The number of coordinate values for each point to be
transformed (i.e. the number of dimensions of the space in
which the points will reside). The same number is applicable
to both input and output points.
shift
An array containing the values to be added on to the input
coordinates in order to create the output coordinates. A separate
value should be supplied for each coordinate.
options
Pointer to a null-terminated string containing an optional
comma-separated list of attribute assignments to be used for
initialising the new ShiftMap. The syntax used is identical to
that for the astSet function and may include "printf" format
specifiers identified by "%" symbols in the normal way.
...
If the "options" string contains "%" format specifiers, then
an optional list of additional arguments may follow it in
order to supply values to be substituted for these
specifiers. The rules for supplying these are identical to
those for the astSet function (and for the C "printf"
function).
Returned Value:
astShiftMap()
A pointer to the new ShiftMap.
Notes:
A null Object pointer (AST__NULL) will be returned if this
function is invoked with the AST error status set, or if it
should fail for any reason.
Status Handling
The protected interface to this function includes an extra
parameter at the end of the parameter list descirbed above. This
parameter is a pointer to the integer inherited status
variable: "int status".
AST A Library for Handling World Coordinate Systems in Astronomy Starlink User Note 211 R.F. Warren-Smith & D.S. Berry 24th May 2011 E-mail:ussc@star.rl.ac.uk
Copyright (C) 2009 Science \& Technology Facilities Council