Source code for pie_chart_example

import os
import json
import pandas as pd
from mdvtools.mdvproject import MDVProject
from mdvtools.charts.pie_chart import PieChart



def create_pie_chart(title, param, size, position):
    """Create and configure a PieChart instance with the given parameters."""
    plot = PieChart(
        title=title,
        param=param,
        size=size,
        position=position
    )

    return plot




def load_data(path):
    """Load data from the specified CSV file."""
    return pd.read_csv(path, low_memory=False)




def convert_plot_to_json(plot):
    """Convert plot data to JSON format."""
    return json.loads(json.dumps(plot.plot_data, indent=2).replace("\\\\", ""))




def main():
    """Main function to create the project and serve it."""
    # Constants
    project_path = os.path.expanduser('~/mdv/project')
    data_path = "path_to_data"
    view_name = "default"
    
    # Create project
    project = MDVProject(project_path, delete_existing=True)
    
    # Load data
    data_frame = load_data(data_path)
    
    # Add datasource
    project.add_datasource(data_path, data_frame)
    
    # Pie chart parameters
    title = "Pie Chart Example"
    param = "highly_variable"
    size = [792, 472]
    position = [10, 10]
    
    # Create plot
    plot = create_pie_chart(title, param, size, position)
    
    # Convert plot to JSON and set view
    pie_chart_json = convert_plot_to_json(plot)
    Piechart_view = {'initialCharts': {data_path: [pie_chart_json]}}
    
    project.set_view(view_name, Piechart_view)
    project.set_editable(True)
    project.serve()


if __name__ == "__main__":
    main()