3D matrix from 3D scatter points
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David
am 17 Mär. 2015
Bearbeitet: the cyclist
am 17 Mär. 2015
Hi everyone,
I have tracked moving particles in a 3D space by storing their spatial coordinates positions in vectors. I.e. for a given time I have:
particle_x; particle_y; patricle_z;
specifying the x,y and z coordinates of each tracked particle/point. I can easily visualize these using scatter3 in Matlab, but from this, I would like to make 2D cuts and visualize the spread of points coinciding with certain planes. My idea was to create a 3D matrix of the whole 3D space and simply fill in a value ('1') where a particle is identified. However, I'm not really sure how to do this in a good way...
Since scatter3 can visualize the points in 3D, there has to be some sort of 3D matrix saved in the background, or? Or does anyone have a good idea of how I could do this? Any advice would be very much appreciated.
Thanks
/David
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the cyclist
am 17 Mär. 2015
Bearbeitet: the cyclist
am 17 Mär. 2015
The conceptual method that springs to mind is to calculate the distance from each of your points to the plane you want, and plot the points that are within some tolerance of zero. (You probably don't want to require exactly zero distance, because of floating point arithmetic limitations.)
Search keywords like determine , distance , point , plane and the formula is easy to find.
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the cyclist
am 17 Mär. 2015
This old post from the forums seems like it might help you.
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