Random Chart Generator Using Altair

This function generates a random chart from the provided DataFrame data using Altair, including randomly selecting the mark type, color, and axis fields.

Technology Stack : Altair, Pandas

Code Type : Custom function

Code Difficulty : Intermediate

                
                    
import altair as alt
import pandas as pd
import random

def generate_random_chart(data):
    """
    Generates a random chart from the provided data using Altair.
    """
    # Randomly choose a mark type
    mark_type = random.choice(['bar', 'line', 'point', 'area', 'rule', 'circle', 'square', 'cross', 'triangle', 'asterisk'])

    # Randomly choose a color
    color = random.choice(alt.color_scale_discrete(name='color', domain=['low', 'high']))

    # Randomly choose a field for the x-axis
    x_field = random.choice(list(data.columns))

    # Randomly choose a field for the y-axis
    y_field = random.choice(list(data.columns))

    # Create the chart
    chart = alt.Chart(data) \
        .mark(mark_type, color=color) \
        .encode(
            alt.X(x_field, title=x_field),
            alt.Y(y_field, title=y_field)
        )

    return chart

# Example usage:
# data = pd.DataFrame({
#     'Category': ['A', 'B', 'C', 'D'],
#     'Value': [10, 20, 15, 5]
# })
# chart = generate_random_chart(data)
# chart.display()