问题
I'm using PyQt5 to build up a user interface to show up data from "curve_fit" method.
As the data which I'm working can have discontinuities, my return from the method is divided on curve slices.
My GUI is composed by two graphs and one combo box. The function of the combo box is to enable the user to choose which slice the chart will show. Although the event of the combo box is working, my charts still the same, without any modification.
main.py
import sys
from PyQt5 import QtWidgets
import numpy as np
from mainwindow import Ui_MainWindow
class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self,
initial_curve_x_value, initial_curve_y_value,
fit_curve_x_value_list, fit_curve_y_value_list,
fit_curve_error_value_list, fit_curve_zero_list,
fit_parameter_list, fit_square_R_list,
parent=None):
super(MainWindow, self).__init__(parent)
self.setupUi(self)
self.initial_curve_x_value = initial_curve_x_value
self.initial_curve_y_value = initial_curve_y_value
self.fit_curve_x_value_list = fit_curve_x_value_list
self.fit_curve_y_value_list = fit_curve_y_value_list
self.fit_curve_error_value_list = fit_curve_error_value_list
self.fit_curve_zero_list = fit_curve_zero_list
self.fit_parameter_list = fit_parameter_list
self.fit_square_R_list = fit_square_R_list
rangecombobox = len(fit_square_R_list)
itenscombobox = ["Slice " + str(i+1) for i in range(rangecombobox)]
self.combobox.addItems(itenscombobox)
#setting as initial value in chart as the first slice
initial = 0
x_test = self.initial_curve_x_value[initial]
y_test = self.initial_curve_y_value[initial]
x2_test = self.fit_curve_x_value_list[initial]
y2_test = self.fit_curve_y_value_list[initial]
error_y = self.fit_curve_error_value_list[initial]
zero_y = self.fit_curve_zero_list[initial]
self.static_ax1.plot(x_test, y_test)
self.static_ax1.plot(x2_test, y2_test)
self.static_ax2.plot(x2_test, error_y)
self.static_ax2.plot(x2_test, zero_y)
self.combobox.currentIndexChanged.connect(self.changePlot)
def changePlot(self):
combobox_index = self.combobox.currentIndex()
self.static_ax1.clear()
self.static_ax2.clear()
#updating the values
x_test = self.initial_curve_x_value[combobox_index]
y_test = self.initial_curve_y_value[combobox_index]
x2_test = self.fit_curve_x_value_list[combobox_index]
y2_test = self.fit_curve_y_value_list[combobox_index]
error_y = self.fit_curve_error_value_list[combobox_index]
zero_y = self.fit_curve_zero_list[combobox_index]
#updating the charts
self.static_ax1.plot(x_test, y_test)
self.static_ax1.plot(x2_test, y2_test)
self.static_ax2.plot(x2_test, error_y)
self.static_ax2.plot(x2_test, zero_y)
x1_1 = [i for i in range(10)]
x1_1 = np.array(x1_1)
x1_2 = [i for i in range(10, 20,1)]
x1_2 = np.array(x1_2)
y1_1 = [i for i in range(10, 20,1)]
y1_1 = np.array(y1_1)
y1_2 = [i for i in range(20, 30,1)]
y1_2 = np.array(y1_2)
y1_3 = [i for i in range(30, 40,1)]
y1_3 = np.array(y1_3)
y1_4 = [i for i in range(40, 50,1)]
y1_4 = np.array(y1_4)
y1_5 = [i for i in range(20, 30,1)]
y1_5 = np.array(y1_5)
y1_6 = [i for i in range(30, 40,1)]
y1_6 = np.array(y1_6)
initial_curve_x_value = []
initial_curve_x_value.append(x1_1)
initial_curve_x_value.append(x1_2)
initial_curve_y_value = []
initial_curve_y_value.append(y1_1)
initial_curve_y_value.append(y1_2)
fit_curve_x_value_list = []
fit_curve_x_value_list.append(x1_1)
fit_curve_x_value_list.append(x1_2)
fit_curve_y_value_list = []
fit_curve_y_value_list.append(y1_3)
fit_curve_y_value_list.append(y1_4)
fit_curve_error_value_list = []
fit_curve_error_value_list.append(y1_5)
fit_curve_error_value_list.append(y1_6)
fit_curve_zero_list = []
zero = np.zeros(10)
fit_curve_zero_list.append(zero)
fit_curve_zero_list.append(zero)
fit_parameter_list = [[1, 2, 4], [2,3]]
fit_square_R_list = [0.99, 0.98]
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
mw = MainWindow(initial_curve_x_value, initial_curve_y_value,
fit_curve_x_value_list, fit_curve_y_value_list,
fit_curve_error_value_list, fit_curve_zero_list,
fit_parameter_list, fit_square_R_list
)
mw.show()
sys.exit(app.exec_())
mainwindow.py
from PyQt5 import QtWidgets
from PyQt5.QtWidgets import QLabel, QComboBox
from PyQt5.QtCore import QRect
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg
from matplotlib.figure import Figure
import sys
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
length_window = 1200
height_window = 1200
MainWindow.setObjectName("MainWindow")
MainWindow.resize(length_window, height_window)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.combobox = QComboBox(MainWindow)
self.combobox.setGeometry(QRect(900, 80, 250, 40))
self.chart1 = QtWidgets.QWidget(MainWindow)
self.chart1.setGeometry(QRect(50, 50, 800, 400))
self.layout_chart1 = QtWidgets.QVBoxLayout(self.chart1)
self.static_canvas1 = FigureCanvasQTAgg(Figure(figsize=(8,4)))
self.layout_chart1.addWidget(self.static_canvas1)
self.chart2 = QtWidgets.QWidget(MainWindow)
self.chart2.setGeometry(QRect(50, 450, 800, 400))
self.layout_chart2 = QtWidgets.QVBoxLayout(self.chart2)
self.static_canvas2 = FigureCanvasQTAgg(Figure(figsize=(8,4)))
self.layout_chart2.addWidget(self.static_canvas2)
self.static_ax1 = self.static_canvas1.figure.subplots()
self.static_ax2 = self.static_canvas2.figure.subplots()
回答1:
You have to use the draw() method of the canvas to update the painting:
def changePlot(self):
# ...
self.static_ax2.plot(x2_test, error_y)
self.static_ax2.plot(x2_test, zero_y)
self.static_canvas1.draw()
self.static_canvas2.draw()来源：https://stackoverflow.com/questions/63103061/change-combobox-option-to-modificate-graphic-chart