d3-example1.js

angular.module('d3AngularApp', ['d3'])
.directive('d3Bars', ['$window', '$timeout', 'd3Service', 
  function($window, $timeout, d3Service) {
    return {
      restrict: 'A',
      scope: {
        data: '=',
        label: '@',
        onClick: '&'
      },
      link: function(scope, ele, attrs) {
        d3Service.d3().then(function(d3) {

          var renderTimeout;
          var margin = parseInt(attrs.margin) || 20,
              barHeight = parseInt(attrs.barHeight) || 20,
              barPadding = parseInt(attrs.barPadding) || 5;

          var svg = d3.select(ele[0])
            .append('svg')
            .style('width', '100%');

          $window.onresize = function() {
            scope.$apply();
          };

          scope.$watch(function() {
            return angular.element($window)[0].innerWidth;
          }, function() {
            scope.render(scope.data);
          });

          scope.$watch('data', function(newData) {
            scope.render(newData);
          }, true);

          scope.render = function(data) {
            svg.selectAll('*').remove();

            if (!data) return;
            if (renderTimeout) clearTimeout(renderTimeout);

            renderTimeout = $timeout(function() {
              var width = d3.select(ele[0])[0][0].offsetWidth - margin,
                  height = scope.data.length * (barHeight + barPadding),
                  color = d3.scale.category20(),
                  xScale = d3.scale.linear()
                    .domain([0, d3.max(data, function(d) {
                      return d.score;
                    })])
                    .range([0, width]);

              svg.attr('height', height);

              svg.selectAll('rect')
                .data(data)
                .enter()
                  .append('rect')
                  .on('click', function(d,i) {
                    return scope.onClick({item: d});
                  })
                  .attr('height', barHeight)
                  .attr('width', 140)
                  .attr('x', Math.round(margin/2))
                  .attr('y', function(d,i) {
                    return i * (barHeight + barPadding);
                  })
                  .attr('fill', function(d) {
                    return color(d.score);
                  })
                  .transition()
                    .duration(1000)
                    .attr('width', function(d) {
                      return xScale(d.score);
                    });
              svg.selectAll('text')
                .data(data)
                .enter()
                  .append('text')
                  .attr('fill', '#fff')
                  .attr('y', function(d,i) {
                    return i * (barHeight + barPadding) + 15;
                  })
                  .attr('x', 15)
                  .text(function(d) {
                    return d.name + " (scored: " + d.score + ")";
                  });
            }, 200);
          };
        });
      }}
}])

d3.js

angular.module('d3', [])
.factory('d3Service', ['$document', '$window', '$q', '$rootScope',
  function($document, $window, $q, $rootScope) {
    var d = $q.defer(),
        d3service = {
          d3: function() { return d.promise; }
        };
  function onScriptLoad() {
    // Load client in the browser
    $rootScope.$apply(function() { d.resolve($window.d3); });
  }
  var scriptTag = $document[0].createElement('script');
  scriptTag.type = 'text/javascript'; 
  scriptTag.async = true;
  scriptTag.src = 'http://d3js.org/d3.v3.min.js';
  scriptTag.onreadystatechange = function () {
    if (this.readyState == 'complete') onScriptLoad();
  }
  scriptTag.onload = onScriptLoad;

  var s = $document[0].getElementsByTagName('body')[0];
  s.appendChild(scriptTag);

  return d3service;
}]);

is this a fully functioning example? It fails to load for me.