氣輕PyQt5 39 QChart柱狀圖(QBarSet)
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在【氣輕Python34】采用matplotlib制作過同樣數(shù)據(jù)的柱狀圖。
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from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtChart import QBarSeries, QBarSet, QChart, QChartView, QValueAxis, QBarCategoryAxis
from math import ceil
import sys
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class PyQt539(QMainWindow):
??? def __init__(self):
??????? super().__init__()
??????? self.initUI()
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??? def initUI(self):
??????? self.setWindowTitle("chart")
??????? self.resize(600, 400)?????????????????????????? # 設(shè)置窗口大小
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??????? cityName = ['北京', '天津', '上海', '南京', '杭州', '青島', '廣州', '深圳', '重慶', '成都']
??????? gdpData? = [30319.98, 18809.64, 32679.87, 12820.4, 13509.15,
??????????????????? 12001.52, 22859.35, 24221.98, 20363.19, 15342.77]
??????? MaxGDP = ceil(max(gdpData)/9)*10
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??????? chart = QChart()??????????????????????????????? # 圖表組件
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??????? pen = QPen(QColor('#8B000'),3)????????????????? # 曲線顏色
??????? GDPBar = QBarSet('2018年部分城市GDP')
??????? for i, value in enumerate(gdpData):
??????????? GDPBar.append(value)
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??????? barSeries = QBarSeries()
??????? barSeries.append(GDPBar)
??????? chart.addSeries(barSeries)
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??????? axis_x = QBarCategoryAxis()??????????????? ?????# 柱狀圖坐標
??????? axis_x.append(cityName)
??????? axis_x.setLinePen(pen)????????????????????????? # 設(shè)置X軸顏色和寬度
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??????? axis_x.setTitleText("城市")
??????? chart.addAxis(axis_x, Qt.AlignBottom)
??????? barSeries.attachAxis(axis_x)
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??????? axis_y = QValueAxis()
??????? axis_y.setLabelFormat("%d")
??????? axis_y.setRange(0, MaxGDP)
??????? axis_y.setTitleText("億元")
??????? chart.addAxis(axis_y, Qt.AlignLeft)
??????? axis_y.setLinePen(pen)????????????????????????? # 設(shè)置Y軸顏色和寬度
??????? barSeries.attachAxis(axis_y)
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??????? chartView = QChartView()??????????????????????? # 視圖組件
??????? chartView.setChart(chart)?????????????????????? # 顯示chart
???????
??????? self.setCentralWidget(chartView)
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??????? self.show()
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if __name__ == '__main__':
??? app = QApplication(sys.argv)
??? window = PyQt539()
??? sys.exit(app.exec())
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執(zhí)行結(jié)果
