Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at intermountainmail.org
(801) 408-8111
> -----Original Message-----
> From: r-sig-geo-bounces at stat.math.ethz.ch
> [mailto:r-sig-geo-bounces at stat.math.ethz.ch] On Behalf Of Anne Hertel
> Sent: Thursday, January 19, 2006 10:25 AM
> To: r-sig-geo at stat.math.ethz.ch
> Subject: [R-sig-Geo] Maps across the dateline
>
> Hello,
>
> I'm trying to plot some data for the Pacific Ocean and want
> to get a map onto my plot as well. I'm using the function
> 'map()' from library(maps). However, I cannot get it to plot
> anything across the dateline since it requires that
> longitudes between 180 and 360 degrees east to be written as
> negative degrees east of Greenwich (e.g. -180 to 0 degrees
> east). The longitudes I want to plot are 135 to 255 degrees
> east but the function map() wants that to be written 135 to
> 180 degrees east and -180 to -105 degrees east, so I would
> have to divide the grid up in two. But even if I do that I
> can't plot it together because -180 doesn't come after 180.
>
> Does anyone have a way to plot something across the dateline?
> I only want a map of the Pacific, not the rest of the world.
>
> Thanks,
> Anne Hertel
>
>
> ------------------------------------------------------------
> Anne M. K. Hertel
> Grad. Student & Research Assistant
> Department of Atmospheric Sciences
> University of Illinois at Urbana-Champaign Annex II, room 204
> Phone: (217) 333 6296
>
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