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

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+"""
+Cumulative Count Chart
+----------------------
+This example shows an area chart with cumulative count.
+Adapted from https://vega.github.io/vega-lite/examples/area_cumulative_freq.html
+
+"""
+# category: area charts
+
+import altair as alt
+from vega_datasets import data
+
+source = data.movies.url
+
+alt.Chart(source).transform_window(
+    cumulative_count="count()",
+    sort=[{"field": "IMDB_Rating"}],
+).mark_area().encode(
+    x="IMDB_Rating:Q",
+    y="cumulative_count:Q"
+)