reorder

This IDL facility allows the reordering of a full sky map from NESTED to RING scheme and vice-versa.

Location in HEALPix directory tree: src/idl/toolkit/reorder.pro 

FORMAT

IDL> Result = REORDER (Input_map [, /HELP, In=, Out=, /N2R, /R2N])

QUALIFIERS

Result

variable containing on output the reordered map

Input_map

variable containing the input map

KEYWORDS

/HELP

if set, the documentation header is printed out and the code exits

In=

specifies the input ordering, can be either 'RING' or 'NESTED'

Out=

specifies the output ordering, can be either 'RING' or 'NESTED'

/N2R

If set, does the NESTED to RING conversion, equivalent to In='NESTED' and Out='RING'

/R2N

If set, does the RING to NESTED conversion, equivalent to In='RING' and Out='NESTED'

DESCRIPTION

reorder allows the reordering of a full sky map from NESTED to RING scheme and vice-versa

RELATED ROUTINES

This section lists the routines related to reorder

idl

version 6.4 or more is necessary to run reorder

ud_grade

downgrades or progrades a full-sky or cut-sky HEALPix map.

EXAMPLE:

map_nest = reorder(map_ring, in='ring', out='nest')

The RING ordered map map_ring is converted to the NESTED map map_nest.