--- a/scripts/display-trajectories.py	Thu Jun 27 15:31:17 2024 -0400
+++ b/scripts/display-trajectories.py	Thu Jun 27 15:31:36 2024 -0400
@@ -19,7 +19,7 @@
 parser.add_argument('--undistorted-multiplication', dest = 'undistortedImageMultiplication', help = 'undistorted image multiplication', type = float)
 parser.add_argument('-u', dest = 'undistort', help = 'undistort the video (because features have been extracted that way)', action = 'store_true')
 parser.add_argument('-f', dest = 'firstFrameNum', help = 'number of first frame number to display', type = int)
-parser.add_argument('-l', dest = 'lastFrameNum', help = 'number of last frame number to save (for image saving, no display is made)', type = int, default = inf)
+parser.add_argument('-l', dest = 'lastFrameNum', help = 'number of last frame number to save (for image saving, no display is made)', type = int)
 parser.add_argument('-r', dest = 'rescale', help = 'rescaling factor for the displayed image', default = 1., type = float)
 parser.add_argument('-s', dest = 'nFramesStep', help = 'number of frames between each display', default = 1, type = int)
 parser.add_argument('-n', dest = 'nObjects', help = 'number of objects to display', type = int)
@@ -41,6 +41,8 @@
     firstFrameNum = args.firstFrameNum
 if args.lastFrameNum is not None:
     lastFrameNum = args.lastFrameNum
+else:
+    lastFrameNum = inf
 if args.nObjects is not None:
     nObjects = args.nObjects
 else: