2011/7/13 SULSEUNG-JIN <sulsj0...@hotmail.com>:
> Thanks, Justin
>
> I think I made a confusing example code. Here comes new one:
Maybe you just need to force a call to draw() and set your x/y limits.
This works for me on matplotlib 1.0.1
$ ipython -pylab
# ====
from matplotlib.collections import LineCollection
f = figure()
plot()
ax = gca()
vec = numpy.random.random((10,3))
segs = []
for i in range(0, len(vec)):
x1 = vec[i][0]
#x1 = 3000000
x2 = vec[i][1]
#x2 = 4000000
y1 = y2 = vec[i][2]
segs.extend( [[(x1,y1),(x2,y2)]] )
line_segments = LineCollection(segs, linewidth=3, alpha=0.3, colors =
'r', linestyle = 'solid')
ax.add_collection(line_segments)
ax.set_xlim(0,1)
ax.set_ylim(0,1)
show() # hmmmm... nothing yet
draw() # force a draw; now it works
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