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convert_inplace*
Routine to convert a HEALPix map from NESTED to RING scheme or vice
versa. The conversion is done inplace, meaning that it doesn't require memory
for a temporary map, like the
 or
routines. But for that reason, this routine is slower and not parallelized. The routine is a
wrapper for 6 different routines and can threfore process
integer, single precision and double precision maps as well as mono or bi
dimensional arrays.
Location in HEALPix directory tree:
src/f90/mod/pix_tools.f90
FORMAT call convert_inplace*(
subcall, map
)
ARGUMENTS
| name & dimensionality |
kind |
in/out |
description |
|---|
| |
|
|
|
|
subcall |
-- |
IN |
routine to be called by convert_inplace_real. Set this to ring2nest or nest2ring dependent on wether the conversion is RING to NESTED or vice versa. |
| map(0:npix-1) |
I4B/ SP/ DP |
INOUT |
mono-dimensional full sky map to be converted, the routine finds the size itself. |
| map(0:npix-1,1:nd) |
I4B/ SP/ DP |
INOUT |
bi-dimensional (nd>0) full sky map to be
converted, the routine finds both dimensions
itself. Processing a bidimensional map with nd>1 should be
faster than each of the nd 1D-maps consecutively. |
EXAMPLE:
call convert_inplace(ring2nest,map)
Converts an map from RING to NESTED scheme.
MODULES & ROUTINESThis section lists the modules and routines used by convert_inplace*.
-
nest2ring
- routine to convert a NESTED pixel index to RING pixel number.
-
ring2nest
- routine to convert a RING pixel index to NESTED pixel number.
RELATED ROUTINESThis section lists the routines related to convert_inplace*
-
convert_nest2ring
- convert from NESTED to RING scheme using a temporary array. Requires more space then convert_inplace, but is faster.
-
convert_ring2nest
- convert from RING to NESTED scheme using a temporary array. Requires more space then convert_inplace, but is faster.
Eric Hivon
2010-06-18
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