fuyuhang
/
Project_yhfu
mirror of http://121.37.83.100:3000/sooka_onest/sooka_onest_forestfire_vue2_visualization.git


			
				
					
						
						
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							<!--********************************************************************
* Copyright© 2000 - 2021 SuperMap Software Co.Ltd. All rights reserved.
*********************************************************************-->
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title data-i18n="resources.title_mathExpression"></title>
    <script type="text/javascript" src="../js/include-web.js"></script>
    <script type="text/javascript" src="../../dist/ol/include-ol.js"></script>
</head>
<body style=" margin: 0;overflow: hidden;background: #fff;width: 100%;height:100%; position: absolute;top: 0;">
<div id="map" style="width: 100%;height:100%"></div>
<script type="text/javascript">
    var map, options, mathExpressionAnalysisResult,
        baseUrl = (window.isLocal ? window.server : "https://iserver.supermap.io")+"/iserver/services/map-jingjin/rest/maps/京津地区地图",
        serviceUrl = (window.isLocal ? window.server : "https://iserver.supermap.io")+"/iserver/services/spatialanalyst-sample/restjsr/spatialanalyst";
    var extent = [104.07, 30.54, 119.51, 42.31];
    new ol.supermap.MapService(baseUrl).getMapInfo(function (serviceResult) {
        var mapJSONObj = serviceResult.result;
        map = new ol.Map({
            target: 'map',
            controls: ol.control.defaults({attributionOptions: {collapsed: false}})
                .extend([new ol.supermap.control.Logo()]),
            view: new ol.View({
                center: [116.85, 39.79],
                zoom: 8,
                projection: "EPSG:4326",
                multiWorld: true
            })
        });
        options = ol.source.TileSuperMapRest.optionsFromMapJSON(baseUrl, mapJSONObj);
        var layer = new ol.layer.Tile({
            source: new ol.source.TileSuperMapRest(options)
        });
        map.addLayer(layer);
        mathExpressionAnalysisProcess();
    });

    function mathExpressionAnalysisProcess() {
        //创建栅格代数运算参数实例
        var mathExpressionAnalysisParameters = new SuperMap.MathExpressionAnalysisParameters({
            //指定数据集,必设
            dataset: "JingjinTerrain@Jingjin",
            //要执行的栅格运算代数表达式,必设
            expression: "[Jingjin.JingjinTerrain] + 600",
            //存储结果数据集的数据源,必设
            targetDatasource: "Jingjin",
            //结果数据集名称,必设
            resultGridName: "MathExpressionAnalysis_Result",
            deleteExistResultDataset: true
        });
        //向iServer发起栅格代数运算请求
        new ol.supermap.SpatialAnalystService(serviceUrl).mathExpressionAnalysis(mathExpressionAnalysisParameters, function (serviceResult) {
            mathExpressionAnalysisResult = serviceResult.result;
            //用栅格专题图展示分析结果
            showAnalysisResult_ThemeGridRange();
        });

        //构造栅格专题图
        function showAnalysisResult_ThemeGridRange() {
            var themeGridRangeIteme1 = new SuperMap.ThemeGridRangeItem({
                    start: 0,
                    end: 650,
                    color: new SuperMap.ServerColor(40, 140, 40)
                }),
                themeGridRangeIteme2 = new SuperMap.ThemeGridRangeItem({
                    start: 650,
                    end: 750,
                    color: new SuperMap.ServerColor(170, 198, 40)
                }),
                themeGridRangeIteme3 = new SuperMap.ThemeGridRangeItem({
                    start: 750,
                    end: 900,
                    color: new SuperMap.ServerColor(191, 191, 0)
                }),
                themeGridRangeIteme4 = new SuperMap.ThemeGridRangeItem({
                    start: 900,
                    end: 1350,
                    color: new SuperMap.ServerColor(191, 95, 0)
                }),
                themeGridRangeIteme5 = new SuperMap.ThemeGridRangeItem({
                    start: 1350,
                    end: 3600,
                    color: new SuperMap.ServerColor(127, 0, 0)
                });

            var themeGridRange = new SuperMap.ThemeGridRange({
                reverseColor: false,
                rangeMode: SuperMap.RangeMode.EQUALINTERVAL,
                //栅格分段专题图子项数组
                items: [themeGridRangeIteme1,
                    themeGridRangeIteme2,
                    themeGridRangeIteme3,
                    themeGridRangeIteme4,
                    themeGridRangeIteme5
                ]
            });

            var themeParameters = new SuperMap.ThemeParameters({
                //制作专题图的数据集
                datasetNames: [mathExpressionAnalysisResult.dataset.split('@')[0]],
                dataSourceNames: ["Jingjin"],
                joinItems: null,
                themes: [themeGridRange]
            });

            new ol.supermap.ThemeService(baseUrl).getThemeInfo(themeParameters, function (serviceResult) {
                var result = serviceResult.result;
                if (result && result.newResourceID) {
                    var themeLayer = new ol.layer.Tile({
                        opacity: 0.8,
                        source: new ol.source.TileSuperMapRest({
                            url: baseUrl,
                            noWrap: true,
                            cacheEnabled: false,
                            layersID: result.newResourceID,
                            tileGrid: new ol.tilegrid.TileGrid({
                                extent: extent,
                                resolutions: options.tileGrid.getResolutions()
                            }),
                            transparent: true
                        })
                    });
                    map.addLayer(themeLayer);
                }
            });
        }
    }
</script>
</body>
</html>