mirror of
https://github.com/aykhans/AzSuicideDataVisualization.git
synced 2025-04-21 18:23:35 +00:00
30 lines
694 B
Python
30 lines
694 B
Python
"""
|
|
Layered Histogram
|
|
=================
|
|
This example shows how to use opacity to make a layered histogram in Altair.
|
|
"""
|
|
# category: histograms
|
|
import pandas as pd
|
|
import altair as alt
|
|
import numpy as np
|
|
np.random.seed(42)
|
|
|
|
# Generating Data
|
|
source = pd.DataFrame({
|
|
'Trial A': np.random.normal(0, 0.8, 1000),
|
|
'Trial B': np.random.normal(-2, 1, 1000),
|
|
'Trial C': np.random.normal(3, 2, 1000)
|
|
})
|
|
|
|
alt.Chart(source).transform_fold(
|
|
['Trial A', 'Trial B', 'Trial C'],
|
|
as_=['Experiment', 'Measurement']
|
|
).mark_bar(
|
|
opacity=0.3,
|
|
binSpacing=0
|
|
).encode(
|
|
alt.X('Measurement:Q', bin=alt.Bin(maxbins=100)),
|
|
alt.Y('count()', stack=None),
|
|
alt.Color('Experiment:N')
|
|
)
|