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@@ -0,0 +1,68 @@
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+import numpy as np
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+import skfuzzy as fuzz
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+import matplotlib.pyplot as plt
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+#from mpl_toolkit.mplot3d import Axes3D
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+from skfuzzy import control as ctrl
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+import math
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+
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+x_qual = np.arange(0,11,1)
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+x_serv = np.arange(0,11,1)
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+x_tip = np.arange(0,26,1)
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+
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+quality = ctrl.Antecedent(x_qual,'quality')
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+service = ctrl.Antecedent(x_serv,'service')
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+tip = ctrl.Consequent(x_tip,'tip')
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+
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+quality['L']=fuzz.trimf(x_qual,[0,0,5])
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+quality['M']=fuzz.trimf(x_qual,[0,5,10])
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+quality['H']=fuzz.trimf(x_qual,[5,10,10])
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+
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+service['L']=fuzz.trimf(x_serv,[0,0,5])
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+service['M']=fuzz.trimf(x_serv,[0,5,10])
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+service['H']=fuzz.trimf(x_serv,[5,10,10])
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+
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+tip['L']=fuzz.trimf(x_tip,[0,0,13])
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+tip['M']=fuzz.trimf(x_tip,[0,13,25])
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+tip['H']=fuzz.trimf(x_tip,[13,25,25])
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+
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+quality.view()
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+service.view()
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+tip.view()
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+
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+tip.defuzzify_method='centroid'
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+
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+rule1=ctrl.Rule(antecedent=((quality['L']&service['L'])|(quality['L']&service['M'])|(quality['M']&service['L'])),consequent=tip['L'],label='Low')
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+rule2=ctrl.Rule(antecedent=((quality['M']&service['M'])|(quality['L']&service['H'])|(quality['H']&service['L'])),consequent=tip['M'],label='Medium')
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+rule3=ctrl.Rule(antecedent=((quality['M']&service['H'])|(quality['H']&service['M'])|(quality['H']&service['H'])),consequent=tip['H'],label='High')
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+#rule2.view()
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+tipping_ctrl = ctrl.ControlSystem([rule1,rule2,rule3])
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+tipping = ctrl.ControlSystemSimulation(tipping_ctrl)
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+
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+
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+tipping.input['quality']=2
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+tipping.input['service']=2
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+tipping.compute()
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+p=tipping.output['tip']
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+tip.view(sim=tipping)
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+print(p)
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+
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+
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+#upsampled = np.linspace(0,11,21)
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+#x,y=np.meshgrid(upsampled,upsampled)
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+#z=np.zeros_like(x)
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+#pp=[]
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+#for i in range(0,21):
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+# for j in range(0,21):
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+# tipping.input['quality']=x[i,j]
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+# tipping.input['service']=y[i,j]
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+# tipping.compute()
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+# z[i,j]=tipping.output['tip']
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+# pp.append(z[i,j])
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+#print('max:',max(pp))
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+#print('min:',min(pp))
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+
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+#fig = plt.figure(figsize=(8,8))
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+#ax = fig.add_subplot(111,projection='3d')
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+#surf = ax.plot_surface(x,y,z,rstride=1,cstride=1,cmap='viridis',linewidth=0.4,antialiased=True)
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+#ax.view_init(30,200)
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+plt.show()
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