📜  PyQtGraph - 设置绘图窗口的最小高度

📅  最后修改于: 2022-05-13 01:54:56.888000             🧑  作者: Mango

PyQtGraph - 设置绘图窗口的最小高度

在本文中,我们将看到如何在 PyQtGraph 模块中设置绘图窗口的最小高度。 PyQtGraph 是一个用于Python的图形和用户界面库,它提供了设计和科学应用程序中通常需要的功能。它的主要目标是提供用于显示数据(绘图、视频等)的快速交互式图形,其次是提供帮助快速应用程序开发的工具(例如,Qt Designer 中使用的属性树)。绘图窗口包括两个主要部分:包含实际绘制图形的绘图面板和控制面板。默认情况下,绘图窗口是可调整大小的,用户可以随时调整其大小,通过设置最小高度,我们可以解决用户无法将高度降低到最小高度点以外的问题。

我们可以在下面给出的命令的帮助下创建一个绘图窗口

# creating a pyqtgraph plot window
window = pg.plot()

下面是实现

# importing pyqtgraph as pg
import pyqtgraph as pg
  
# importing QtCore and QtGui from the pyqtgraph module
from pyqtgraph.Qt import QtCore, QtGui
  
# importing numpy as np
import numpy as np
  
import time
  
# creating a pyqtgraph plot window
window = pg.plot()
  
# setting window geometry
# left = 100, top = 100
# width = 600, height = 500
window.setGeometry(100, 100, 600, 500)
  
# title
title = "GeeksforGeeks PyQtGraph"
  
# setting window title
window.setWindowTitle(title)
  
# create list for y-axis
y1 = [5, 5, 7, 10, 3, 8, 9, 1, 6, 2]
  
# create horizontal list i.e x-axis
x = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
  
# create pyqt5graph bar graph item 
# with width = 0.6
# with bar colors = green
bargraph1 = pg.BarGraphItem(x = x, height = y1, width = 0.6, brush ='g')
  
# add item to plot window
# adding bargraph item to the window
window.addItem(bargraph1)
  
# setting minimum height of the window
window.setMinimumHeight(300)
  
  
  
# main method
if __name__ == '__main__':
      
    # importing system
    import sys
      
    # Start Qt event loop unless running in interactive mode or using 
    if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'):
        QtGui.QApplication.instance().exec_()
         

输出 :
当我们尝试减小尺寸时,高度并没有缩小超过设定点