89 lines
2.6 KiB
Bash
89 lines
2.6 KiB
Bash
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#! /bin/bash
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# (C) J C Hill 2007
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# script to construct, pixelize, and snap the approximate healpix polygons in mangle
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# If no outfile is given, healpix polygon file is named automatically and put in masks/healpix/healpix_polys directory
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# USAGE: healpixpolys.sh <Nside> <scheme> <p> <r> <polygon_outfile>
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# EXAMPLE: healpixpolys.sh 16 s 0 3
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# EXAMPLE: healpixpolys.sh 16 s 0 3 nside16p3s.pol
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if [ "$MANGLEBINDIR" = "" ] ; then
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MANGLEBINDIR="../../bin"
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fi
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if [ "$MANGLESCRIPTSDIR" = "" ] ; then
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MANGLESCRIPTSDIR="../../scripts"
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fi
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if [ "$MANGLEDATADIR" = "" ] ; then
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MANGLEDATADIR="../../masks"
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fi
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#check command line arguments
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if [ $# -lt 4 ] ; then
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echo >&2 "ERROR: enter Nside value, pixelization scheme, maximum number of polygons per pixel <p>,"
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echo >&2 "resolution <r>, and (optionally) the name of the output file as command line arguments."
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echo >&2 ""
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echo >&2 "USAGE: healpixpolys.sh <Nside> <scheme> <p> <r> <polygon_outfile>"
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echo >&2 "EXAMPLE: healpixpolys.sh 16 s 0 3"
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echo >&2 "EXAMPLE: healpixpolys.sh 16 s 0 3 nside16p3s.pol"
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exit 1
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fi
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if [ "$1" != 0 ]; then
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for (( I = 1 ; I < 8192 ; I = `expr 2 \* $I` ))
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do
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if [ "$1" = "$I" ]; then
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FLAG=1
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fi
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done
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if [ "$FLAG" != 1 ]; then
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echo >&2 "ERROR: <Nside> must be a power of 2."
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echo >&2 "USAGE: healpixpolys.sh <Nside> <scheme> <p> <r> <polygon_outfile>"
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echo >&2 "EXAMPLE: healpixpolys.sh 16 s 0 3"
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echo >&2 "EXAMPLE: healpixpolys.sh 16 s 0 3 nside16p3s.pol"
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exit 1
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fi
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fi
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if [ "$1" = 0 ]; then
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POLYS=1
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else
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POLYS=`expr 12 \* $1 \* $1`
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fi
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#rm jhw
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#echo healpix_weight $POLYS >> jhw
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#for (( I = 0 ; I < POLYS; I++ ))
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#do
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# echo 0 >> jhw
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#done
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$MANGLEBINDIR/poly2poly -ob -iH$1 - jp || exit
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#$MANGLEBINDIR/poly2poly -ob jhw jp || exit
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#note that -vo switch is needed in order to keep the correct id numbers (the HEALPix NESTED pixel numbers)
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$MANGLEBINDIR/pixelize -P$2$3,$4 -ib -ob -vo jp jpx || exit
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rm jp
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if [ "$5" = "" ]; then
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if [ ! -d "$MANGLEDATADIR/healpix/healpix_polys" ] ; then
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echo >&2 "ERROR: $MANGLEDATADIR/healpix/healpix_polys not found."
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# echo >&2 "Check that the environment variable MANGLEDATADIR is pointing to"
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echo >&2 "the appropriate directory (e.g., the mangle 'masks' directory)."
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exit 1
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fi
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if [ "$3" = 0 ]; then
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outfile="$MANGLEDATADIR/healpix/healpix_polys/nside${1}_p${4}${2}.pol"
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else
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outfile="$MANGLEDATADIR/healpix/healpix_polys/nside${1}_p-1${2}.pol"
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fi
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else
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outfile=$5
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fi
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$MANGLEBINDIR/snap -ib -vo -os jpx $outfile || exit
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rm jpx
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echo "HEALPix pixels at Nside=$1 written to $outfile."
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