{"TotalMemory":[{"key":"TotalMemory","values":[[118,10]]}],
"Freememory":[{"key":"Freememory","values":[[121,10]]}],
"BufferSize":[{"key":"BufferSize","values":[[123,10]]}],
"TotalSwapMemory":[{"key":"TotalSwapMemory","values":[[125,10]]}],
"UsedSwapMemory":[{"key":"UsedSwapMemory","values":[[127,10]]}],
"FeeSwapMemory":[{"key":"FeeSwapMemory","values":[[129,10]]}],
"":[{"key":"","values":[]}]}

$scope.displayData  = $scope.displayData.filter(function() { return true; });
console.log(angular.toJson($scope.displayData));