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.venv/Lib/site-packages/altair/examples/scatter_qq.py

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+"""
+Quantile-Quantile Plot
+----------------------
+A quantile-quantile plot comparing input data to theoretical distributions.
+"""
+# category: scatter plots
+
+import altair as alt
+from vega_datasets import data
+
+source = data.normal_2d.url
+
+base = alt.Chart(source).transform_quantile(
+    'u',
+    step=0.01,
+    as_ = ['p', 'v']
+).transform_calculate(
+    uniform = 'quantileUniform(datum.p)',
+    normal = 'quantileNormal(datum.p)'
+).mark_point().encode(
+    alt.Y('v:Q')
+)
+
+base.encode(x='uniform:Q') | base.encode(x='normal:Q')