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dist2holes_nest
For a input binary mask in NESTED ordering,
dist2holes_nest
returns the angular distance (in radians) from each
valid
(1-valued) pixel to the closest
invalid
(0-valued) pixel. Distances are measured between pixel centers.
Location in HEALPix directory tree:
src/f90/mod/mask_tools.F90
FORMAT
call
dist2holes_nest
(
nside
,
mask
,
distance
)
ARGUMENTS
name & dimensionality
kind
in/out
description
nside
I4B
IN
the
N
side
value of the input mask.
mask
(0:Npix-1)
I4B
IN
Input NESTED-ordered mask. Npix = 12*nside*nside
distance
(0:Npix-1)
DP
OUT
Output NESTED-ordered angular-distance map
EXAMPLE:
use healpix_types
use healpix_modules
...
call dist2holes_nest(nside, mask, distance)
???
MODULES & ROUTINES
This section lists the modules and routines used by
dist2holes_nest
.
mask_tools
mask processing module (see related routines below)
RELATED ROUTINES
This section lists the routines related to
dist2holes_nest
dist2holes_nest
angular distance to closest invalid pixel of the given mask
fill_holes_nest
turn to
valid
all pixels located in 'holes' containing fewer pixels than the given threshold
maskborder_nest
identify inner boundary pixels of 'holes' for given mask
size_holes_nest
returns size (in pixels) of holes found in input mask
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HEALPix/F90 subroutines
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Version 3.30, 2015-10-08