Add a callback function update().

arabindo · Apr 8, 2020 · 0ef1a24 · 0ef1a24
1 parent da0e2a5
commit 0ef1a24
Showing 1 changed file with 12 additions and 1 deletion.
diff --git a/str.py b/str.py
@@ -29,10 +29,21 @@
 
 #set up widgets
 velocity = Slider(title="velocity", value=200000, start=-29999999, end=29999999, step=500)
-x_ra = Slider(title="X Range", value=xd, start=100, end=100000, step = 100)
 
 
 #set up call back
+def update(attrname, old, new):
+
+    #get currennt values
+    vy = velocity.value
+
+    #generate new x' and ct'
+    m = vy/c
+    xn = m*x
+    yn = x/m
+
+velocity.on_change('value', update)
+
 
 #set up layout
 inputs = column(velocity, x_ra)