reset tps_t after using to prevent bug when clicking on no point area

closes #275 (closed)

sohstationviewer/view/main_window.py

@@ -554,6 +554,9 @@ class MainWindow(QtWidgets.QMainWindow, UIMainWindow):
                 # each item.file_path is a rt130 das name for this case
                 self.selected_rt130_paths += self.rt130_das_dict[
                     item.file_path]
+            # Checking size of files using list of dir
+            self.list_of_dir = self.selected_rt130_paths
+
             if self.selected_rt130_paths == []:
                 msg = "No RT130s have been selected."
                 raise Exception(msg)