Flip vertical bar plot over X axis Altair

Question

If I have this bar plot:

enter image description here

How can I flip it like this

enter image description here

Of course preserving right labels.

Do you just want to rotate the picture itself? That can be done in paint or similar. Or are you asking for something else? — oskros, Nov 16 '20 at 15:11
Look at this https://stackoverflow.com/questions/22540449/how-can-i-rotate-a-matplotlib-plot-through-90-degrees — oskros, Nov 16 '20 at 15:20

score 3 · Accepted Answer · answered Nov 16 '20 at 17:05

You can do this by swapping the x and y encodings and adjusting the axis properties accordingly. For example, if you have this chart:

import altair as alt
import pandas as pd
import numpy as np

np.random.seed(1701)
df = pd.DataFrame({
    'data': 6 + np.random.randn(500)
})

alt.Chart(df).mark_bar().encode(
    x=alt.X('data', bin=alt.Bin(maxbins=40)),
    y='count()'
).properties(width=800, height=150)

You can create a rotated version like this:

alt.Chart(df).mark_bar().encode(
    y=alt.Y('data', bin=alt.Bin(maxbins=40), axis=alt.Axis(orient='right')),
    x=alt.X('count()', scale=alt.Scale(reverse=True))
).properties(width=150, height=800)

Flip vertical bar plot over X axis Altair

1 Answers1