.bar()

In Plotly, the .bar() method is part of the high-level interface named plotly.express. It generates charts representing categorical data with vertical bars.

Syntax

plotly.express.bar(x, y, labels, title, width, height, ...)

• x: A string, integer, series, or array-like object designating the x-axis data.
• y: A string, integer, series, or array-like object designating the y-axis data.
• labels: A dictionary used for customizing labels, including column names, axis titles, hover labels, and legend entries.
• title: A string designating the chart title.
• width: An integer designating the chart width in pixels.
• height: An integer designating the chart height in pixels.

Note: The ellipsis (…) indicates that there can be additional optional parameters beyond those listed here.

Example

Below is an example demonstrating how to use the .bar() method to create a simple bar chart visualizing the values of items in categories a, b, c, and d:

import plotly.express as px
fig = px.bar(x=['a', 'b', 'c', 'd'], y=[1, 2, 3, 4], labels={'x':'Category', 'y':'Count'}, title='Simple Bar Chart', height=500, width=250)
fig.show()

The above code produces the following output: