javascript - 如何在openlayers中获得当前缩放

Question

我有个问题。我需要知道开放图层地图的实际缩放比例

$scope.refreshMap = function (lat, long) {
    map.setView(new ol.View({
        projection: 'EPSG:4326',
        center: [long, lat], 
        zoom: "here I do not know what to put"
    }));
};

我尝试map.getZoom()但它不起作用。logcat 给我一个

Uncaught TypeError: Object #<S> has no method 'getZoom'

我正在使用 openlayers 版本：v3.16.0

Answer 1

缩放是ol.View. 所以ol.Map有一个ol.View缩放级别，中心，投影说一些。

map.getView().getZoom();

Answer 2

$scope.refreshMap = function (lat, long) {
            var actualZoom = map.getView().getZoom();
            console.log(z);

            map.setView(new ol.View({
                projection: 'EPSG:4326',
                center: [long, lat], //long,lat
                zoom: actualZoom
            }));
};