script/test/test24.py

@@ -0,0 +1,16 @@
+
+plots = None
+def plot_hist(data):
+    global plots    
+    (h,x) = histogram(data)     #(h,x) = histogram(data, 0, 255) is more efficient: no neet to calculate min & max
+    if plots is None:
+        plots = plot(h, xdata = x, title = "Histo")
+    else:
+       plots[0].getSeries(0).setData(x,h)
+
+while(True):
+    data = img.getData().getRectSelection(0,0,500,250)
+    plot_hist(data)
+    if plots[0].displayable == False: 
+        break
+    time.sleep(0.250)