1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
#!/usr/bin/env python
# Purpose: Demonstrates stripcharting using wxmpl
# Author: Ken McIvor <mcivor@iit.edu>
#
# Copyright 2005 Illinois Institute of Technology
#
# See the file "LICENSE" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
import wx
import time
import wxmpl
from numpy import arange, cos, sin, pi, exp
class StripchartApp(wx.App):
def OnInit(self):
self.timer = wx.PyTimer(self.OnTimer)
self.numPoints = 0
self.frame = wxmpl.PlotFrame(None, -1, 'WxMpl Stripchart Demo')
self.frame.Show(True)
# The data to plot
x = arange(0.0, 200, 0.1)
y1 = 4*cos(2*pi*(x-1)/5.7)/(6+x) + 2*sin(2*pi*(x-1)/2.2)/(10)
y2 = y1 + .5
y3 = y2 + .5
y4 = y3 + .5
# Fetch and setup the axes
axes = self.frame.get_figure().gca()
axes.set_title('Stripchart Test')
axes.set_xlabel('t')
axes.set_ylabel('f(t)')
# Attach the StripCharter and define its channels
self.charter = wxmpl.StripCharter(axes)
self.charter.setChannels([
TestChannel('ch1', x, y1),
TestChannel('ch2', x, y2),
TestChannel('ch3', x, y3),
TestChannel('ch4', x, y4)
])
# Prime the pump and start the timer
self.charter.update()
self.timer.Start(100)
return True
def OnTimer(self):
# avoid wxPyDeadObject errors
if not isinstance(self.frame, wxmpl.PlotFrame):
self.timer.Stop()
return
if self.numPoints == self.charter.channels[0].x.shape[0]:
self.timer.Stop()
for channel in self.charter.channels:
channel.tick()
self.charter.update()
class TestChannel(wxmpl.Channel):
"""
A data-provider that reveals another point every time its C{tick()} method
is called.
"""
def __init__(self, name, x, y):
"""
Creates a new C{TestChannel} with the matplotlib label C{name} and X
and Y vectors.
"""
wxmpl.Channel.__init__(self, name)
self.x = x
self.y = y
self.idx = 0
def getX(self):
"""
Returns the current X vector.
"""
return self.x[0:self.idx]
def getY(self):
"""
Returns the current Y vector.
"""
return self.y[0:self.idx]
def tick(self):
"""
Reveals another point from the source X and Y vectors.
"""
if self.idx < self.x.shape[0]:
self.setChanged(True)
self.idx += 1
def main():
app = StripchartApp()
app.MainLoop()
if __name__ == '__main__':
main()
|
