DynamicMatrixTransform#
- class astropy.coordinates.DynamicMatrixTransform(matrix_func, fromsys, tosys, priority=1, register_graph=None)[source]#
Bases:
BaseAffineTransform
A coordinate transformation specified as a function that yields a 3 x 3 cartesian transformation matrix.
This is similar to, but distinct from StaticMatrixTransform, in that the matrix for this class might depend on frame attributes.
- Parameters:
- matrix_func
callable()
A callable that has the signature
matrix_func(fromcoord, toframe)
and returns a 3 x 3 matrix that convertsfromcoord
in a cartesian representation to the new coordinate system.- fromsysclass
The coordinate frame class to start from.
- tosysclass
The coordinate frame class to transform into.
- priority
float
orint
The priority if this transform when finding the shortest coordinate transform path - large numbers are lower priorities.
- register_graph
TransformGraph
orNone
A graph to register this transformation with on creation, or
None
to leave it unregistered.
- matrix_func
- Raises:
TypeError
If
matrix_func
is not callable