correct convert factor for Centaur's VPB

closes #159 (closed)

UPDATE Channels SET convertFactor=0.1 WHERE channel='VPB' AND dataType='Centaur'

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