3_lat_0
  t@lon2d= a->g3_lon_1

  wks =gsn_open_wks("ps","tempe")

  res = True
  res@gsnAddCyclic = False
  res@mpProjection = "mercator"

  plot=gsn_csm_contour_map(wks,tt,res)

end

Cheers,

--Seth

----
Seth McGinnis
mcginnis@ucar.edu
Associate Scientist
ISSE / IMAGe / NCAR
----
>Date: Fri, 29 Jan 2010 10:22:06 +0100
>From: Caroline Serraud <cs@meteoconsult.fr>
>Subject: Data from a Lambert native grid reprojected on a
>	Mercator grid.
>To: ncl-talk@ucar.edu
>Message-ID: <4B62A8BE.2090706@meteoconsult.fr>
>Content-Type: text/plain; charset="iso-8859-1"
>
>Hi everyone,
>
>I am trying to plot data from a .nc file with a Lambert native grid, but 
>in a Mercator projection.
>I can't find any working solution for several days: I try first with 
>rcrm2rgrid function, but when I launch my ncl script, nothing happens 
>and ncl seems to run for hours..
>
>
>Am I doing something wrong?
>Any remark would be very helpful!!
>
>Thanks in advance for your time
>Caroline
>
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