var app = angular.module('myApp',['ui.directives', 'ui.filters']);
app.controller("myCtrl", function($scope) {
$scope.types = ["Bar", "Pie", "Line", "Line", "Line", "Line", "Line", "Line", "map", "Line", "Bar", "Pie", "Pie", "Pie", "Pie", "Pie", "Pie", "Pie"];
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular-ui/0.4.0/angular-ui.min.js"></script>
<body ng-app="myApp" ng-controller="myCtrl">
<div ng-repeat="type in types|unique: type">{{type}}</div>
</body>
