Node Tracks

You can use node tracks to see where the network goes. Turn network tracks with the following setting in cometparams.ini. e.g.

BMP_TRACKS true        # turns on node tracking
TRACK_MIN_RANGE 300.0  # select nodes created between this time...
TRACK_MAX_RANGE 305.0  # ...and this time (in frames)
TRACKFRAMESTEP  5      # number of frames between each point in the track when plotted

In addition, node tracks can be used to measure stretching of the shell or tail:

TRACKS_LENGTHS  false  # if false then tracks nodes, if true then tracks pairs and measures the distances between them
TRACK_TARGET_DIST 2.5  # tells code to select node pairs aiming for about this distance between them
SECOND_SHELL    false  # if SECOND_SHELL is false, tracks circumferential lengths in one shell
                       # if SECOND_SHELL is true, tracks radial lengths between two shells
TRACK_MIN_RANGE2 10    # select nodes created between this time...
TRACK_MAX_RANGE2 30    # ...and this time for the second shell

Node tracks are added separately after the initial calculation run, e.g. running

comet post 300:500

would track nodes up to frame 500. This range must include TRACK_MIN_RANGE, TRACK_MAX_RANGE and TRACK_MIN_RANGE2 and TRACK_MAX_RANGE2 if they are being used. Note: the program will automatically try to select nodes distributed evenly across the bead, but needs enough nodes within the frame range given.

Once this is done the tracks will be rendered onto the bitmaps, and can be viewed in 3d by setting

VIS_TRACKS     true

then running

comet view 400:400