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Re: map projections webinar [message #78047 is a reply to message #77920]

Wed, 19 October 2011 12:00

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

David Fanning writes:

> And I put an attempt at a Function Graphics file
> here:
>
> http://www.idlcoyote.com/misc/ng_geotiff_image.pro
>
> I cannot size the image appropriately, or even leave
> room in the window for the title. If someone could
> make it work, I would be *extremely* grateful. :-)

Note to self: No more programming at 3AM!!

I just turned my attention back to this project, and
realized that the ng_geotiff_image.pro program I put
up there last night (early this morning!) wasn't
working. I've replaced it with one that is:

http://www.idlcoyote.com/misc/ng_geotiff_image.pro

Well, "working" as in compiles and displays something.

It doesn't work in that I can't appear to "position"
a map object in the graphics window. In other words,
this code appears to ignore the POSITION keyword:

m = MAP('Albers Equal Area', $
ELLIPSOID='WGS 84', $ ; WGS84
CENTER_LATITUDE=geotag.PROJNATORIGINLATGEOKEY, $
CENTER_LONGITUDE=geotag.PROJNATORIGINLONGGEOKEY, $
STANDARD_PAR1=geotag.PROJSTDPARALLEL1GEOKEY, $
STANDARD_PAR2=geotag.PROJSTDPARALLEL2GEOKEY, $
XRANGE=xrange, YRANGE=yrange, $
POSITION=[0.025, 0.025, 0.975, 0.85])

Well, it ignores the XRANGE and YRANGE keywords, too,
but this is an error I know about. I fix that error
by doing this:

m.xrange = xrange
m.yrange = yrange

But, when I try the same technique with the ignored
POSITION keyword:

m.position =[0.025, 0.025, 0.975, 0.85]

I am given this error:

% MAPPROJECTION: Unknown property: POSITION

There are other problems as well, but if I could solve
this one I would be moving forward.

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		map projections webinar By: Mark Piper on Tue, 18 October 2011 08:00
		Re: map projections webinar By: David Fanning on Thu, 20 October 2011 19:19
		Re: map projections webinar By: David Fanning on Thu, 20 October 2011 12:57
		Re: map projections webinar By: David Fanning on Wed, 19 October 2011 12:00
		Re: map projections webinar By: d.poreh on Wed, 19 October 2011 07:01
		Re: map projections webinar By: David Fanning on Wed, 19 October 2011 07:00
		Re: map projections webinar By: d.poreh on Wed, 19 October 2011 05:11
		Re: map projections webinar By: David Fanning on Wed, 19 October 2011 01:38
		Re: map projections webinar By: David Fanning on Wed, 19 October 2011 00:33

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