.. This document is auto-generated by the altair-gallery extension. Do not modify directly.

.. _gallery_stem_and_leaf:


Stem and Leaf Plot
------------------
This example shows how to make a stem and leaf plot.


.. altair-plot::
    :code-below:

    
    import altair as alt
    import pandas as pd
    import numpy as np
    np.random.seed(42)

    # Generating random data
    df = pd.DataFrame({'samples': np.random.normal(50, 15, 100).astype(int).astype(str)})

    # Splitting stem and leaf
    df['stem'] = df['samples'].str[:-1]
    df['leaf'] = df['samples'].str[-1]

    df = df.sort_values(by=['stem', 'leaf'])

    # Determining leaf position
    df['position'] = df.groupby('stem').cumcount().add(1)

    # Creating stem and leaf plot
    alt.Chart(df).mark_text(
        align='left',
        baseline='middle',
        dx=-5
    ).encode(
        alt.X('position:Q',
            axis=alt.Axis(title='', ticks=False, labels=False, grid=False)
        ),
        alt.Y('stem:N', axis=alt.Axis(title='', tickSize=0)),
        text='leaf:N'
    ).configure_axis(
        labelFontSize=20
    ).configure_text(
        fontSize=20
    )


.. toctree::
   :hidden: