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"Object Graphics and Vectors" Reloaded [message #40319]

Tue, 03 August 2004 05:31

Ralf Schaa
Messages: 37
Registered: June 2001

Member

G'day group,

a few days ago I had a question of how to plot a spacecraft trajectory
with object graphics. After David's hint to use IDLgrPolyline when
plotting an orbit around a sphere in 3d I was able to do that, and it
looks great.

But now I am stucked with this:
How to plot some vectors (the spacecraft's velocity vector) for some
defined times on the spacecraft trajectory.

I found Rick Towlers 'vector' Object , which he posted 2002 and it
plotted a vector, unfortunately not in the right scale, i tried the
coord_conv but this did not help ...

Of course there is a scaling problem, since the magnitude of the s/c
velocity is much less than the scale of the coordinate system, so i
multplied with a factor that makes sure I'd see the vector ...

So, has someone a clue of how to set the scales right from the

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[Message index]

		"Object Graphics and Vectors" Reloaded By: Ralf Schaa on Tue, 03 August 2004 05:31
		Re: "Object Graphics and Vectors" Reloaded By: Ralf Schaa on Thu, 05 August 2004 02:57
		Re: "Object Graphics and Vectors" Reloaded By: David Fanning on Wed, 04 August 2004 11:06

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