some prototypes

prototypes/stream-bokeh.py

@@ -0,0 +1,39 @@
+#!/usr/bin/env python
+
+from time import sleep
+from random import random
+from bokeh.plotting import curdoc, figure
+from bokeh.models import ColumnDataSource
+
+data = {
+    "x": [0, 1, 2, 3, 4],
+    "y": [6, 7, 2, 3, 5]
+}
+
+i = len(data["x"])
+
+source = ColumnDataSource(data=data)
+
+p = figure()
+p.line(x="x", y="y", source=source)
+
+
+def update():
+    global i
+    i += 1
+
+    new = {
+        "x": [i],
+        "y": [random()*10]
+    }
+
+    source.stream(new, rollover=50)
+
+
+
+doc = curdoc()
+doc.add_periodic_callback(update, 500)
+doc.add_root(p)
+
+
+