diff --git a/demo2.py b/demo2.py
new file mode 100644
index 0000000..bf0d05e
--- /dev/null
+++ b/demo2.py
@@ -0,0 +1,38 @@
+from nnnar import *
+from knn import *
+import matplotlib.pyplot as plt
+from random import *
+
+knn = Knn()
+nnnar = Nnnar(1, 0, 1000, 10)
+
+def getRandomParam():
+    return [random()*10-5, random()*10-5,random()*10-5]
+
+def applyFunction(x,param):
+    return pow(x*param[0],2) + x*param[1] + param[2]
+
+
+param = getRandomParam()
+nbPoints = 100
+minx = 0
+maxx = 10
+x = []
+y = []
+
+for i in [minx + (maxx-minx)*i/nbPoints for i in range(nbPoints)]:
+    x.append(i)
+    y.append(applyFunction(i,param))
+    knn.addPoint(np.array([i]),np.array([y[-1]]))
+    nnnar.addPoint(np.array([i]),np.array([y[-1]]))
+
+
+nbInfer = 20
+for i in range(nbInfer):
+    xt = random()*10
+    yt = nnnar.getValueOfPoint(np.array([xt]),2)
+    plt.plot(xt,yt[0],'xr')
+
+
+plt.plot(x,y)
+plt.show()
\ No newline at end of file
diff --git a/knn.py b/knn.py
index 329edbc..943d30f 100644
--- a/knn.py
+++ b/knn.py
@@ -43,12 +43,4 @@ class Knn:
                 distance[maxDistIdx] = dist[i]
                 maxDistIdx = np.argmax(distance)
         return found, distance
-    
-
-
-k = Knn()
-
-k.addPoint(np.array([1, 0.8,1.5]), [0.2,0.5])
-k.addPoint(np.array([0.2, 1.8,1.2]), [0.4,0.7])
-
-print(k.getValueOfPoint(np.array([1, 0.8, 1.5]), 2))
\ No newline at end of file
+    
\ No newline at end of file
diff --git a/3nar.py b/nnnar.py
similarity index 94%
rename from 3nar.py
rename to nnnar.py
index c33b45c..b279f6f 100644
--- a/3nar.py
+++ b/nnnar.py
@@ -71,11 +71,3 @@ class Nnnar:
         coord = coord / self.unit
         coord = np.floor(coord).astype(int)
         return coord
-
-
-n = Nnnar(3, 0, 3, 2)
-
-n.addPoint(np.array([1, 0.8,1.5]), [0.2,0.5])
-n.addPoint(np.array([0.2, 1.8,1.2]), [0.4,0.7])
-
-print(n.getValueOfPoint(np.array([1, 0.8, 1.5]), 2))
\ No newline at end of file