Sample data: Clear plots at redraw.

View/sample_data_tab.py

@@ -64,6 +64,7 @@ class SampleDataTab(QWidget):
         super().__init__()
 
         icon_folder = QIcon(os.path.join("icons", "folder.png"))
+        self._setup_attrs()
 
         ### --- General layout of widgets ---
 
@@ -257,6 +258,11 @@ class SampleDataTab(QWidget):
 
         self.combobox_PSD_plot.currentTextChanged.connect(self.plot_PSD_fine_and_sand_sediments)
 
+    def _setup_attrs(self):
+        self.figure_plot_sample_position_on_transect = None
+        self.figure_total_concentration = None
+        self.figure_plot_PSD = None
+
     # -------------------- Functions for Sample Data Tab --------------------
 
     def retranslate_data_sample_tab(self):
@@ -789,6 +795,9 @@ class SampleDataTab(QWidget):
         self.verticalLayout_groupbox_plot_transect\
             .removeWidget(self.canvas_plot_sample_position_on_transect)
 
+        if self.figure_plot_sample_position_on_transect is not None:
+            self.figure_plot_sample_position_on_transect.clear()
+
         fig, axis = plt.subplots(nrows=1, ncols=1, layout="constrained")
 
         self.figure_plot_sample_position_on_transect = fig
@@ -1414,6 +1423,9 @@ class SampleDataTab(QWidget):
             self.verticalLayout_groupbox_plot_total_concentration.removeWidget(self.canvas_plot_total_concentration)
             self.verticalLayout_groupbox_plot_total_concentration.removeWidget(self.toolbar_plot_total_concentration)
 
+            if self.figure_total_concentration is not None:
+                self.figure_total_concentration.clear()
+
             self.figure_total_concentration, self.axis_total_concentration \
                 = plt.subplots(nrows=1, ncols=1, layout="constrained")
             self.canvas_plot_total_concentration = FigureCanvas(self.figure_total_concentration)
@@ -1699,6 +1711,9 @@ class SampleDataTab(QWidget):
             self.verticalLayout_groupbox_plot_PSD.removeWidget(self.canvas_plot_PSD)
             self.verticalLayout_groupbox_plot_PSD.removeWidget(self.toolbar_plot_PSD)
 
+            if self.figure_plot_PSD is not None:
+                self.figure_plot_PSD.clear()
+
             self.figure_plot_PSD, self.axis_plot_PSD \
                 = plt.subplots(nrows=1, ncols=2, layout="constrained")
             self.canvas_plot_PSD = FigureCanvas(self.figure_plot_PSD)