ETOP2 Across Longitude 180 (140E to 140W)

[bernd.becker at METOFFICE.GOV.UK]

Try removing 1 from xdef number of points.

if your values at x=1 and at x=xdef are identical, your data is
not written out for wraparound.


On Thu, 2006-11-30 at 11:34 -0500, Joe Covert wrote:
> I ran into this problem some time ago and could never find a solution.
>
> I'm trying to contour bathymetry using ETOPO2 across 180 degrees.
> Maintaining a 2:1 ratio of lat to lon typically you would:
>
> set lat 10 40
> set lon 140 220
>
> This works fine with GTOPO30 and terrain (although you have to do a
> little work around when crossing the equator).  It does not work however
> with ETOPO2.  You get contours from 140 to 180 and then blank from -180
> -140.
>
> I've tried various combinations and had hoped to avoid having to
> manipulate the graphics page/virtual page to get it to work.  If that's
> the only solution and someone has already done it I'd appreciate the
> script for it.  Otherwise I'll see if I can work something out and pass
> it along.
>
> Any help would be appreciated.
>
> Thanks
>
> Joe
>
>
--
Bernd Becker   The Monthly Outlook
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