New ScreenPanel

script/test21.py

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+from mathutils import *
+
+#interpolation
+y = [0, 1, 4,10,50,25,12, 5, 3, 0] 
+x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+types = "linear", "cubic",  "akima", "loess", "neville", "newton"
+functions = [interpolate(y,x,t) for t in types]
+
+plot_x = frange (0,9,0.01)
+values = [get_values(f,plot_x) for f in functions]
+plots=plot(values,types,plot_x)
+
+#derivative
+for i in range(len(types)):
+    try:
+        d = deriv(functions[i])
+        plots[i].addSeries(LinePlotSeries("Derivative"))
+        plots[i].getSeries(1).setData(plot_x, get_values(d,plot_x))    
+    except:
+        #not differentiable
+        pass
+
+#integration
+for i in range(len(types)):
+    s = integrate(functions[i],x)
+    plots[i].addMarker(x[-1], None, "Integral=" + str(round(s,4)), java.awt.Color.DARK_GRAY)
+
+
+
+
+#Direct calculation on arrays:
+
+print "Deriv (linear interpolation): ", deriv(y,x)
+print "Deriv (cubic interpolation): ", deriv(y, x, "cubic")
+print "Integral (linear interpolation): ", integrate(y, None, x, "cubic")
+print "Integral (cubic interpolation): ", integrate(y, None, x, "cubic")
+print "Integral (linear interpolation in range [1,5]): ", integrate(y, [1,5], x)