From f8799d813675c98fbc000ae599d84984f4a09880 Mon Sep 17 00:00:00 2001
From: Aaron LI <aaronly.me@outlook.com>
Date: Mon, 6 Mar 2017 18:39:32 +0800
Subject: chandra_genspcreg.sh: Give default values for reg_in and reg_out

---
 scripts/chandra_genspcreg.sh | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

(limited to 'scripts')

diff --git a/scripts/chandra_genspcreg.sh b/scripts/chandra_genspcreg.sh
index 22754df..41b28a3 100755
--- a/scripts/chandra_genspcreg.sh
+++ b/scripts/chandra_genspcreg.sh
@@ -33,16 +33,15 @@ CH_HI=479
 CH_BKG_LOW=651
 CH_BKG_HI=822
 
-if [ $# -ne 4 ] ; then
-    printf "usage:\n"
-    printf " `basename $0` <evt> <bkg_pi> <reg_in> <reg_out>\n"
+if [ $# -lt 2 ] ; then
+    echo "usage: `basename $0` <evt> <bkg_pi> [ centroid.reg rspec.reg ]"
     exit 1
 fi
 
 EVT=$1
 BKGSPC=$2
-REG_IN=$3
-REG_OUT=$4
+REG_IN=${3:-centroid.reg}
+REG_OUT=${4:-rspec.reg}
 
 X=`\grep -i 'point' ${REG_IN} | head -n 1 | tr -d 'a-zA-Z() ' | awk -F',' '{ print $1 }'`
 Y=`\grep -i 'point' ${REG_IN} | head -n 1 | tr -d 'a-zA-Z() ' | awk -F',' '{ print $2 }'`
-- 
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