QLineChart_problem.py

from PyQt6 import QtCore, QtGui, QtWidgets
from PyQt6.QtCharts import QChart, QChartView, QLineSeries, QValueAxis
import sys

class Ui_MainWindow(QtWidgets.QMainWindow):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("Trouble LineChart")
        self.setGeometry(100,100, 680,500)
        self.array_medias = [28.284563290387887, 28.170853249077403, 28.776281519708895, 29.041099232443074, 29.232627358676552]
        self.array_maximas = [33.4762780011805, 33.4762780011805, 33.61541095358507, 33.929353828043304, 33.929353828043304]
        self.array_minimas = [20.46583000704794, 20.288281209883735, 20.772403295556217, 21.20685421472882, 21.625995561649745]

        self.show()
        self.loadChart()

    def loadChart(self):

        self.series_media = QLineSeries()
        self.series_maxima = QLineSeries()
        self.series_minima = QLineSeries()

        self.loadSerie_media()
        self.loadSerie_maxima()
        self.loadSerie_minima()

        y_axis = QValueAxis()
        y_axis.setRange(24.0, 40.0)
        y_axis.setLabelFormat("%0.1f")
        y_axis.setTickType(QValueAxis.TickType.TicksDynamic)
        y_axis.setTickInterval(0.5)
        y_axis.setTitleText("Temperaturas")

        x_axis = QValueAxis()
        x_axis.setRange(1, len(self.array_medias))
        x_axis.setLabelFormat("%d")
        y_axis.setTickType(QValueAxis.TickType.TicksDynamic)
        y_axis.setTickInterval(1)
        x_axis.setTitleText("Exames")
        
        chart = QChart()
        chart.addAxis(x_axis, QtCore.Qt.AlignmentFlag.AlignBottom)
        chart.addAxis(y_axis, QtCore.Qt.AlignmentFlag.AlignLeft)
        chart.legend().setVisible(True)
        chart.addSeries(self.series_media)
        chart.addSeries(self.series_maxima)
        chart.addSeries(self.series_minima)
        #chart.createDefaultAxes()
        
        self.chartView = QChartView(chart)
        self.chartView.setGeometry(QtCore.QRect(100, 100, 680, 500))
        self.chartView.setRenderHint(QtGui.QPainter.RenderHint.Antialiasing)
        self.setCentralWidget(self.chartView)

    def loadSerie_media(self):
        for index, element in enumerate(self.array_medias): 
            image_num = index + 1  
            self.series_media.append(image_num, element)
        self.series_media.setName('Temperatura Média')

    def loadSerie_maxima(self):
        for index, element in enumerate(self.array_maximas):
            image_num = index + 1
            self.series_maxima.append(image_num, element)
        self.series_maxima.setName('Temperatura Máxima')

    def loadSerie_minima(self):
        for index, element in enumerate(self.array_minimas):
            image_num = index + 1
            self.series_minima.append(image_num, element)
        self.series_minima.setName('Temperatura Minima')  

App = QtWidgets.QApplication(sys.argv)
window = Ui_MainWindow()
sys.exit(App.exec())