Dear Nancy,
You can do this one of two ways.
One way is to do it by masking out the areas in your map that you are
not interested in.
The other way, is if you have a shapefile that contains the outline
you're interested in, then you can use the "gc_inout" function to set
your data to all missing values wherever it falls outside the boundary.
To see some examples of masking, see examples 4 and 8 at:
http://www.ncl.ucar.edu/Applications/mask.shtml
For a "gc_inout" example, see example 9 on the same page.
I think that the first method is slightly easier, unless you need a
very specific boundary that NCL doesn't have in its map database.
What I've done in the attached example script is draw the land and
ocean in white, and then left China "transparent" so you can see the
contours.
--Mary
On Nov 21, 2010, at 11:58 PM, tzp2005011042 wrote:
> Dear all,
> I want to draw precipitation only in Chinese region.How can
> I move off the contour lines out of the Chinese boundary?
> Looking forward to your help!Thank you very much!
> Best wishes!
> sincerely yours,
> nancy
>
>
> 网易163/126邮箱百分百兼容iphone ipad邮件收发
> _______________________________________________
> ncl-talk mailing list
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk
Received on Tue Nov 23 09:27:38 2010
This archive was generated by hypermail 2.1.8 : Tue Nov 30 2010 - 08:26:08 MST