Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
263 views
in Technique[技术] by (71.8m points)

python - Change combobox option to modificate graphic/chart

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()

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

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()

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...