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counterImage.sh
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Mon, Nov 25, 12:27

counterImage.sh
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#!/bin/bash
# Compute and display the counter images of the selected
# ellipse in DS9
#
# How it works:
# - select an ellipse with text in DS9
# - run the script
#
# Option: You can specify the source redshift by typing
# counterImage.sh -z<redshift>
#
# and again
# counterImage.sh
#
# to effectively compute the counter images.
#
# Be aware :
# - Check that your best.par file is in the working
# directory of DS9
#
# EJ 09/2007
#
##############################################
# ADAPT THIS VALUE TO THE SIZE OF YOUR FIELD
##############################################
dmax=40 # size in arcsec of the champ section around the image
imcat=counter.cat
mod=best.par
sreg=s.reg
oreg=o.reg
zfile=z
wdir=$(xpaget ds9 cd)
z=1 #default redshift
cd $wdir
#############################################
# FIRST FUNCTION: set the image redshift with -z option
##############################################
#
# Write the redshift in z file and exit
if( [ "x${1:0:2}" = "x-z" ] )
then
z=${1##-z}
echo $z >| $zfile
exit
fi
#############################################
# SECOND FUNCTION: compute counter images
##############################################
#
# Save the selected ellipses in DS9 format file $sreg, and count them
rm -f e.reg $sreg $oreg
xpaget ds9 regions selected > $sreg
nsel=$(grep "ellipse" $sreg | wc -l)
if( [ $nsel -lt 1 ] )
then
echo "ERROR: you must select at least one ellipse"
exit
fi
# Keep unrelated regions in $oreg
xpaset -p ds9 regions group counterImage delete
xpaset -p ds9 regions delete select
xpaget ds9 regions > $oreg
# Clean everything
xpaset -p ds9 regions delete all
# Create $imcat file (Input catalog of images in LT format)
# Write the header
rm -f $imcat
radec=$(awk '/\treference.*/ {print $3,$4}' $mod)
echo "#REFERENCE 3 $radec" > $imcat
# Convert DS9 format file $sreg to LT format file $imcat
if( cat $sreg | garc.pl STDIN $imcat > /dev/null )
then
if( [ -e $zfile ] )
then
z=$(cat $zfile)
fi
# detect loop format 'z0;z1;dz' in $zfile
if( [ $(echo $z | awk -F';' '{print NF}') -eq 3 ] )
then
z0=$(echo $z | cut -d';' -f1)
z1=$(echo $z | cut -d';' -f2)
dz=$(echo $z | cut -d';' -f3)
else
z0=$(echo $z | cut -d';' -f1)
z1=$z0
dz=1.
fi
# Setup z0, z1 and dz to fit the for integer format
s0=$(echo "scale($z0)" | bc)
s1=$(echo "scale($z1)" | bc)
ds=$(echo "scale($dz)" | bc)
smax=$s0
[ $s1 -gt $smax ] && smax=$s1
[ $ds -gt $smax ] && smax=$ds
z0=$(echo "scale=0; $z0*10^$smax/1." | bc)
z1=$(echo "scale=0; $z1*10^$smax/1." | bc)
dz=$(echo "scale=0; $dz*10^$smax/1." | bc)
# Loop over the redshift range in $zfile
for((i=$z0;i<=$z1;i+=$dz))
do
z=$(echo "scale=$smax; $i/(10^$smax)" | bc)
echo "Redshift : $z"
# set the redshift of the selected image in $imcat
awk -v z=$z '/#/; ! /#/ {$7=z; print};' $imcat > a
mv a $imcat
# modify the $mod file
sed -i "s/\timage.*/\timage 3 $imcat/" $mod
# Focus the champ section around the image
xc=( $(awk '! /#/ {print $2}' $imcat) )
yc=( $(awk '! /#/ {print $3}' $imcat) )
xmin=$(echo "${xc[0]}-$dmax" | bc)
xmax=$(echo "${xc[0]}+$dmax" | bc)
ymin=$(echo "${yc[0]}-$dmax" | bc)
ymax=$(echo "${yc[0]}+$dmax" | bc)
sed -i "s/\txmin.*/\txmin $xmin/" $mod
sed -i "s/\txmax.*/\txmax $xmax/" $mod
sed -i "s/\tymin.*/\tymin $ymin/" $mod
sed -i "s/\tymax.*/\tymax $ymax/" $mod
echo -n "Run lenstool $mod..."
lenstool $mod -n > /dev/null
echo "done"
# Convert image.all to e.reg and append counterImage tag
pelli image.all green clean > /dev/null
xpaset -p ds9 regions deleteall
sed -i -e "s/$/ tag={counterImage}/" e.reg
sed -i -e "s/text={\([0-z]*\)}/text={\1$z}/" e.reg
# Plot the selected, unrelated and counter images back
cat $sreg | xpaset ds9 regions
xpaset -p ds9 regions select all
cat $oreg | xpaset ds9 regions
cat e.reg | xpaset ds9 regions
[ $(($i+$dz)) -le $z1 ] && sleep 2
done
fi

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