Python 3 function to create a political quadrant chart. Uses `matplotlib`.

create_quadrant_chart.py

import matplotlib.pyplot as plt
import matplotlib.patches as patches

def create_quadrant_chart(
    quadrant_labels,
    quadrant_colors,
    axis_labels,
    arrow_props=None,
    text_bbox=None,
    figsize=(8, 8),
    output_file=None
):
    """Create a customizable quadrant chart with arrows."""
    fig, ax = plt.subplots(figsize=figsize)
    positions = [(0.25, 0.75), (0.75, 0.75), (0.25, 0.25), (0.75, 0.25)]
    default_bbox = dict(facecolor='white', edgecolor='black', alpha=0.9)
    
    # Draw colored quadrants
    for (x, y), color in zip(positions, quadrant_colors):
        rect = patches.Rectangle((x-0.25, y-0.25), 0.5, 0.5, 
                               color=color, alpha=0.5)
        ax.add_patch(rect)
    
    # Add divider lines
    ax.axhline(0.5, color='black', linewidth=1.5)
    ax.axvline(0.5, color='black', linewidth=1.5)
    
    # Add quadrant labels
    for label, (x, y) in zip(quadrant_labels, positions):
        ax.text(x, y, label, fontsize=10, ha='center', va='center',
              bbox=text_bbox or default_bbox)
    
    # Add arrows
    arrow_args = dict(arrowstyle="->", lw=1.5, color='black')
    if arrow_props:
        arrow_args.update(arrow_props)
        
    ax.annotate("", xy=(1.05, 0.5), xytext=(-0.05, 0.5), 
              arrowprops=arrow_args)  # X-axis
    ax.annotate("", xy=(0.5, 1.05), xytext=(0.5, -0.05), 
              arrowprops=arrow_args)  # Y-axis
    
    # Add axis labels
    ax.text(1.1, 0.5, axis_labels['x_right'], fontsize=10, 
          va='center', ha='left')
    ax.text(-0.1, 0.5, axis_labels['x_left'], fontsize=10, 
          va='center', ha='right')
    ax.text(0.5, 1.1, axis_labels['y_top'], fontsize=10, 
          ha='center', va='bottom')
    ax.text(0.5, -0.1, axis_labels['y_bottom'], fontsize=10, 
          ha='center', va='top')
    
    ax.set_xticks([])
    ax.set_yticks([])
    ax.set_frame_on(False)
    
    if output_file:
        plt.savefig(output_file, dpi=300, bbox_inches='tight')
    plt.show()

if __name__ == "__main__":
    sample_config = {
        'quadrant_labels': [
            "Authoritarianism\n(e.g...)",
            "Right\n(e.g...)",
            "Left\n(e.g...)",
            "Libertarianism\n(e.g...)"
        ],
        'quadrant_colors': ['lightcoral', 'lightblue', 'lightgreen', 'lightyellow'],
        'axis_labels': {
            'x_left': "Heavy Regulation External",
            'x_right': "Light Regulation External",
            'y_top': "Heavy Regulation Internal",
            'y_bottom': "Light Regulation Internal"
        }
    }
    create_quadrant_chart(**sample_config, output_file="sample_quadrant.png")