I want to color my Bar "Red" when below zero and "light green" when above zero in plotly python.
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Does this answer your question? Plotly: How to colorcode plotly graph objects bar chart using Python?vestland– vestland2020-05-21 06:47:57 +00:00Commented May 21, 2020 at 6:47
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2 Answers
Firstly, would be great if you drop a snippet of your code. That way we could for instance figure out whether ur using px or go, and what the df looks like.
Nevertheless, heres the fix:
import plotly.graph_objects as go
values = [10, -100, 22, 45, -57]
threshold = 0
fig = go.Figure()
fig.add_trace(go.Bar(x=[0,1,2,3,4], y=values, marker=dict(color=['green' if value > threshold else 'red' for value in values])))
marker_color can take a list in python, and list comprehension is an easy to read, and efficient method.
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One of the ways is creating bins. In your case, there would be 2 bins: +ve values and -ve values. Each bin may be assigned a color as you need.
The following example solves it:
https://community.plotly.com/t/different-colors-for-bars-in-barchart-by-their-value/6527/7
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