线和条形图示例¶

该示例展示了如何组合不同的图表并设置坐标轴。
在示例中，我们将折线图与柱状图结合，并使用类别轴作为两者的共同轴。
下载这个示例
lineandbar.py
# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
from __future__ import annotations

"""PySide6 port of the line/bar example from Qt v5.x"""

import sys
from PySide6.QtCore import QPoint, Qt
from PySide6.QtGui import QPainter
from PySide6.QtWidgets import QMainWindow, QApplication
from PySide6.QtCharts import (QBarCategoryAxis, QBarSeries, QBarSet, QChart,
                              QChartView, QLineSeries, QValueAxis)


class TestChart(QMainWindow):
    def __init__(self):
        super().__init__()

        self.set0 = QBarSet("Jane")
        self.set1 = QBarSet("John")
        self.set2 = QBarSet("Axel")
        self.set3 = QBarSet("Mary")
        self.set4 = QBarSet("Sam")

        self.set0.append([1, 2, 3, 4, 5, 6])
        self.set1.append([5, 0, 0, 4, 0, 7])
        self.set2.append([3, 5, 8, 13, 8, 5])
        self.set3.append([5, 6, 7, 3, 4, 5])
        self.set4.append([9, 7, 5, 3, 1, 2])

        self._bar_series = QBarSeries()
        self._bar_series.append(self.set0)
        self._bar_series.append(self.set1)
        self._bar_series.append(self.set2)
        self._bar_series.append(self.set3)
        self._bar_series.append(self.set4)

        self._line_series = QLineSeries()
        self._line_series.setName("trend")
        self._line_series.append(QPoint(0, 4))
        self._line_series.append(QPoint(1, 15))
        self._line_series.append(QPoint(2, 20))
        self._line_series.append(QPoint(3, 4))
        self._line_series.append(QPoint(4, 12))
        self._line_series.append(QPoint(5, 17))

        self.chart = QChart()
        self.chart.addSeries(self._bar_series)
        self.chart.addSeries(self._line_series)
        self.chart.setTitle("Line and barchart example")

        self.categories = ["Jan", "Feb", "Mar", "Apr", "May", "Jun"]
        self._axis_x = QBarCategoryAxis()
        self._axis_x.append(self.categories)
        self.chart.addAxis(self._axis_x, Qt.AlignBottom)
        self._line_series.attachAxis(self._axis_x)
        self._bar_series.attachAxis(self._axis_x)
        self._axis_x.setRange("Jan", "Jun")

        self._axis_y = QValueAxis()
        self.chart.addAxis(self._axis_x, Qt.AlignLeft)
        self._line_series.attachAxis(self._axis_y)
        self._bar_series.attachAxis(self._axis_y)
        self._axis_y.setRange(0, 20)

        self.chart.legend().setVisible(True)
        self.chart.legend().setAlignment(Qt.AlignBottom)

        self._chart_view = QChartView(self.chart)
        self._chart_view.setRenderHint(QPainter.RenderHint.Antialiasing)

        self.setCentralWidget(self._chart_view)


if __name__ == "__main__":
    app = QApplication(sys.argv)

    window = TestChart()
    window.show()
    window.resize(440, 300)

    sys.exit(app.exec())