Correct RT130 disk usage display

closes #148 (closed)

sohstationviewer/view/plotting/plotting_widget/plotting_axes.py

@@ -9,7 +9,7 @@ from matplotlib.backends.backend_qt5agg import (
     FigureCanvasQTAgg as Canvas)
 
 from sohstationviewer.controller.plotting_data import (
-    get_time_ticks, get_unit_bitweight)
+    get_time_ticks, get_unit_bitweight, get_disk_size_format)
 
 from sohstationviewer.conf import constants
 from sohstationviewer.view.util.color import clr
@@ -299,6 +299,13 @@ class PlottingAxes:
         :param max_y: maximum of y values
         :param chan_db_info: info of channel from database
         """
+        if chan_db_info['channel'].startswith('Disk Usage'):
+            ax.set_yticks([org_min_y, org_max_y])
+            min_y_label = get_disk_size_format(org_min_y)
+            max_y_label = get_disk_size_format(org_max_y)
+            ax.set_yticklabels([min_y_label, max_y_label])
+            return
+
         if chan_db_info['channel'] == 'GPS Lk/Unlk':
             # to avoid case that the channel doesn't have Lk or Unlk
             # preset min, max value so that GPS Clock Power is always in the