How to re-scale d3.js map after zooming?

@giovanny.lueilwitz 

To re-scale a d3.js map after zooming, you can use the following steps:

1. Add a zoom event listener to your map element:

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var zoom = d3.zoom()
    .on("zoom", zoomed);

svg.call(zoom);

1. Define the zoomed function to handle the zoom event and re-scale the map:

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function zoomed() {
  g.attr("transform", d3.event.transform);
}

1. Update the projection scale and translate based on the zoom scale and transform:

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projection
    .scale(d3.event.transform.k * initialScale)
    .translate([d3.event.transform.x, d3.event.transform.y]);

1. Update the paths of the map features based on the new projection:

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svg.selectAll("path")
    .attr("d", path);

By following these steps, you can re-scale the d3.js map after zooming and ensure that the map features are correctly updated and displayed at the new scale.