(sw-cartesian)=

# sw_cartesian

## Syntax
 
`[vy, vz, vx] = sw_cartesian(n)`
 
`V = sw_cartesian(n)`
 
## Description
 
`[vy, vz, vx] = sw_cartesian(n)` creates an $(x,y,z)$ right handed
Cartesian coordinate system with $v_x$, $v_y$ and $v_z$ defining the
basis vectors.
 
`V = sw_cartesian(n)` the generated basis vectors are stored in the `V`
matrix: `V = [vx vy vz]` as column vectors.
 
## Input Arguments
 
`n`
: Either a 3 element row/column vector or a $[3\times 3]$ matrix with
  columns defining 3 vectors.
 
## Output Arguments
 
`vy,vz,vx`
: Vectors defining the right handed coordinate system. They are
          either column of row vectors depending on the shape of the
          input `n`.