| map_continents [message #11474] |
Fri, 10 April 1998 00:00  |
Harald Frey
Messages: 41
Registered: March 1997
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Member |
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Please try
map_set,70.,270.,limit=[50.,0.,90.,360.],/grid,/isotropic
map_continents
and you see a nice map of the northern hemisphere continents. But now
limit the region
map_set,70.,270.,limit=[50.,180.,90.,360.],/grid,/isotropic
map_continents
and not any of the existing coastlines will appear. Any reason?
Harald Frey
SSL-UC Berkeley
hfrey@ssl.berkeley.edu
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| Re: map_continents [message #32528 is a reply to message #11474] |
Wed, 16 October 2002 14:18  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Elias J. Hunter (hunter@imcs.rutgers.edu) writes:
> I'm attempting to implement some of the IDL object graphics code and I
> was wondering something. I'm looking to get a map of the arctic on a
> shere or a projection. Is there a graphics object (or some interface to
> a graphics obejct) similar to the map_continents procedure for direct
> graphics?
Whoops! No, you have just run into one of the big drawbacks
of object graphics. There is nothing like Map_Continents
in the object graphics world.
If you are looking for an object solution, however,
let me know. My partner and I have recently completed
a complete library of IDL objects that we are using
to build a satellite image processing application. We
use direct graphics image objects and a map object
that can draw map overlays on top of the image. The
entire application, including all of the widgets are
objects. Event handling, image resizing, map display of
map boundaries, grids, etc. is all built into the
system and comes for free.
We are looking for good example programs that we can
build with an eye toward commercializing this system. :-)
Cheers,
David
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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