Draw a map of India with D3.js, Topojson, and five simple functions:
centerZoom - Automatically centers and scales your map to its container, and returns your map’s outer boundaries in case you want to draw them.drawOuterBoundary - Uses the boundary returned from centerZoom to draw a boundary around your whole map.drawPlaces - Draws place names, if your topojson has places.drawSubunits - Draws subunits.colorSubunits - Colors the subunits.This map uses a Mercator projection, and the colors are generated from d3.schemeCategory20. For a tutorial on converting Geojson to Topojson and for finding the coordinates of major cities, see this tutorial.