Random Chart Generation with Altair

This function generates a random chart from a given dataset using the Altair library. The function first defines different chart types and then randomly selects one to generate the corresponding chart.

Technology Stack : Altair

Code Type : The type of code

Code Difficulty :

                
                    
import random
import altair as alt

def random_chart(data, chart_type):
    """
    This function generates a random chart from a given dataset using Altair.
    """
    # Define the chart types
    chart_types = {
        'bar': alt.Chart(data).mark_bar().encode(
            alt.X('some_category:O', title='Category'),
            alt.Y('some_numeric:Q', title='Value')
        ),
        'line': alt.Chart(data).mark_line().encode(
            alt.X('some_timeunit:O', title='Time'),
            alt.Y('some_numeric:Q', title='Value')
        ),
        'point': alt.Chart(data).mark_point().encode(
            alt.X('some_category:O', title='Category'),
            alt.Y('some_numeric:Q', title='Value')
        ),
        'area': alt.Chart(data).mark_area().encode(
            alt.X('some_timeunit:O', title='Time'),
            alt.Y('some_numeric:Q', title='Value')
        )
    }
    
    # Randomly select a chart type
    selected_chart_type = random.choice(list(chart_types.keys()))
    
    # Generate the chart
    chart = chart_types[selected_chart_type]
    
    return chart

# Example usage
data = alt.Data({ 'some_category': ['A', 'B', 'C'], 'some_numeric': [1, 2, 3] })
chart = random_chart(data, 'bar')

# Output the chart
chart.display()