angularjs google map

google map display incorrect

To remove the grayness, according to https://angular-ui.github.io/angular-google-maps/#!/faq:

If rendering starts before elements are full size, google maps calculates according to the smaller size. This is most commonly the case with a hidden element (eg, ng-show). To fix this, use "ng-if" instead, as this will wait to attach to the DOM until the condition is true, which should be after everything has rendered fully.

I've modified your plunker http://plnkr.co/edit/JetUBY?p=preview to remove the grayness. Controller:

var ModalInstanceCtrl = function ($scope, $modalInstance, lat, lng) {
    $scope.render = true;
    // code here
}