68. PyQtChart 시계열 그래프

주식 데이터는 시계열 데이터이므로 그래프의 x축은 날짜와 시간을 표시합니다.

QtChart 에서 그래프의 x축을 시계열로 표현할 때 QDateTimeAxis 클래스를 사용합니다.

68-1 예제: ex67

import sys import FinanceDataReader as fdr import pyupbit as upbit from PyQt5.QtWidgets import QApplication, QMainWindow from PyQt5.QtChart import QChart, QChartView, QLineSeries, QDateTimeAxis, QValueAxis from PyQt5.QtGui import QPainter from PyQt5.QtCore import Qt class MyApp(QMainWindow):     def __init__(self):         super().__init__()         self.initUI()     def initUI(self):         # data 셀트리온 주가 지수         df = fdr.DataReader("068270", "2021")         series = QLineSeries()         for i in df.index:             series.append(i.timestamp() * 1000, df.loc[i]['Close'])         # chart         chart = QChart()         chart.legend().hide()         chart.addSeries(series)         # axis         axis_x = QDateTimeAxis()         axis_x.setFormat('MM/dd')         chart.addAxis(axis_x, Qt.AlignBottom)         series.attachAxis(axis_x)         axis_y = QValueAxis()         axis_y.setLabelFormat('%i')         chart.addAxis(axis_y, Qt.AlignLeft)         series.attachAxis(axis_y)         # margin         chart.layout().setContentsMargins(0, 0, 0, 0)         # displaying chart         chart_view = QChartView(chart)         chart_view.setRenderHint(QPainter.Antialiasing)         # displaying window         self.setCentralWidget(chart_view)         self.setMinimumSize(800, 600)         self.setWindowTitle("QtChart TimeLine")         self.show() if __name__ == "__main__":     app = QApplication(sys.argv)     win = MyApp()     sys.exit(app.exec_())

68-2 결과

68-3 예제: 비트코인

import sys import FinanceDataReader as fdr import pyupbit import pyupbit as upbit from PyQt5.QtWidgets import QApplication, QMainWindow from PyQt5.QtChart import QChart, QChartView, QLineSeries, QDateTimeAxis, QValueAxis from PyQt5.QtGui import QPainter from PyQt5.QtCore import Qt class MyApp(QMainWindow):     def __init__(self):         super().__init__()         self.initUI()     def initUI(self):         # data 셀트리온 주가 지수         # df = fdr.DataReader("068270", "2021")         df = pyupbit.get_ohlcv("KRW-BTC", "2021")         series = QLineSeries()         for i in df.index:             series.append(i.timestamp() * 1000, df.loc[i]['close'])         # chart         chart = QChart()         chart.legend().hide()         chart.addSeries(series)         # axis         axis_x = QDateTimeAxis()         axis_x.setFormat('MM/dd')         chart.addAxis(axis_x, Qt.AlignBottom)         series.attachAxis(axis_x)         axis_y = QValueAxis()         axis_y.setLabelFormat('%i')         chart.addAxis(axis_y, Qt.AlignLeft)         series.attachAxis(axis_y)         # margin         chart.layout().setContentsMargins(0, 0, 0, 0)         # displaying chart         chart_view = QChartView(chart)         chart_view.setRenderHint(QPainter.Antialiasing)         # displaying window         self.setCentralWidget(chart_view)         self.setMinimumSize(800, 600)         self.setWindowTitle("QtChart TimeLine")         self.show() if __name__ == "__main__":     app = QApplication(sys.argv)     win = MyApp()     sys.exit(app.exec_())

68-4 결과