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Re: How to plot the magnetic field vector along the trajectory [message #59267 is a reply to message #59133]

Wed, 12 March 2008 10:00

mankoff
Messages: 131
Registered: March 2004

Senior Member

On Mar 12, 11:09 am, Lasse Clausen <la...@lbnc.de> wrote:
> On 12 Mar, 15:45, David Fanning <n...@dfanning.com> wrote:
>
>
>
>> Lasse Clausen writes:
>>> We are not throwing away anything, we are merely projecting into the
>>> XY plane... ;-) You have to project somewhere as the computer screen
>>> is not capable of displaying 3D - nor is paper, incidentally. And the
>>> usual way to do this kind of thing is to provide three plots, one in
>>> the XY plane, one in XZ and one in YZ. You then have to assemble the
>>> 3D picture in your head.
>
>> Or, you could envision an object graphics solution with
>> an "earth" and "satellite" revolving around it, casting
>> a shadow trajectory onto the earth with a magnetic vector
>> rotating about in the plane of the satellite.
>
>> All I'm saying is, the question lacked enough detail,
>> for whatever good reason, to know how to form a sensible
>> answer. And that when you ask better questions, you get--
>> generally--better answers.
>
>> I agree that this question was borderline for such a
>> response. Even I could tell English was not the first
>> language. But coming, as it did, at the end of a long
>> day and after several seriously bad questions from the
>> past week, I just thought a reminder might be useful. :-)
>
>> Cheers,
>
>> David
>> --
>> David Fanning, Ph.D.
>> Fanning Software Consulting, Inc.
>> Coyote's Guide to IDL Programming:http://www.dfanning.com/
>> Sepore ma de ni thui. ("Perhaps thou speakest truth.")
>
> As I said earlier, the question did not lack detail for me because I
> have seen lots of these kind of plots before, so I was pretty sure
> what was asked for. But I can also see that it would be confusing if I
> hadn't seen these plots before.
>
> More importantly, IDL can do that sort of thing? With shadows and all?
> Object graphics I hear you say... Mmmm, so far I have ignored
> everything involving object graphics. Well, maybe one fine day.
>
> Cheers
> Lasse Clausen

Play around with "idldemo". There is a satellite orbiting the earth (I
think with Ground Track). The earth is rotating. Clouds are rotating
separately from Earth, etc.

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[Message index]

		How to plot the magnetic field vector along the trajectory By: duxiyu@gmail.com on Tue, 11 March 2008 20:05
		Re: How to plot the magnetic field vector along the trajectory By: mankoff on Thu, 13 March 2008 06:33
		Re: How to plot the magnetic field vector along the trajectory By: duxiyu@gmail.com on Thu, 13 March 2008 05:42
		Re: How to plot the magnetic field vector along the trajectory By: duxiyu@gmail.com on Thu, 13 March 2008 05:40
		Re: How to plot the magnetic field vector along the trajectory By: manodeep@gmail.com on Wed, 12 March 2008 14:30
		Re: How to plot the magnetic field vector along the trajectory By: mankoff on Wed, 12 March 2008 10:00
		Re: How to plot the magnetic field vector along the trajectory By: jdu on Wed, 12 March 2008 08:35
		Re: How to plot the magnetic field vector along the trajectory By: lasse on Wed, 12 March 2008 08:09
		Re: How to plot the magnetic field vector along the trajectory By: David Fanning on Wed, 12 March 2008 07:45

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