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MAP_CONTINENTS procedure [message #7459]

Tue, 19 November 1996 00:00

Wolfgang Knorr
Messages: 1
Registered: November 1996

Junior Member

Hi,

supposedly, someone has already run into this problem, and possibly
it had already been discussed here, but I'd still like to post the
following question:

I want to display a global data on a map with the date line
in the center, using Mollweide's projection, and continental
boundaries. So I do:

map_set, /moll, /cont, /hor, 0, 180

The result is a little unsatisfactory, since IDL (at least my
Mac Version 4.0.1 does) connects lines accross the Greenwich
meridian right through my display. The best solution I could find:

map_set, /moll, /cont, /hor, 0, 180, limit = [-90, 0.5, 90, 359.5]

I do not find this very elegant, because I might miss out some data
points. Doing

map_set, /moll, /cont, /hor, 0, 180, limit = [-90, 0.1, 90, 359.9]

then has some problems similar to the first version.
My question: Does anyone know how to get around this problem?

Thanks a lot.

Wolfgang Knorr
Max-Planck-Institut fuer Meteorologie, Hamburg, GERMANY

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[Message index]

		MAP_CONTINENTS procedure By: Wolfgang Knorr on Tue, 19 November 1996 00:00
		Re: MAP_CONTINENTS procedure By: Andy Loughe on Wed, 20 November 1996 00:00

Previous Topic:	Re: Phase Unwrapping Algorithms?
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