solving tps title always shows a time range of 1970-01-01 - 1970-01-01

sohstationviewer/view/plotting/time_power_square/time_power_squared_dialog.py

@@ -51,6 +51,12 @@ class TimePowerSquaredDialog(QtWidgets.QWidget):
          date_format: format for date
         """
         self.date_format: str = 'YYYY-MM-DD'
+        """
+        min_x: left limit of data plotted
+        max_x: right limit of data plotted
+        """
+        self.min_x: float = 0
+        self.max_x: float = 0
 
         self.setWindowTitle("TPS Plot")
 
@@ -294,10 +300,10 @@ class TimePowerSquaredDialog(QtWidgets.QWidget):
         :param end_tm: requested end time to read
         """
         self.processing_log_msg = ""
-        min_x = max(d_obj.data_time[data_set_id][0], start_tm)
-        max_x = min(d_obj.data_time[data_set_id][1], end_tm)
+        self.min_x = max(d_obj.data_time[data_set_id][0], start_tm)
+        self.max_x = min(d_obj.data_time[data_set_id][1], end_tm)
         self.start_5mins_of_diff_days = get_start_5mins_of_diff_days(
-            min_x, max_x)
+            self.min_x, self.max_x)
         for i in range(self.plotting_tab.count() - 1, -1, -1):
             # delete all tps tabs
             widget = self.plotting_tab.widget(i)
@@ -338,4 +344,5 @@ class TimePowerSquaredDialog(QtWidgets.QWidget):
         self.plotting_tab.addTab(tps_widget, tab_name)
         self.tps_widget_dict[tab_name] = tps_widget
         tps_widget.plot_channels(
-            data_dict, data_set_id, self.start_5mins_of_diff_days)
+            data_dict, data_set_id, self.start_5mins_of_diff_days,
+            self.min_x, self.max_x)

sohstationviewer/view/plotting/time_power_square/time_power_squared_widget.py

@@ -102,17 +102,22 @@ class TimePowerSquaredWidget(plotting_widget.PlottingWidget):
 
     def plot_channels(self, data_dict: Dict,
                       data_set_id: Union[str, Tuple[str, str]],
-                      start_5mins_of_diff_days: List[List[float]]):
+                      start_5mins_of_diff_days: List[List[float]],
+                      min_x: float, max_x: float):
         """
         Recursively plot each TPS channels for waveform_data.
         :param data_dict: dict of all channels to be plotted
         :param data_set_id: data set's id
         :param start_5mins_of_diff_days: the list of starts of all five minutes
             of days in which each day has 288 of 5 minutes.
+        :param min_x: left limit of data plotted
+        :param max_x: right limit of data plotted
         """
         self.zoom_marker1_shown = False
         self.is_working = True
         self.plotting_data1 = data_dict
+        self.min_x = min_x
+        self.max_x = max_x
         self.plot_total = len(self.plotting_data1)
         self.fig_height_in = self.init_fig_height_in()
         self.start_5mins_of_diff_days = start_5mins_of_diff_days