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Re: displaying things above the earth in a map projection [message #32220]

Wed, 25 September 2002 10:47

John R. Iverson
Messages: 6
Registered: September 2002

Junior Member

First of all, thanks!

Second, I have 2 questions:

1. it doesn't seem like this works while preserving the orthographic
projection. Is there any way I can use the transformation set up by the
map_set command to throw my data into space?

2. I guess I just don't understand why this command doesn't do what I
think it should? (draw a line from the map to the symbol you brought up
earlier):

plots, [45, 45], [45, 45], [0, 0.25], /t3d

I really appreciate the help given to this IDL newbie!

-Rob

David Fanning wrote:
>
> John R. Iverson (jrivers@sandia.gov) writes:
>
>> Is there a way to plot things above the earth when using any kind of map
>> projection?
>>
>> I tried plots, [-106], [35], [1.5], psym=5 but it always shows up on the
>> surface. I tried adding a /t3d to that command.
>>
>> Is there any way to do this? I think I'd prefer to stick with direct
>> graphics...
>
> scale3, xrange=[-180, 180], yrange=[-90, 90], zrange=[0,1]
> map_set, /cylindrical, /t3d, /grid, /continent
> plots, 45, 45, 0.25, /t3d, psym=4, symsize=5.0
>
> 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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[Message index]

		Re: displaying things above the earth in a map projection By: John R. Iverson on Wed, 25 September 2002 10:47
		Re: displaying things above the earth in a map projection By: Andy Loughe on Tue, 24 September 2002 14:40
		Re: displaying things above the earth in a map projection By: David Fanning on Tue, 24 September 2002 13:16
		Re: displaying things above the earth in a map projection By: David Fanning on Wed, 25 September 2002 20:16
		Re: displaying things above the earth in a map projection By: James Kuyper on Wed, 25 September 2002 11:38

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