Be fault tolerant

power_plot.py

@@ -109,7 +109,11 @@ class PowerPlotMainWindow(QMainWindow):
         # Get metadata and ignore it
         header_lines = []
         while True:
+            # TODO: this is blocking and freezes the UI, could
+            # be refactored to use the QT notification mechanism
             line = sys.stdin.readline()
+            if len(line.strip()) == 0:
+                continue
             header_lines.append(line)
             if line[0] != "#":
                 column_names = [name.strip() for name in line.split()]
@@ -163,6 +167,10 @@ class PowerPlotMainWindow(QMainWindow):
                 continue
             self.output_counter += 1
             values = line.split(",")
+            if not values[0][0].isnumeric():
+                print("Skipping line: " + line.strip())
+                print(values[0], values[0].isnumeric())
+                continue
             time_now = float(values[0])
             power_now = float(values[self.col_num])