Help for "shapelets_polar_expand" routine:

Uncompress complex numbers after shapelets_polar_reduce.

Polar shapelet coefficients are complex. They store twice as much information as there is in an wholly real image. shapelets_polar_expand.pro compresses the redundant information, creating a floating point array with as many entries as there were in the original complex array. This routine reverses the process, recovering the full set of complex numbers.

See also the header below, which has been extracted from the source code for this routine.

; Apr 02 - RM Removed a degeneracy in phase coefficients
; Feb 02 - Written by Richard Massey
;
; Manufactures and reinserts the degenerate complex parts of polar shapelet
; coefficients so they can be transformed back into cartesian shapelets.
; See shapelets_polar_reduce.pro for extraction technique.

View the full source code for this routine, return to the shapelets web page, or return to the code help menu.