Avoid divide by zero when rendering I/O utilization

It may happen to have it as max as 0
xrmx · Aug 22, 2010 · dbd7246 · dbd7246
1 parent a97cfb8
commit dbd7246
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/pybootchartgui/draw.py b/pybootchartgui/draw.py
@@ -205,6 +205,9 @@ def transform_point_coords(point, x_base, y_base, \
 
 	max_x = max (x for (x, y) in data)
 	max_y = max (y for (x, y) in data)
+	# avoid divide by zero when we render I/O utilization and max is 0
+	if max_y == 0:
+		max_y = 1.0
 	xscale = float (chart_bounds[2]) / max_x
 	yscale = float (chart_bounds[3]) / max_y