我对PyQt5很陌生。我希望有一个按钮,单击该按钮即可生成并显示图。我似乎无法找到一种方法来使用QPushButton成功调用PlotCanvas
函数。
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5 import QtWidgets, Qt
from matplotlib.figure import Figure
import matplotlib.pyplot as plt
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
import random
import numpy as np
import math
class GUI_Window(QtWidgets.QWidget):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
self.plot_button = QtWidgets.QPushButton(self)
self.plot_button.setText('Plot')
self.plot_button.setToolTip('Plots the function')
self.plot_button.move(50,240)
self.plot_button.clicked.connect(self.updater)
def updater(self):
PlotCanvas(self, inputparam=5)
print('Function has been called.')
即使我收到“函数已被调用”的打印输出,以上代码也不起作用(PlotCanvas
未绘出)。
但是,如果我仅在PlotCanvas
中调用initUI
,它将按预期方式绘制。
def initUI(self):
self.plot_button = QtWidgets.QPushButton(self)
self.plot_button.setText('Plot')
self.plot_button.setToolTip('Plots the function')
self.plot_button.move(50,240)
self.plot_button.clicked.connect(self.updater)
PlotCanvas(self, inputparam=5)
上面的代码按预期方式绘制了函数。
此外,如果我不带按钮(如下所示)简单地调用updater
函数,就会显示该图。
def initUI(self):
self.plot_button = QtWidgets.QPushButton(self)
self.plot_button.setText('Plot')
self.plot_button.setToolTip('Plots the function')
self.plot_button.move(50,240)
#self.plot_button.clicked.connect(self.updater)
self.updater()
def updater(self):
PlotCanvas(self, inputparam=5)
print('Function has been called.')
我感觉我不知道“自我”是如何工作的,通过传递点击信号,我某种程度上搞砸了。任何帮助/见解将不胜感激。
class PlotCanvas(FigureCanvas):
def __init__(self, parent=None, width=1.5, height=2, dpi=100, inputparam=0):
fig = Figure(figsize=(width, height), dpi=dpi)
self.axes = fig.add_subplot(111)
FigureCanvas.__init__(self, fig)
self.setParent(parent)
self.LLA_Plotter(inputparam)
# This function performs calculations and outputs x,y data points to plot
ax = self.figure.add_subplot(111)
for i in range(0,90):
ax.scatter(x[i], y[i], color='b', s=0.6)
ax.set_title('testing plot')
plt.show()