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Map spanning Dateline? [message #14193]

Tue, 02 February 1999 00:00

John Kwiatkowski
Messages: 4
Registered: May 1998

Junior Member

I can't figure out how to draw a map that spans the International
Dateline, i.e., the meridion where longitude is 180 (or -180).

If I go right up to the dateline but not over it, I get a nice map
including Japan:
map_set,/grid, /continent,limit = [0,100,50,180]

However, if I cross the dateline I get some gridlines but no Japan:
map_set,/grid, /continent,limit = [0,100,50,-160]

If I use the limit keyword with 8 elements, either
map_set,/grid, /continent,limit = [50,100,50,-160,0,-160,0,100] or
map_set,/grid, /continent,limit = [0,100,50,100,50,-160,0,-160]
I get a blank window.

Also, I can't seem to get the limit (4 element) keyword to behave.
For example , if I want a map of Florida limit =[20,-88,30,-80]
map_set,limit=[20,-88,30,-80],/cont,/label

I get a map from 20 to 26 lat and -88 to -82 lon. How can I force it
to listen to my limits?

Thanks for any help,
John Kwiatkowski

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[Message index]

		Map spanning Dateline? By: John Kwiatkowski on Tue, 02 February 1999 00:00
		Re: Map spanning Dateline? By: Martin Schultz on Thu, 04 February 1999 00:00
		Re: Map spanning Dateline? By: Charlotte DeMott on Wed, 03 February 1999 00:00
		Re: Map spanning Dateline? By: Martin Schultz on Wed, 03 February 1999 00:00

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