# Creating two points in matlab

## Homework Statement

i had some problem with matlab of how to create two points of random positions and adding another few random points

## Homework Equations

how to create the points, set a point as the centre, make the iteration for one point to rotate the centre and also the other iterations for the rest of the points to rotate each other

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Simon Bridge
Homework Helper
To set random points use the rand or randn functions.
The other operations are translation and rotations - there are matrixes for those.

i.e. 5 3D points at random would be X=rand(3,5) - each column being the coordinates of a point.
The first data point, for eg, is x1=X(:,1)

For a translation T, just do X=T*X
For a rotation R, just do X=R*X

... look up translation and rotation matrixes to see how to make them.
http://en.wikipedia.org/wiki/Transformation_matrix
http://en.wikipedia.org/wiki/Translation_(geometry [Broken])

Note: matlab has a lot of built infunctions, why not look through the documentation?

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