1
我想获得使用Tkinter的应用程序的一些经验。这个练习应用程序将在两个面板图中显示一些数据，有一个按钮可以创建新数据，并且可以选择和突出显示数据区域。这是最后一部分，我陷入困境。我有一个类（PointSelector），它将两个轴（axarr）的列表作为输入，一个用于选择哪个将被高亮显示的整数（ax2select），图形（图），画布（canv），要突出显示的范围数量（NumRanges）和数据（xdat和ydat）。如何使用tkinter和matplotlib从图中选择点而不关闭它
除非在mpl_connect行之后使用plt.show（）命令，否则代码不会等待click事件。但是，如果我不使用plt.show（），一个新的绘图窗口出现（我不想）和matplotlib将阻塞，直到所有的窗口都关闭（我希望窗口继续开放后大腿高亮完成）。
有没有办法来堵塞一旦mpl_disconnect被称为释放matplotlib（也没有第二个窗口出现即使用plt.plot（））？或者有没有办法使用matplotlib的事件系统而不使用命令plt.show（）？
import Tkinter as tk
import numpy as np
import matplotlib
matplotlib.use('TkAgg')
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
import matplotlib.pyplot as plt
import tkFileDialog
LARGE_FONT = ("Verdana", 12)
class PointSelector():
'''
classdocs
'''
def __init__(self, axarr, ax2select, fig, canv, NumRanges, xdat, ydat):
'''
Constructor
'''
self.axarr = axarr
self.ax2select = ax2select
self.fig = fig
self.canv = canv
self.NumRanges = NumRanges
SelectedPoints = []
self.Ranges = []
self.xdat = xdat
self.ydat = ydat
self.Nselected = 0
self.SelectedL = False
self.SelectedR = False
self.LeftArr = []
self.RightArr = []
self.cid = canv.mpl_connect('button_press_event', self.onclick)
# plt.ion()
# plt.show()
canv.show()
print 'Done With ALL!'
def PlotRange(self,rng):
x = self.xdat[range(rng[0],rng[1]+1)]
y = self.ydat[range(rng[0],rng[1]+1)]
self.axarr[self.ax2select].plot(x,y,color='r')
self.canv.draw()
def PlotPoint(self,x,y):
self.axarr[self.ax2select].scatter(x,y,color='r')
self.canv.draw()
def onclick(self, event):
print('button=%d, x=%d, y=%d, xdata=%f, ydata=%f' %
(event.button, event.x, event.y, event.xdata, event.ydata))
if event.inaxes == self.axarr[self.ax2select]:
xval = np.argmin(np.abs(event.xdata-self.xdat))
if self.SelectedL:
self.RightArr.append(xval)
self.SelectedR = True
self.PlotPoint(self.xdat[xval], self.ydat[xval])
else:
self.LeftArr.append(xval)
self.SelectedL = True
self.PlotPoint(self.xdat[xval], self.ydat[xval])
if self.SelectedL and self.SelectedR:
self.SelectedL = False
self.SelectedR = False
self.Nselected += 1
self.PlotRange([self.LeftArr[-1], self.RightArr[-1]])
if self.Nselected == self.NumRanges:
for i in range(len(self.LeftArr)):
self.Ranges.append([self.LeftArr[i], self.RightArr[i]])
self.canv.mpl_disconnect(self.cid)
print 'Done With Selection'
else:
print 'Outside Window'
class Driver(tk.Tk):
'''
classdocs
'''
def __init__(self, *args, **kwargs):
'''
Constructor
'''
tk.Tk.__init__(self, *args, **kwargs)
container = tk.Frame(self)
container.pack(side="top", fill="both",expand=True)
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.frames = dict()
F = StartPage
frame = F(container, self)
self.frames[F] = frame
frame.grid(row=0,column=0,sticky="nsew")
self.show_frame(StartPage)
def show_frame(self, cont):
frame = self.frames[cont]
frame.tkraise()
class StartPage(tk.Frame):
'''
classdocs
'''
def __init__(self, parent, controller):
'''
Constructor
'''
tk.Frame.__init__(self, parent)
self.controller = controller
label = tk.Label(self,text="Start Page", font=LARGE_FONT)
label.pack(pady=10,padx=10)
quitButton = tk.Button(self, text="Quit",command=self._quit)
quitButton.pack(side="bottom")
NewDataButton = tk.Button(self, text="Get New Data",command=self.GetNewData)
NewDataButton.pack(side="top")
menu = tk.Menu(parent)
controller.config(menu=menu)
submenuFile = tk.Menu(menu)
menu.add_cascade(label="File",menu=submenuFile)
submenuFile.add_command(label='Open File', command=self.onOpen)
submenuFile.add_command(label='Load Configuration File', command=self.onOpen)
submenuFile.add_separator()
submenuFile.add_command(label='Exit', command=self._quit)
submenuContinuum = tk.Menu(menu)
menu.add_cascade(label="Continuum",menu=submenuContinuum)
canvas_width = 100
canvas_height = 100
canv = tk.Canvas(self,width=canvas_width,height=canvas_height)
canv.pack()
self.x = np.linspace(0.0,4.0*np.pi,100)
self.fig = plt.figure(figsize=(6,6))
self.axarr = []
self.axarr.append(plt.subplot(211))
self.axarr.append(plt.subplot(212))
self.canv = FigureCanvasTkAgg(self.fig,master=self)
self.canv.show()
self.canv.get_tk_widget().pack()
self.canv._tkcanvas.pack(side=tk.TOP,fill=tk.BOTH,expand=1)
self.GetNewData()
self.txt=tk.Text(self)
submenuContinuum.add_command(label='Select Continuum',
command=lambda:PointSelector(self.axarr, 0, self.fig, self.canv, 2,
self.x, self.y))
submenuContinuum.add_command(label='Remove Continuum', command=donothing)
def GetNewData(self):
rnum = (np.random.rand(1))
print rnum
self.y = np.sin(self.x)*(np.random.rand(1)*4.0)*(self.x)**rnum
self.dy = np.gradient(self.y, self.x[1]-self.x[0])
self.DrawData()
def DrawData(self):
self.axarr[0].clear()
self.axarr[1].clear()
self.axarr[0].plot(self.x,self.y)
self.axarr[1].plot(self.x,self.dy)
self.canv.draw()
def onOpen(self):
ftypes = [('Python files', '*.py'), ('All files', '*')]
dlg = tkFileDialog.Open(self, filetypes = ftypes)
fl = dlg.show()
if fl != '':
text = self.readFile(fl)
self.txt.insert('end', text)
def readFile(self, filename):
f = open(filename, "r")
text = f.read()
return text
def _quit(self):
self.controller.quit()
self.controller.destroy()
def donothing():
print "nothing"
if __name__ == '__main__':
app = Driver()
app.mainloop()
谢谢，这个固定。 – BSM
如果这样可以解决问题，则可能[接受]（https://meta.stackexchange.com/questions/5234/how-does-accepting-an-answer-work）吧，这样的问题不会留下未解。 – ImportanceOfBeingErnest