GraphicsLayoutWidget 绘图

Posted 2021-05-25 wuyuan2011woaini

pyqtgraph_pyqt.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>800</width>
    <height>600</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <widget class="GraphicsLayoutWidget" name="pyqtgraph1" native="true">
    <property name="geometry">
     <rect>
      <x>10</x>
      <y>10</y>
      <width>721</width>
      <height>251</height>
     </rect>
    </property>
   </widget>
   <widget class="GraphicsLayoutWidget" name="pyqtgraph2" native="true">
    <property name="geometry">
     <rect>
      <x>10</x>
      <y>290</y>
      <width>501</width>
      <height>281</height>
     </rect>
    </property>
   </widget>
  </widget>
  <widget class="QMenuBar" name="menubar">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>800</width>
     <height>22</height>
    </rect>
   </property>
  </widget>
  <widget class="QStatusBar" name="statusbar"/>
 </widget>
 <customwidgets>
  <customwidget>
   <class>GraphicsLayoutWidget</class>
   <extends>QWidget</extends>
   <header>pyqtgraph</header>
   <container>1</container>
  </customwidget>
 </customwidgets>
 <resources/>
 <connections/>
</ui>

pyqtgraph_pyqt.py

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file \'pyqtgraph_pyqt.ui\'
#
# Created by: PyQt5 UI code generator 5.9.2
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pyqtgraph1 = GraphicsLayoutWidget(self.centralwidget)
        self.pyqtgraph1.setGeometry(QtCore.QRect(10, 10, 721, 251))
        self.pyqtgraph1.setObjectName("pyqtgraph1")
        self.pyqtgraph2 = GraphicsLayoutWidget(self.centralwidget)
        self.pyqtgraph2.setGeometry(QtCore.QRect(10, 290, 501, 281))
        self.pyqtgraph2.setObjectName("pyqtgraph2")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 22))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))

from pyqtgraph import GraphicsLayoutWidget

Graph.py

\'\'\'

使用PyQtGraph绘图

pip Install pyqtgraph
\'\'\'


from PyQt5.QtCore import pyqtSlot
from PyQt5.QtWidgets import QMainWindow, QApplication
import pyqtgraph as pg
from pyqtgraph_pyqt import Ui_MainWindow
import numpy as np



class MainWindow(QMainWindow, Ui_MainWindow):

    def __init__(self, parent=None):

        super(MainWindow, self).__init__(parent)

        pg.setConfigOption(\'background\', \'#f0f0f0\')
        pg.setConfigOption(\'foreground\', \'d\')


        self.setupUi(self)
        self.draw1()
        self.draw2()


    def draw1(self):

        self.pyqtgraph1.clear()

        \'\'\'第一种绘图方式\'\'\'
        print(np.random.normal(size=120))
        self.pyqtgraph1.addPlot(title="绘图单条线", y=np.random.normal(size=120), pen=pg.mkPen(color=\'b\', width=2))

        \'\'\'第二种绘图方式\'\'\'
        plt2 = self.pyqtgraph1.addPlot(title=\'绘制多条线\')

        plt2.plot(np.random.normal(size=150), pen=pg.mkPen(color=\'r\', width=2),
                  name="Red curve")
        plt2.plot(np.random.normal(size=110) + 5, pen=(0, 255, 0), name="Green curve")
        plt2.plot(np.random.normal(size=120) + 10, pen=(0, 0, 255), name="Blue curve")

    def draw2(self):


        plt = self.pyqtgraph2.addPlot(title=\'绘制条状图\')
        x = np.arange(10)
        print(x)
        y1 = np.sin(x)
        y2 = 1.1 * np.sin(x + 1)
        y3 = 1.2 * np.sin(x + 2)

        bg1 = pg.BarGraphItem(x=x, height=y1, width=0.3, brush=\'r\')
        bg2 = pg.BarGraphItem(x=x + 0.33, height=y2, width=0.3, brush=\'g\')
        bg3 = pg.BarGraphItem(x=x + 0.66, height=y3, width=0.3, brush=\'b\')

        plt.addItem(bg1)
        plt.addItem(bg2)
        plt.addItem(bg3)

        self.pyqtgraph2.nextRow()

        p4 = self.pyqtgraph2.addPlot(title="参数图+显示网格")
        x = np.cos(np.linspace(0, 2 * np.pi, 1000))
        y = np.sin(np.linspace(0, 4 * np.pi, 1000))
        p4.plot(x, y, pen=pg.mkPen(color=\'d\', width=2))
        #p4.showGrid(x=True, y=True)  # 显示网格


if __name__ == "__main__":
    import sys

    app = QApplication(sys.argv)
    ui = MainWindow()
    ui.show()
    sys.exit(app.exec_())