Defining Vectors edit page

The standard way to define a three dimensional vector is by its coordinates.

This gives a single vector with coordinates (1,1,0) with respect to the x, y , z coordinate system. A second way to define a specimen directions is by its spherical coordinates, i.e. by its polar angle and its azimuth angle. This is done by the option polar.

Finally, one can also define a vector as a linear combination of the predefined vectors xvector, yvector, and zvector

Predefined Vectors

The command vector3d.rand allows to define random unit vectors

Similarly, the commands vector3d.ones, vector3d.zeros and vector3d.nan allow to define vectors of ones, zeros and nan.