Dear Sylvia,
The domain I want in my data is from 40West to 20East, which correspond to
points from :
320 to 360
and
360 (i.e 0) to 20
The problem is that my data longitude is not monotonic. So I can't just
extract the domain I want. I suppose I could extract both arrays
y1 = x({320:360},{minLat:maxLat}) and
y2 = x({0:20},{minLat:maxLat}) and then concatenate y1 and y2 into a
variable y. Only thing is that I am not sure how to concatenate y1 and y2.
Regards, Marjolaine.
-----Original Message-----
From: Sylvia Murphy [mailto:murphys AT cgd.ucar.edu]
Sent: Monday, November 29, 2004 6:03 PM
To: Marjolaine Rouault
Cc: ncl-talk AT ucar.edu
Subject: Re: coordinate subscripting
M,
you certainly can use coordinate subscripting. This method is dependent
upon what your coordinates look like. if your coordinates go from -180 to
+180 then you need to use those values while coordinate subscripting. if,
as in your case, they go from 0 to 360 you need to use those values.
for example
y = x({-20:20},{270:360})
in your case you need to mentally convert the region you want into
360-mode and then subscript.
sylvia
On Mon, 29 Nov 2004, Marjolaine Rouault wrote:
> Hi,
>
> I am reading some data which longitude is not "ordered" in the usual way.
>
> Longitude points from 0 east to 180 east have a longitude which increases
from 0 to 180.
> Longitude points from 180 west to 0 west have a longitude value which
increases from 181 to 360.
>
> I am trying to extract a domain between 40West and 20 East.Is it possible
to do it with coordinate subscripting? What would you suggest is the best
way to extract my domain?
>
> Many thanks, Marjolaine.
>
>
>
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> ncl-talk AT ucar.edu
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>
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