Function to find points in pointcloud

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Hi all
My issue is that i have a big pointbloud in XYZ coord. Ive got 2 XYZ points, where i need to find all the points in the cloud, which is between this two given points. Does anyone know which kind of funktion i need to use for this? i have tried the find-function, but couldent get it to work.
thanks in advance.
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John D'Errico
John D'Errico 2014-12-20
As Image points out, your question lacks definition. Find did not work, because it is not designed to do what you did not explain well.
In a 3-dimensional point cloud, what does it mean to be "between" two points? I can certainly think of several ways to define between in that context, and all of them are potentially wrong by your definition.
As well, I often find that when someone does not explain something like this clearly, it often means they have not really thought out what they wanted to do. And if you don't know what you want, how can we know?

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Image Analyst
Image Analyst 2014-12-20
So you have a scattering of points in 3D space, specified by an N by 3 array of [x,y,z] coordinates, right? Now, exactly what does it mean if a point is "between" two arbitrary points somewhere in 3D space? Do you want to connect those two points with a vector, then consider two planes (one at each point) that is normal to the vector, and then any points that are between the two planes are "in between" the points? Or do you have another definition?
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Malte
Malte 2014-12-22
Thank you very much. i will try it out then i get to the university and reply to you.
Malte
Malte 2014-12-22
I discoverd a error in my cloud, but it looks like your function works. Thanks...

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