Add legend to sine wave example

Author: stephane-caron

docs/environment.yml

@@ -3,7 +3,7 @@ channels:
     - conda-forge
 dependencies:
     - matplotlib
-    - pip >=21.3.1
+    - pip >= 21.3.1
     - pip:
         - furo >= 2023.8.17
         - sphinx >= 7.2.2

examples/sine_waves.py

@@ -24,13 +24,17 @@
 plot.left_axis.set_ylabel(r"$\sin(\omega t)$", color="b")
 plot.left_axis.tick_params(axis="y", labelcolor="b")
 
-plot.add_right("3cos", "g-")
-plot.right_axis.set_ylabel(r"$3 \cos(\omega t)$", color="g")
+plot.add_right("3 cos", "g-")
+plot.add_right("1.5 cos", "g:")
+plot.right_axis.set_ylabel(r"Cosines", color="g")
 plot.right_axis.tick_params(axis="y", labelcolor="g")
+
+plot.legend()
 plot.redraw()
 
 for i in range(500):
     t = i * TIMESTEP
     plot.send("sin", math.sin(OMEGA * t))
-    plot.send("3cos", 3 * math.cos(OMEGA * t))
+    plot.send("3 cos", 3 * math.cos(OMEGA * t))
+    plot.send("1.5 cos", 1.5 * math.cos(OMEGA * t))
     plot.update()

pyproject.toml

@@ -31,6 +31,7 @@ dependencies = [
 ]
 
 [project.urls]
+Homepage = "https://github.com/stephane-caron/matplotlive"
 Source = "https://github.com/stephane-caron/matplotlive"
 Tracker = "https://github.com/stephane-caron/matplotlive/issues"
 Changelog = "https://github.com/stephane-caron/matplotlive/blob/main/CHANGELOG.md"