Yigit Turgut wrote: > Problem is I get a sawtooth instead of a square wave. I know that I > need to define points between 0,1,2 time integer values to achieve > this. But I hope there is a python trick that will yield this > time,data plot to a square wave?
There is no "Python trick", pylab is showing the data you provide. To get a square wave you need two y values per x value, for example import pylab time = [0, 0, 1, 1, 2, 2, 3, 3, 4, 4] data = [0, 1, 1, 0, 0, 1, 1, 0, 0, 1] pylab.plot(time, data) pylab.ylim(-.1, 1.1) # so you see the horizontal lines of the graph pylab.xlim(-.1, 4.1) pylab.show() A general advice: try the individual aspects of your script (plotting, pygame flicker, data i/o) separately to make sure you understand them well enough before putting them together in the final version of your code. -- http://mail.python.org/mailman/listinfo/python-list
