Use slope in axline example

Author: timhoffm

examples/pyplots/axline.py

@@ -20,7 +20,7 @@
 plt.axhline(y=0.5, color="black", linestyle=":")
 plt.axhline(y=1.0, color="black", linestyle="--")
 plt.axvline(color="grey")
-plt.axline((0, 0.5), (2, 1), color="black", linestyle=(0, (5, 5)))
+plt.axline((0, 0.5), slope=0.25, color="black", linestyle=(0, (5, 5)))
 plt.plot(t, sig, linewidth=2, label=r"$\sigma(t) = \frac{1}{1 + e^{-t}}$")
 plt.xlim(-10, 10)
 plt.xlabel("t")