mbostock/.block

## .block
license: gpl-3.0
height: 600
border: no
redirect: https://observablehq.com/@d3/u-s-map-canvas

## README.md

      
        

                
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              README.md
            
          
        
      
      
    D3’s d3.geoPath can be used with Canvas, not just SVG! This geometry is from us-atlas.

  

  

## index.html
<!DOCTYPE html>
<canvas width="960" height="600"></canvas>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="https://unpkg.com/topojson-client@3"></script>
<script>

var context = d3.select("canvas").node().getContext("2d"),
    path = d3.geoPath().context(context);

d3.json("https://unpkg.com/us-atlas@1/us/10m.json", function(error, us) {
  if (error) throw error;

  context.beginPath();
  path(topojson.mesh(us));
  context.stroke();
});

</script>

## thumbnail.png

      
        

                
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              thumbnail.png
	license: gpl-3.0
	height: 600
	border: no
	redirect: https://observablehq.com/@d3/u-s-map-canvas
	<!DOCTYPE html>
	<canvas width="960" height="600"></canvas>
	<script src="https://d3js.org/d3.v4.min.js"></script>
	<script src="https://unpkg.com/topojson-client@3"></script>
	<script>

	var context = d3.select("canvas").node().getContext("2d"),
	path = d3.geoPath().context(context);

	d3.json("https://unpkg.com/us-atlas@1/us/10m.json", function(error, us) {
	if (error) throw error;

	context.beginPath();
	path(topojson.mesh(us));
	context.stroke();
	});

	</script>