Hello everyone,
I was playing around with matplotlib, created a plot that allows users to add
nodes (axis is set off as it's going to be used for graph data structuer
purposes, hence don't want the y-x axis, is there another way to hide them as
well?).
Basically the program below allows person press the 'n' button, and then can
click on any point on the plot and a small circular marker will appear.
I have two questions:
1) You will notice that during the first 2 marker inputs, the plot rescales it
self. I don't really know why that's happening, any idea?
2) Is it possible to disallow users of creating to marker points ontop of each
other, so that no markers will overlap (even if the edges)?
Thank you.
#### Code
from pylab import *
from matplotlib.widgets import *
fig = plt.figure()
ax = fig.add_subplot(111)
fig.set_facecolor('w')
ax.set_axis_off()
ax.set_title('Test 1')
cid = None
def onClick(event):
"""docstring for onClick"""
ax.plot([event.xdata], [event.ydata], 'bo', picker=5, markersize=15)
draw()
fig.canvas.mpl_disconnect(cid)
def onPick(event):
"""docstring for onPick"""
artist = event.artist
artist.set_color('r')
draw()
def add_node(event):
"""docstring for press"""
if event.key=="n":
global cid
fig.canvas.mpl_disconnect(cid)
cid = fig.canvas.mpl_connect('button_press_event',onClick)
fig.canvas.mpl_connect('key_press_event', add_node)
fig.canvas.mpl_connect('pick_event',onPick)
plt.show()
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