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From: Conor Walsh on 18 Mar 2010 15:21
hi All

I am wondering if there is an efficient way to plot a coordinate axes (x,y, z unit vectors from common point) at a point in a 3d plot.

I am looking to plot the position and orientation of multiple coordinate systems on a single plot.

Thank you for your help

Conor
From: Walter Roberson on 18 Mar 2010 15:40
Conor Walsh wrote:

> I am wondering if there is an efficient way to plot a coordinate axes
> (x,y, z unit vectors from common point) at a point in a 3d plot.

The vectors themselves:

plot3(x0+[0, 1, nan, 0, 0, nan, 0, 0],
y0+[0, 0, nan, 0, 1, nan, 0, 0],
z0+[0, 0, nan, 0, 0, nan, 0, 1] )

The annotations:

text([x0+1, x0, x0], [y0, y0+1, y0], [z0, z0, z0+1], ['+X';'+Y';'+Z']);


> I am looking to plot the position and orientation of multiple
> coordinate systems on a single plot.

The above could be adapted, by using bsxfun, to do all the lines at once for a
given list of [X,Y,Z] origins. Probably could do all the annotations at once
as well by tossing in a repmat() .
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