add examples/bode-plot.py

Author: c0rychu

examples/bode-plot.py

@@ -0,0 +1,42 @@
+import matplotlib.pyplot as plt
+import numpy as np
+
+plt.style.use("physics_plot.pp_base")
+
+
+# Functions for example plot
+def db(x):
+    return 20.0 * np.log10(x)
+
+
+def model(f):
+    return 10.0 / (f - 1.0j * 10)
+
+
+# figsize=(x, y), change x and y by yourself!!!
+fig, (ax_m, ax_p) = plt.subplots(
+    nrows=2, ncols=1, figsize=(5, 3.5), constrained_layout=True
+)
+fig.suptitle("Low Pass Filter")
+f = np.logspace(0, 3, 1000)
+
+# Magnitude
+ax_m.semilogx(f, db(np.abs(model(f))), "b", label="LPF")
+ax_m.set_xlim(1e0, 1e3)
+ax_m.set_ylabel("Magnitude [dB]")
+ax_m.grid(visible=True, which="major")
+ax_m.grid(visible=True, which="minor", linestyle=":")
+ax_m.legend(loc=1)
+
+# Phase
+ax_p.semilogx(f, np.angle(model(f), deg=True), "b", label="LPF")
+ax_p.set_xlim(1e0, 1e3)
+ax_p.set_ylim(0, 90)
+ax_p.set_xlabel("Frequency [Hz]")
+ax_p.set_ylabel("Phase [deg]")
+ax_p.grid(visible=True, which="major")
+ax_p.grid(visible=True, which="minor", linestyle=":")
+ax_p.legend(loc=1)
+
+# fig.tight_layout()
+fig.savefig("bode-plot@2x.png")

examples/bode-plot@2x.png

@@ -1,2 +0,0 @@
-def hello() -> str:
-    return "Hello from physics-plot!"

src/physics_plot/__init__.py

@@ -40,7 +40,11 @@ text.usetex : True
 text.latex.preamble : \usepackage{amsmath} \usepackage{amssymb}
 
 # Grid Color
-grid.color : 0.5
+grid.color : "0.9"
+
+# Legend
+legend.fancybox : False
+legend.fontsize : small
 
 # Save Fig
-savefig.dpi : 300
+savefig.dpi : 600