sohstationviewer/controller/plotting_data.py

@@ -249,3 +249,22 @@ def get_unit_bitweight(chan_db_info: Dict, bitweight_opt: str) -> str:
             else:
                 unit_bitweight = "{}%s" % unit
     return unit_bitweight
+
+
+def get_disk_size_format(value: float) -> str:
+    """
+    Break down unit in byte system.
+    :param value: size in KiB
+    :return: size with unit
+    """
+    size = value * 1024.
+    if size >= 1024. ** 4:
+        return "%.2fTiB" % (size / 1024. ** 4)
+    elif size >= 1024. ** 3:
+        return "%.2fGiB" % (size / 1024. ** 3)
+    elif size >= 1024. ** 2:
+        return "%.2fMiB" % (size / 1024. ** 2)
+    elif size >= 1024.:
+        return "%.2fKiB" % (size / 1024.)
+    else:
+        return "%dB" % size

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

sohstationviewer/view/plotting/plotting_widget/plotting_widget.py

@@ -21,7 +21,9 @@ from sohstationviewer.view.plotting.plotting_widget.plotting_axes import (
 from sohstationviewer.view.plotting.plotting_widget.plotting import Plotting
 from sohstationviewer.view.save_plot_dialog import SavePlotDialog
 
-from sohstationviewer.controller.plotting_data import format_time
+from sohstationviewer.controller.plotting_data import (
+    format_time, get_disk_size_format
+)
 from sohstationviewer.controller.util import display_tracking_info
 
 
@@ -329,7 +331,9 @@ class PlottingWidget(QtWidgets.QScrollArea):
                 display_tracking_info(self.tracking_box, "Point not found.")
                 return
             clicked_data = chan_data['data'][0][real_idx]
-            if hasattr(ax, 'unit_bw'):
+            if chan_id.startswith('Disk Usage'):
+                clicked_data = get_disk_size_format(clicked_data)
+            elif hasattr(ax, 'unit_bw'):
                 clicked_data = ax.unit_bw.format(clicked_data)
             formatted_clicked_time = format_time(
                 clicked_time, self.date_mode, 'HH:MM:SS')