Responsive visualizations using Angular directives

This is a code excerpt from the book D3 on Angular. http://leanpub.com/d3angularjs

Data from Wikipedia (3/16/2014) https://en.wikipedia.org/wiki/List_of_largest_employers

Open it in a new window and resize the browser to see the effect.

<!DOCTYPE html>
<html>
  <head>
    <title></title>
  </head>
  <style>
    body, html{
      margin: 0;
      color: white;
      background-color: black;
      font-family: helvetica;
      margin: auto;
      width: 100%;
      height: 100%;
    }
    scatter{
      display: block;
      z-index: 0;
      overflow: hidden;
      font-size: 10px;
    }
    scatter circle{
      fill: yellow;
      opacity: 1;
      cursor: pointer;
      stroke-width: 2;
    }
    scatter circle:hover{
      stroke: white;
    }
    scatter text{
      fill: white;
      stroke: none;
    }
    scatter .x-axis path, scatter .y-axis path{
      stroke: none;
      fill: none;
    }
    scatter .x-axis line, scatter .y-axis line{
      stroke: rgba(255, 255, 255, 0.2);
    }
    .scatter-1{
      width: 30%;
    }
    .scatter-2{
      width: 70%;
    }
    .scatter-3{
      width: 100%;
    }
    .scatter-1, .scatter-2, .scatter-3{
      height: 50%;
      float: left;
    }
  </style>

var app = angular.module('myApp', []);

app.controller('MainCtrl', function($scope, $window){
  angular.element($window).on('resize', function(){ $scope.$apply() })
  // world's largest employers
  // source: https://en.wikipedia.org/wiki/List_of_largest_employers
  $scope.employers = [
      { value: 3.2, name: 'United States Department of Defense' }
    , { value: 2.3, name: 'People\'s Liberation Army' }
    , { value: 2.1, name: 'Walmart' }
    , { value: 1.9, name: 'McDonald\'s' }
    , { value: 1.7, name: 'National Health Service' }
    , { value: 1.6, name: 'China National Petroleum Corporation' }
    , { value: 1.5, name: 'State Grid Corporation of China' }
    , { value: 1.4, name: 'Indian Railways' }
    , { value: 1.3, name: 'Indian Armed Forces' }
    , { value: 1.2, name: 'Hon Hai Precision Industry (Foxconn)' }
  ]
});

app.directive('scatter', function(){
  function link(scope, el, attr){
    el = el[0];
    var w, h;
    var svg = d3.select(el).append('svg');
    var xAxisG = svg.append('g').attr('class', 'x-axis');
    var yAxisG = svg.append('g').attr('class', 'y-axis');
    var points = svg.append('g').attr('class', 'points').selectAll('g.point');
    var x = d3.scale.linear();
    var y = d3.scale.linear();
    var xAxis = d3.svg.axis().scale(x).orient('bottom')
      .tickFormat(function(d, i){ return i + 1; }); // 1 index the company ranks
    var yAxis = d3.svg.axis().scale(y).orient('left');
    var m = 50;

scope.$watch(function(){
      w = el.clientWidth;
      h = el.clientHeight;
      return w + h;
    }, resize);

function resize(){
      svg.attr({width: w, height: h});
      x.range([m, w - m]);
      y.range([h - m, m]);
      xAxis.tickSize(-h + 2 * m);
      yAxis.tickSize(-w + 2 * m);
      xAxisG.attr('transform', 'translate(' + [0, y.range()[0] + 0.5] + ')');
      yAxisG.attr('transform', 'translate(' + [x.range()[0], 0] + ')');
      update();
    }

scope.$watch('data', update);

// update the position of all the points
      points.attr('transform', function(d, i){
        return 'translate(' + [x(i), y(d.value)] + ')';
      });

xAxisG.call(xAxis);
      yAxisG.call(yAxis);

};
  }
  return {
    link: link,
    restrict: 'E',
    scope: { data: '=' }
  };
});
  </script>
</html>

Modified http://d3js.org/d3.v3.min.js to a secure url

https://ajax.googleapis.com/ajax/libs/angularjs/1.2.10/angular.min.js

https://d3js.org/d3.v3.min.js