Bug fix: the default behaviour should be no save

Analysis/plot_traj.py

@@ -90,13 +90,12 @@ if __name__ == "__main__":
     import plot_eddy_contours
     import time
     
-    parser = argparse.ArgumentParser(description = __doc__, formatter_class
-                                     = argparse.ArgumentDefaultsHelpFormatter)
+    parser = argparse.ArgumentParser(description = __doc__)
     parser.add_argument("shp_tr_dir", help = "directory containing triplet of "
                         "shapefiles, with visible eddies at all dates")
     parser.add_argument("-l", "--label",
                         choices = ["root", "leaf", "split", "merge"])
-    parser.add_argument("-s", "--save", default = "pdf", metavar = "format",
+    parser.add_argument("-s", "--save", metavar = "format",
                         help = "Save file to specified format")
     parser.add_argument("-t", "--time", action = "store_true",
                         help = "Report elapsed time")