Merging PR_218 openai_rev package with new streamlit chat app

venv/lib/python3.9/site-packages/altair/examples/wilkinson-dot-plot.py

@@ -0,0 +1,27 @@
+"""
+Wilkinson Dot Plot
+------------------
+An example of a `Wilkinson Dot Plot <https://en.wikipedia.org/wiki/Dot_plot_(statistics)>`_
+"""
+# category: other charts
+
+import altair as alt
+import pandas as pd
+
+source = pd.DataFrame(
+    {"data":[1,1,1,1,1,1,1,1,1,1,
+             2,2,2,
+             3,3,
+             4,4,4,4,4,4]
+    }
+)
+
+alt.Chart(source).mark_circle(opacity=1).transform_window(
+    id='rank()', 
+    groupby=['data']
+).encode(
+    alt.X('data:O'), 
+    alt.Y('id:O', 
+          axis=None, 
+          sort='descending')
+).properties(height=100)