Re: region box

[Andy Chiodi <chiodi@xxxxxxxxxxxxxxxxxxxx>]

Hi Wendy,

The 'plot' command can be used to add an area box to a map.
If you define variables, lets say 'lat' and 'lon' such that they contain 
the latitudes and longitudes that make up the corners of your box, then 
somthing like

plot/ov/vs/line=7/nolabel/i=1:5 lon,lat

will draw the box.

Although there are other ways to define variables, I've often found that 
storing the latitudes and longitudes in a text file, and reading them in, 
using the command

file/var="lat,lon" box

is a convienient method when you're likely to draw the same box a number 
of times.  In this case 'box' would be a text file that 
contained only a column of latitudes and longitudes, something like 
this;

-28.0   224.0
-23.0   224.0
-23.0   234.0
-28.0   234.0
-28.0   224.0



I hope this helps,

	Andy




On Thu, 9 Sep 2004, Wendy Wang wrote:

> Hi ferret-users,
>
> Is there a simple way to put/add an area box on a map?
> I have a clim. SST for the Pacific. I'd like to put a box that
> shows Nino3 region.
>
> Thanks,
> Wendy Wang
--
Andy Chiodi

School of Oceanography
University of Washington
Seattle, WA

chiodi@ocean.washington.edu
(206) 526-6758