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Re: how to use the map_set in this situation ??? [message #14832]

Wed, 07 April 1999 00:00

Vapuser
Messages: 63
Registered: November 1998

Member

"Jason Li" <jyli@earthlink.net> writes:

> Hi,
>
> The longitude convention in IDL is from -180 W to +180 E. If I just want to
> plot a region +/- 10 degree longitude box around 180 meridian, how do I set
> the mapping properly?
>
> I don't want the bigger portion of the earth (-170W all the way around 0
> degree and then 170E), I just want the smaller portion (20 degree slice) of
> the earth.
>
> thanks
>
> JyL

Map_set works in either convention. I use east longitude all the time.

Try using the 'longitude center' parameter and specify longitude in
range of [0,360], thus

map_set,0,180,limit=[latmin,170,latmax,190]

William Daffer

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