8.17.1 Isopar class: A class representing an isoparametric transformation

The Isopar class has this constructor:

class Isopar( eltype,coords,oldcoords)
Create an isoparametric transformation.

type is one of the keys in Isopar.isodata coords and oldcoords can be either arrays, Coords or Formex instances, but should be of equal shape, and match the number of atoms in the specified transformation type

Isopar objects have the following methods:

transform( X)
Apply isoparametric transform to a set of coordinates.

Returns a Coords array with same shape as X

transformFormex( F)
Apply an isoparametric transform to a Formex.

The result is a topologically equivalent Formex.