Re: How to plot grid lines for the NARR data?

On Wed, 28 Mar 2007, Haibin Li wrote:

> Hello there,
> Thanks to the sample code provided on the UCAR NARR data website, I
> was able to plot the NARR data in the original Lambert Conformal map
> projection. But I would like to further plot/delineate the grid lines
> (277*349 ) for the Lambert Conformal projection of NARR data. I just
> wonder whether there is a way to do it and how. The reason I want to
> do this is that I have some station data and I want to identify those
> grids corresponding to known (lat,lon) stations and extract those grid
> values.
> Thanks.
>
> Regards,
> Haibin

Dear Haibin,

The way to do this is by using gsn_add_polyline to add lat/lon polylines
to your map before you draw it. Please see example 6 at:

   http://www.ncl.ucar.edu/Applications/polyg.shtml

This should work for any map projection.

--Mary

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Received on Wed Mar 28 2007 - 16:15:00 MDT