Chris@62: #!/usr/bin/env python
Chris@62: 
Chris@62: import sys
Chris@62: 
Chris@62: if __name__ == '__main__':
Chris@62: 
Chris@62:     nargs = len(sys.argv)
Chris@62:     if nargs != 2:
Chris@62:         print("\nUsage: " + sys.argv[0] + " file.txt")
Chris@62:         exit(1)
Chris@62: 
Chris@62:     fname = sys.argv[1]
Chris@62:     
Chris@62:     f = open(fname, 'r')
Chris@62: 
Chris@62:     data = [ line.split(' ') for line in f ];
Chris@62:     ms = 0
Chris@62:     extant = {}
Chris@62:     ix = 0
Chris@62: 
Chris@62:     while ix < len(data):
Chris@62: 
Chris@62:         sec = ms / 1000.0
Chris@62: 
Chris@62:         while ix < len(data) and sec >= float(data[ix][0]):
Chris@62:             time, freq, vely = data[ix][:3]
Chris@62:             if vely == "0":
Chris@65:                 if freq in extant:
Chris@65:                     del extant[freq]
Chris@62:             else:
Chris@62:                 extant[freq] = vely
Chris@62:             ix = ix + 1
Chris@62: 
Chris@62:         print("\t".join([str(sec)] + list(extant.keys())))
Chris@62:             
Chris@62:         ms = ms + 10
Chris@62: 
Chris@62: