Returns the length and width of a shape based on their iniertia axis
i.e. alignment to the x-axis. The length is defined as
the range along the x-axis; the width as the range on the y-axis.
Usage
coo_lw(coo)
Arguments
coo
a matrix of (x; y) coordinates or Coo object
Value
a vector of two numeric: the length and the width.