3D Bubble chart using Plotly in Python

Plotly is a Python library that is used to design graphs, especially interactive graphs. It can plot various graphs and charts like histogram, barplot, boxplot, spreadplot, and many more. It is mainly used in data analysis as well as financial analysis. plotly is an interactive visualization library.

3D Bubble Chart in Plotly

A bubble chart can be created using the scatter_3d() method of plotly.express class. A bubble chart is a data visualization which helps to displays multiple circles (bubbles) in a 3d dimensional plot as same in 3d scatter plot. A bubble chart is primarily used to depict and show relationships between numeric variables.

Example 1: Using Iris dataset

Python3

import plotly.express as px


df = px.data.iris()
fig = px.scatter_3d(df, x='sepal_width',
                    y='sepal_length',
                    z='petal_width',
                    size='petal_length',
                    color='species')

fig.show()

Output:

Example 2: Using tips dataset

Python3

import plotly.express as px


df = px.data.tips()
fig = px.scatter_3d(df, x='total_bill',
                    y='day', z='time',
                    size='tip', color='sex')

fig.show()

Output:

Customizing the Color bar

It can be edited using the color option of the Scatter3D() method of graph_objects class. Let’s look at the below example for a better understanding of the topic.

Example:

Python3

import plotly.express as px
import plotly.graph_objects as go


df = px.data.tips()

fig = go.Figure(go.Scatter3d(
    x = df['total_bill'],
    y = df['time'],
    z = df['day'],
    mode = 'markers',
    marker = dict(
        color = df['tip'],
        size = df['total_bill'],
        colorscale=[[0, 'rgb(15, 10, 172)'],
                    [.3, 'rgb(150, 255, 255)'],
                    [1, 'rgb(100, 10, 100)']]
        )
))

fig.show()

Output: