graphics: Drawing Laplace

code/plots/laplace-adj-graph.py

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+#!/usr/bin/env python3
+
+import numpy as np
+from matplotlib import pyplot as plt
+from scipy.stats import laplace
+
+plt.rc('font', family='serif')
+plt.rc('font', size=10)
+plt.rc('text', usetex=True)
+
+x = np.arange(0.0, 6.0, 0.01)
+
+# Draw the first laplace distribution.
+plt.plot(x,\
+         laplace.pdf(x, loc=2.0, scale=1.0),\
+         label=r'$\textrm{Laplace}(2, 1)$',\
+         color='#009874')
+
+# # Draw the second laplace distribution.
+# plt.plot(x,\
+#          laplace.pdf(x, loc=1.0, scale=1.0),\
+#          label=r'$\textrm{Laplace}(1, 1)$',\
+#          color='#e52e4e')
+
+# Configure the plot.
+plt.axis([0.0, 6.0, 0.0, 0.6])  # Set plot box.
+plt.legend(loc='best', frameon=False)  # Set plot legend.
+plt.grid(axis='y', alpha=1.0)  # Add grid on y axis.
+plt.xlabel('Count')  # Set x axis label.
+plt.ylabel('Probability')  # Set y axis label.
+
+plt.show()  # Show the plot in a new window.

code/plots/laplace-graph.py

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+#!/usr/bin/env python3
+
+import sys
+sys.path.insert(1, 'code/lib')
+import lmdk_lib
+import numpy as np
+from matplotlib import pyplot as plt
+from scipy.stats import laplace
+
+# Initialize plot
+lmdk_lib.plot_init()
+# The x axis
+x = np.arange(0.0, 6.0, 0.01)
+plt.xlabel('Count')
+# Set y axis label
+plt.ylabel('Likelihood')
+# Draw the first laplace distribution
+plt.plot(x,
+         laplace.pdf(x, loc=2.0, scale=1.0),
+         label='Laplace(2, 1)',
+         linewidth=lmdk_lib.line_width)
+
+# Configure the plot
+plt.axis([0.0, 6.0, 0.0, 0.6])  # Set plot box.
+# Plot legend
+lmdk_lib.plot_legend()
+# Show the plot in a new window
+plt.show()