Question

表面分析,如提取等值线,region可以设置为某个面数据集吗?比如地图面数据集,如何设置谢谢!

 function surfaceAnalystProcess() {
        region = L.polygon([
            [4010338, 0],
            [4010338, 1063524],
            [3150322, 1063524],
            [3150322, 0]
        ]);

Answer 1

clipRegion是一个面对象，不能直接设置为数据集

Comments

那有什么方法可以用面裁剪等值线吗

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您将clipRegion设置为想要的面对象就可以了，https://iclient.supermap.io/web/apis/leaflet.html相应的api都有介绍，您可以参考一下

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将clipDatasetName设置为面数据集后没反应呀

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您是直接在SurfaceAnalystParametersSetting设置的，还是用的new SuperMap.ClipParameter(options)这个呢

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function surfaceAnalystProcess() {

        surfaceAnalystParameters = new SuperMap.DatasetSurfaceAnalystParameters({

            extractParameter: new SuperMap.SurfaceAnalystParametersSetting({

                datumValue: 1,

                interval: 1,

                resampleTolerance: 0,

                smoothMethod: SuperMap.SmoothMethod.BSPLINE,

                smoothness: 2,

                clipDatasetName: "ChinaRegion@China",

            }),

直接设置的

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SurfaceAnalystParametersSetting中没有clipDatasetName这个参数，只有clipRegion参数，需要设置面对象，不能直接写数据集

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function surfaceAnalystProcess() {

        {

            var CR = new SuperMap.ClipParameter({

                  clipDatasetName:"ChinaRegion@China"

})

        }

        surfaceAnalystParameters = new SuperMap.DatasetSurfaceAnalystParameters({

            extractParameter: new SuperMap.SurfaceAnalystParametersSetting({

                datumValue: 1,

                interval: 1,

                resampleTolerance: 0,

                smoothMethod: SuperMap.SmoothMethod.BSPLINE,

                smoothness: 2,

                clipRegion:CR

            }),

您好,请问这样写对吗,没有报错,可是没有裁剪