我正在尝试编辑一个我发现将 mataplot 嵌入 wx 框架的示例。
当我执行代码时，它可以工作： - 从 CSV 中读取包含日期、每行频率的数据（例如“2009-01-10, 100”） - 在 wx 框架中正确绘制图表。
但是，我试图弄清楚如何使 x 轴显示来自 csv 数据的日期而不是 1、2、4、5、6 .. 我能够在我使用的另一个 python 程序中正确地做到这一点：
plt.xticks(range(len(dates)), (dates), rotation=45)
但无法弄清楚如何在这里做类似的事情..
#!/usr/bin/env python
"""
An example of how to use wx or wxagg in an application with the new
toolbar - comment out the setA_toolbar line for no toolbar
"""
# Used to guarantee to use at least Wx2.8
import wxversion
wxversion.ensureMinimal('2.8')
import csv
from numpy import arange, sin, pi
import matplotlib
# uncomment the following to use wx rather than wxagg
#matplotlib.use('WX')
#from matplotlib.backends.backend_wx import FigureCanvasWx as FigureCanvas
# comment out the following to use wx rather than wxagg
matplotlib.use('WXAgg')
from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as FigureCanvas
from matplotlib.backends.backend_wx import NavigationToolbar2Wx
from matplotlib.figure import Figure
import wx
class CanvasFrame(wx.Frame):
def __init__(self):
wx.Frame.__init__(self,None,-1,
'CanvasFrame',size=(550,350))
self.SetBackgroundColour(wx.NamedColor("WHITE"))
self.figure = Figure()
with open('c:\\charts.csv', 'rb') as n:
reader = csv.reader(n)
dates = []
freq = []
for row in reader:
values = row[0].split(',')
dates.append(values[0])
freq.append(values[1])
self.axes = self.figure.add_subplot(111)
false_x = [x for x in range(len(dates))]
self.axes.plot(false_x,freq, 'o-')
##self.axes.plot(t,s)
# self.axes.plot.xticks(range(len(dates)), (dates), rotation=45)
self.canvas = FigureCanvas(self, -1, self.figure)
self.sizer = wx.BoxSizer(wx.VERTICAL)
self.sizer.Add(self.canvas, 1, wx.LEFT | wx.TOP | wx.GROW)
self.SetSizer(self.sizer)
self.Fit()
self.add_toolbar() # comment this out for no toolbar
def add_toolbar(self):
self.toolbar = NavigationToolbar2Wx(self.canvas)
self.toolbar.Realize()
if wx.Platform == '__WXMAC__':
# Mac platform (OSX 10.3, MacPython) does not seem to cope with
# having a toolbar in a sizer. This work-around gets the buttons
# back, but at the expense of having the toolbar at the top
self.SetToolBar(self.toolbar)
else:
# On Windows platform, default window size is incorrect, so set
# toolbar width to figure width.
tw, th = self.toolbar.GetSizeTuple()
fw, fh = self.canvas.GetSizeTuple()
# By adding toolbar in sizer, we are able to put it at the bottom
# of the frame - so appearance is closer to GTK version.
# As noted above, doesn't work for Mac.
self.toolbar.SetSize(wx.Size(fw, th))
self.sizer.Add(self.toolbar, 0, wx.LEFT | wx.EXPAND)
# update the axes menu on the toolbar
self.toolbar.update()
def OnPaint(self, event):
self.canvas.draw()
class App(wx.App):
def OnInit(self):
'Create the main window and insert the custom frame'
frame = CanvasFrame()
frame.Show(True)
return True
app = App(0)
app.MainLoop()
在此先感谢您的帮助！