Add some Python scripts for plotting functions

Python/Exponential/main.py

@@ -0,0 +1,20 @@
+import numpy as np
+from matplotlib import pyplot as plt 
+
+A = 100
+B = -0.2
+C = 0
+
+def f (x):
+    return A*np.exp(B*x) + C 
+
+def main ():
+    x = np.linspace(0,50,200)
+    y = f(x)
+
+    plt.grid()
+    plt.plot(x,y)
+    plt.show()
+
+if __name__ == "__main__":
+    main()

Python/Subfigure/main.py

@@ -0,0 +1,99 @@
+import sys
+import numpy as np
+import matplotlib.pyplot as plt
+
+def f1 (x):
+    return x
+
+def f2 (x):
+    return x*x
+
+def f3 (x):
+    return np.exp(x)
+
+def f4 (x):
+    return np.sqrt(x)
+
+def main ():
+    x1 = np.linspace(0,5,100)
+    y1 = f1(x1)
+
+    x2 = np.linspace(-2,2,100)
+    y2 = f2(x2)
+
+    x3 = np.linspace(0,5,100)
+    y3 = f3(x3)
+
+    x4 = np.linspace(0,5,100)
+    y4 = f4(x4)
+
+    figure, axes = plt.subplots(nrows=2,ncols=2)
+    ax = axes[0][0] 
+    ax.plot(x1,y1)
+    ax.set_title("Linear function")
+    ax.set_xlabel("x")
+    ax.set_ylabel("y")
+    ax.grid()
+
+    ax = axes[0][1] 
+    ax.plot(x2,y2)
+    ax.set_title("Quadratic function")
+    ax.set_xlabel("x")
+    ax.set_ylabel("y")
+    ax.grid()
+
+    ax = axes[1][0]
+    ax.plot(x3,y3)
+    ax.set_title("Exponetial function")
+    ax.set_xlabel("x")
+    ax.set_ylabel("y")
+    ax.grid()
+
+    ax = axes[1][1]
+    ax.plot(x4,y4)
+    ax.set_title("Non-linear function")
+    ax.set_xlabel("x")
+    ax.set_ylabel("y")
+    ax.grid()
+
+    # Set a padding between the figures
+    figure.tight_layout(pad=3.0)
+
+    #plt.show(figure)
+    plt.savefig("subfigures.pdf")
+
+
+if __name__ == "__main__":
+	main()
+
+'''
+# Alternative way ...
+    plt.subplot(221)
+    plt.title("Linear function")
+    plt.xlabel("x")
+    plt.ylabel("y")
+    plt.grid()
+    plt.plot(x1,y1)
+
+    plt.subplot(222)
+    plt.title("Quadratic function")
+    plt.xlabel("x")
+    plt.ylabel("y")
+    plt.grid()
+    plt.plot(x2,y2)
+
+    plt.subplot(223)
+    plt.title("Exponetial function")
+    plt.xlabel("x")
+    plt.ylabel("y")
+    plt.grid()
+    plt.plot(x3,y3)
+
+    plt.subplot(224)
+    plt.title("Non-linear function")
+    plt.xlabel("x")
+    plt.ylabel("y")
+    plt.grid()
+    plt.plot(x4,y4)
+
+'''