{"version":"1.0","type":"rich","title":"d3v3 Multiple Pie Charts on Map - Data from CSV","description":"This example shows a map of India with seven small pie charts positioned at the locations of water-quality monitoring points. Each pie chart encodes the distribution of data values from a CSV file, with each slice colored by category. The map is rendered using a Mercator projection of a TopoJSON world dataset, with landmasses filled green and country borders drawn as white mesh lines. Pie charts are placed using the geographic coordinates (longitude/latitude) from the CSV, with a label above each chart. The pie layout and arc generator from d3.v3 are used to create the charts, with values parsed from a dash-separated string in the data column. Colors are assigned via a categorical scale, and the visualization combines geographic and statistical data in an SVG canvas. The example is based on a Stack Overflow question about plotting pie charts over map points with D3.js.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-d5686606af0fbd69ed8f71f5b36420a5?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}