gstlal_cherenkov_plot_rankingstat: change the command line options

- can load multiple rankingstat files

gstlal-burst/bin/gstlal_cherenkov_plot_rankingstat

@@ -47,6 +47,7 @@ from optparse import OptionParser
 import sys
 
 from ligo.lw import utils as ligolw_utils
+from lal.utils import CacheEntry
 from gstlal.cherenkov import rankingstat as cherenkov_rankingstat
 
 
@@ -68,15 +69,18 @@ def parse_command_line():
 	parser = OptionParser(
 		description = "GstLAL-based cherenkov burst ranking statistic plotting tool."
 	)
-	parser.add_option("--verbose", action = "store_true", help = "Be verbose.")
-	parser.add_option("--input-rank", metavar = "filename", help = "Name of the input rankingstat .")
+	parser.add_option("--ranking-stat-cache", metavar = "filename", help = "Also load the ranking statistic likelihood ratio data files listed in this LAL cache.  See lalapps_path2cache for information on how to produce a LAL cache file.")
 	parser.add_option("--output", metavar = "string", help = "Name of output png.")
-	options, filenames = parser.parse_args()
+	parser.add_option("-v", "--verbose", action = "store_true", help = "Be verbose.")
+	options, urls = parser.parse_args()
+
+	if options.ranking_stat_cache is not None:
+		urls += [CacheEntry(line).url for line in open(options.ranking_stat_cache)]
 
 	# save for the process_params table
 	options.options_dict = dict(options.__dict__)
 
-	return options, filenames
+	return options, urls
 
 
 #
@@ -88,15 +92,14 @@ def parse_command_line():
 #
 
 
-options, filenames = parse_command_line()
+options, urls = parse_command_line()
 
 
 #
 # load the ranking stat file
 #
 
-
-rankingstat = cherenkov_rankingstat.RankingStat.from_xml(ligolw_utils.load_filename(options.input_rank, verbose = options.verbose, contenthandler = cherenkov_rankingstat.LIGOLWContentHandler), "rankingstat")
+rankingstat = cherenkov_rankingstat.marginalize_rankingstat_urls(urls, verbose = options.verbose)
 
 
 #