points1 - floats: the parameters of the coordinate
systems.
inds1 - Array of length ninds,
containing descriptions of coordinate systems.
1) type code, see Coords.cxx for current codes
2) parent and determining coordinate systems,
as many as the type code requires (usually 1 or 2)
3) an index to the points1 array, where the parameters
of the coordinate system should be read from.
inds2 - A second array, similar to inds1, but for points2.