#!/bin/sh
set -e
# land sea mask, 0=ocean, 1=land 

if [ $# -ne 3 ] ; then
  echo "Error in $0: invalid number of arguments $#"
  exit 1
fi

pfx=$1
var=$2
out=$3

release mask
access  mask ${pfx}_${var}

echo "C*RCOPY            1         1" | ccc rcopy mask mask1
echo "C*FMASK           -1 NEXT   EQ       -1." | ccc fmask mask1 ${pfx}_${out}

release mask mask1 .ccc_cards