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getting plot projection in 3d

Asked by Usman Ali

Usman Ali (view profile)

on 30 Jan 2013

hi, i was searching for getting projection of plots in 3d view, i found a nice shadowplot function for this purpose i am trying to use it for 3d vectors after plot3(..) but not successful. it only works with mesh/surf plots. help

1 Comment

Jan Simon

Jan Simon (view profile)

on 30 Jan 2013

Please mention any details about the "nice shadowplot function" you have found. We cannot guess which function this is.

Usman  Ali

Usman Ali (view profile)

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2 Answers

Answer by José-Luis

José-Luis (view profile)

on 30 Jan 2013
Edited by José-Luis

José-Luis (view profile)

on 30 Jan 2013
aH = axes;
your_data = randn(1000,3);
oneMat = ones(size(your_data,1),1);
plot3(your_data(:,1),your_data(:,2),your_data(:,3),'b.');
hold on
xL = get(aH,'XLim');
yL = get(aH,'XLim');
zL = get(aH,'XLim');
plot3(oneMat .* xL(2), your_data(:,2), your_data(:,3), 'k.');
plot3(your_data(:,1), oneMat .* yL(2), your_data(:,3), 'k.');
plot3(your_data(:,1), your_data(:,2), oneMat .* zL(1), 'k.');
grid on

Please accept an answer if it helps you.

5 Comments

José-Luis

José-Luis (view profile)

on 31 Jan 2013

I don't understand, what's wrong with the way I plotted it? Could you please show an example of what you actually want?

Usman Ali

Usman Ali (view profile)

on 6 Feb 2013

let's say i have to plot a sin and cos in complex plan with their shadows on the walls t = 0:pi/50:10*pi; plot3(t,cos(t),sin(t)); if i apply shadowplot x or shadowplot y nothing happens...

José-Luis

José-Luis (view profile)

on 6 Feb 2013

That's because you are talking about points. The "shadow" of a point is a point, the "shadow" of a surface is a surface.

José-Luis

José-Luis (view profile)

Answer by Jan Simon

Jan Simon (view profile)

on 30 Jan 2013

What about using surf instead of plot3 when the function you have found works for surf, but not for plot3? There are a lot of examples for surface plots in the FileExchange, search for e.g. "arrow".

2 Comments

Usman Ali

Usman Ali (view profile)

on 30 Jan 2013

does surf works for vectors :/

Jan Simon

Jan Simon (view profile)

on 30 Jan 2013

Yes. It depends on how you define the inputs.

Jan Simon

Jan Simon (view profile)

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