氣輕PyQt5 37 Qchart顯示數(shù)據(jù)點(diǎn)坐標(biāo)值 (setPointLabelsVisible)
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from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtChart import QSplineSeries, QLineSeries, QChart, QChartView, QValueAxis, QBarCategoryAxis
from math import ceil
import sys
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class PyQt537(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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??????? spline = QSplineSeries()??????????????????????? # 樣條曲線
??????? for i, value in enumerate(gdpData):
??????????? spline.append(i, value)
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??????? spline.setName("2018年部分城市GDP")
??????? spline.setColor(Qt.blue)
??????? spline.setPointsVisible(True)?????????????????? # 數(shù)據(jù)點(diǎn)可視
??????? spline.setPointLabelsVisible(True)???????????? ?# 數(shù)據(jù)點(diǎn)坐標(biāo)可視
??????? spline.setPointLabelsFormat("(@xPoint, @yPoint)")
??????? spline.setPointLabelsFont(QFont(None, 6))
??????? spline.setPointLabelsColor(Qt.darkBlue)
???????????????
??????? chart.addSeries(spline)???????????????????????? # 添加Series
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??? ????axis_x = QBarCategoryAxis()???????????????????? # 柱狀圖坐標(biāo)
??????? axis_x.append(cityName)
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??????? axis_x.setTitleText("城市")
??????? chart.addAxis(axis_x, Qt.AlignBottom)
??????? spline.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)
??????? spline.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 = PyQt537()
??? sys.exit(app.exec())
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執(zhí)行結(jié)果
