linear regression finished

MainWindows.py

@@ -1,5 +1,5 @@
 import Ui_MainWindow
-from PyQt5.QtCore import QFile, QFileInfo, pyqtSlot, pyqtSignal
+from PyQt5.QtCore import QFile, QFileInfo, pyqtSlot, pyqtSignal, QIODevice
 from PyQt5 import QtGui, QtWidgets, QtCore
 from PyQt5.QtWidgets import QPushButton, QTableWidgetItem, QInputDialog, QLabel
 from PyQt5.QtGui import QIcon, QPixmap
@@ -7,6 +7,7 @@ from data_set_read import Data_Read
 import pandas as pd
 import openpyxl as pyx
 from libdataanalysis.LinearRegression.linear_regression import LinearRegression
+from PlotWindows import PlotWidget
 
 class MainWindows:
     def __init__(self) -> None:
@@ -23,6 +24,10 @@ class MainWindows:
         self.ui.progressBar_linear_regression.setValue(0)
         self.statusLable = QLabel("准备完成！")
         self.ui.statusbar.addWidget(self.statusLable, 1)
+        qss_file = QFile(":/qss/stypesheet.css")
+        if qss_file.open(QIODevice.OpenModeFlag.ReadOnly):
+            self.MainWindow.setStyleSheet(qss_file.readAll())
+        qss_file.close()
         
     def file_object_init(self):
         self.ui.pushButton_filepath.clicked.connect(self.pushButton_filepath_clicked)
@@ -31,6 +36,8 @@ class MainWindows:
         self.ui.pushButton_Kmeans.clicked.connect(lambda checked: self.ui.stackedWidget.setCurrentIndex(1))
         self.ui.actionNumber_Head.triggered.connect(self.action_Number_Head_triggered)
         self.ui.pushButton_linear_regression_begin.clicked.connect(self.pushButton_linear_regression_begin_clicked)
+        self.ui.pushButton_linear_regression_show.clicked.connect(self.pushButton_linear_regression_show_clicked)
+        self.ui.pushButton_linear_regression_save.clicked.connect(self.pushButton_linear_regression_save_clicked)
         
     def pushButton_filepath_clicked(self):
         file_path = QtWidgets.QFileDialog.getOpenFileName(self.MainWindow, "Open File", ".", "All Files(*);;csv Files(*.csv);;Old Excel Files(*.xls);;New Excel Files(*.xlsx)")
@@ -56,7 +63,9 @@ class MainWindows:
         if suffix == "csv":
             self.set_csv_headers(data_file.absoluteFilePath())
         elif suffix == "xlsx" or suffix == "xls":
-            self.set_excel_headers(data_file.absoluteFilePath())     
+            self.set_excel_headers(data_file.absoluteFilePath())  
+            
+       
         
     def set_excel_headers(self, file_path):
         wb = pyx.load_workbook(file_path)
@@ -115,9 +124,10 @@ class MainWindows:
             data = pd.read_csv(self.file_path)
         elif suffix == "xls" or suffix == "xlsx":
             data = pd.read_excel(self.file_path)
-        
-        x = data[self.ui.lineEdit_linear_regression_original.text().split(",")].values
-        y = data[self.ui.lineEdit_linear_regression_target.text()].values
+        train_data = data.sample(frac=self.ui.doubleSpinBox_linear_regression_train_percent.value())
+        self.test_data = train_data.drop(train_data.index)
+        x = train_data[self.ui.lineEdit_linear_regression_original.text().split(",")].values
+        y = train_data[self.ui.lineEdit_linear_regression_target.text()].values
         
         num_iterations = self.ui.spinBox_linear_regression_iter.value()
         learning_rate = self.ui.doubleSpinBox_linear_regression_rate.value()
@@ -130,6 +140,27 @@ class MainWindows:
             learning_rate,
             num_iterations
         )
-        msg = "开始损失: {:.2f},结束损失: {:.2f}".format(cost_history[0], cost_history[-1])
+        msg = "开始损失: {:.20f},结束损失: {:.20f}".format(cost_history[0], cost_history[-1])
+        self.statusLable.setText(msg)
+        self.draw_linear_regression_result(num_iterations, cost_history, "num_iterations", "cost_history")
         
-        self.statusLable.setText(msg)
+    def draw_linear_regression_result(self, num_iterations : int, cost_history : list, xlabel, ylabel):
+        num_iter_list = [i for i in range(num_iterations)]
+        self.plotwidget = PlotWidget(num_iter_list, cost_history, xlabel, ylabel)
+        self.plotwidget.show()
+        
+    def pushButton_linear_regression_show_clicked(self):
+        if self.plotwidget is not None:
+            self.plotwidget.show()
+            
+    def pushButton_linear_regression_save_clicked(self):
+        if self.plotwidget is not None:
+            dir_path = QtWidgets.QFileDialog.getExistingDirectory(self.MainWindow, "Chose Directory", ".")
+            if dir_path is not None:
+                self.plotwidget.save(dir_path)
+                
+    def statusLabel_black(self):
+        self.statusLable.setStyleSheet("color:black")
+    
+    def statusLabel_red(self):
+        self.statusLable.setStyleSheet("color:red")

PlotWindows.py

@@ -0,0 +1,42 @@
+from PyQt5.QtCore import Qt
+from PyQt5.QtWidgets import QApplication, QVBoxLayout, QWidget, QMainWindow
+from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
+from matplotlib.figure import Figure
+import matplotlib.pyplot as plt
+import sys
+from datetime import datetime
+
+class PlotWidget(QWidget):
+    # def __init__(self, parent: QWidget | None = ..., flags: Qt.WindowFlags | Qt.WindowType = ...) -> None:
+    #     super().__init__(parent, flags)
+    def __init__(self, scalex, scaley, xlabel, ylabel):
+        super().__init__()
+        self.scalex = scalex
+        self.scaley = scaley
+        self.xlabel = xlabel
+        self.ylabel = xlabel
+        self.fig = Figure()
+        self.ax = self.fig.add_subplot(111)
+        
+        # self.ax.plot(scalex=scalex, scaley=scaley)
+        self.ax.plot(scalex, scaley)
+        self.ax.set_xlabel(xlabel=xlabel)
+        self.ax.set_ylabel(ylabel=ylabel)
+        
+        self.canvas = FigureCanvas(self.fig)
+        
+        layout = QVBoxLayout()
+        layout.addWidget(self.canvas)
+        self.setLayout(layout)
+        
+        self.canvas.draw()
+            
+    def save(self, dir_path):
+        plt.figure()
+        plt.plot(self.scalex, self.scaley)
+        plt.xlabel(self.xlabel)
+        plt.ylabel(self.ylabel)
+        current_time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
+        plt.savefig(f"{dir_path}/{current_time}.png")
+        
+    

Test/data_show.ipynb

@@ -339,6 +339,27 @@
     "str = \"1111\"\n",
     "print(str.split(\",\"))"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 20,
+   "id": "8b12bd42",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "range(0, 100)"
+      ]
+     },
+     "execution_count": 20,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "range(100)"
+   ]
   }
  ],
  "metadata": {

qss/stypesheet.css

@@ -0,0 +1,2 @@
+/* stylesheet.css */
+

stylesheet.qrc

@@ -0,0 +1,5 @@
+<RCC>
+  <qresource prefix="/">
+    <file>qss/stypesheet.css</file>
+  </qresource>
+</RCC>