update example figure for readme

Author: phobson

docs/examples/example.py

@@ -0,0 +1,29 @@
+# %%
+from matplotlib import pyplot
+from scipy import stats
+import probscale  # nothing else needed
+
+beta = stats.beta(a=3, b=4)
+weibull = stats.weibull_min(c=5)
+scales = [
+    {"scale": {"value": "linear"}, "label": "Linear (built-in)"},
+    {"scale": {"value": "log", "base": 10}, "label": "Log. Base 10 (built-in)"},
+    {"scale": {"value": "log", "base": 2}, "label": "Log. Base 2 (built-in)"},
+    {"scale": {"value": "logit"}, "label": "Logit (built-in)"},
+    {"scale": {"value": "prob"}, "label": "Standard Normal Probability (this package)"},
+    {"scale": {"value": "prob", "dist": weibull}, "label": "Weibull probability scale, c=5 (this package)"},
+    {"scale": {"value": "prob", "dist": beta}, "label": "Beta probability scale, α=3 & β=4 (this package)"},
+]
+
+N = len(scales)
+fig, axes = pyplot.subplots(nrows=N, figsize=(9, N-1), constrained_layout=True)
+for scale, ax in zip(scales, axes.flat):
+    ax.set_xscale(**scale["scale"])
+    ax.text(0.0, 0.1, scale["label"] + " →", transform=ax.transAxes)
+    ax.set_xlim(left=0.5, right=99.5)
+    ax.set_yticks([])
+    ax.spines.left.set_visible(False)
+    ax.spines.right.set_visible(False)
+    ax.spines.top.set_visible(False)
+
+fig.savefig("../img/example.png", dpi=300)