I've noticed that the line density seems to vary if the x-values in a 2D plot are not ordered and the x,y pairs fall on the same line.
For example, compare these 2 plots:
x1 = arange(5)
x2 = array([2,5,3,1,4])
For me, the plot generated by x2 (the second call of show) is dense in the middle and fades out at the edges. I assume this is somehow due to the line redrawing over itself as it moves from point to point.
Is there a good way to clean it up, other than always sorting the x variable list?