ruiyang123/.block

## .block
license: mit

## README.md

      
    Raw
  

              README.md
            
          
    Built with blockbuilder.org

  
## index.html
<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>

<body>
  <script>
		 	var data = [{"name":"bob","v":2},
                 {"name":"bob","v":3},
                 {"name":"alice","v":2}];

    console.log(d3.nest().key(function(d){return d.name;})
                .rollup(function(v){return {
      "sum" : d3.sum(v,function(e){return e.v;}),

   	"value" : v
   }
                                  })
                .entries(data))


  </script>
</body>
	<!DOCTYPE html>
	<head>
	<meta charset="utf-8">
	<script src="https://d3js.org/d3.v4.min.js"></script>
	<style>
	body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
	</style>
	</head>

	<body>
	<script>
	var data = [{"name":"bob","v":2},
	{"name":"bob","v":3},
	{"name":"alice","v":2}];

	console.log(d3.nest().key(function(d){return d.name;})
	.rollup(function(v){return {
	"sum" : d3.sum(v,function(e){return e.v;}),

	"value" : v
	}
	})
	.entries(data))





	</script>
	</body>