概述:
前面的文章中,提到了Arcgis中实现wkt转换为geometry,但是这种转换仅实现了简单的点(point)、线(polyline)和面(polygon)的转换,对于复杂点或者复杂多边形没有涉及,在本文讲述通过terraformers加载展示wkt。
terraformers简介:
terraformers是Esri的一个开源项目,主要功能如下:
大家可通过http://download.csdn.net/detail/gisshixisheng/9681608下载相关的js文件,也可直接在github上下载,github上的地址为https://github.com/Esri/Terraformer。
实现代码:
1、Arcgis加载WKT
html, body, #map {
height: 100%;
width: 100%;
margin: 0;
padding: 0;
}
var map;
require([ "esri/map",
"esri/layers/ArcGISTiledMapServiceLayer",
"esri/layers/GraphicsLayer",
"esri/graphic",
"esri/geometry/Point",
"esri/geometry/jsonUtils",
"esri/symbols/SimpleMarkerSymbol",
"esri/symbols/SimpleLineSymbol",
"esri/symbols/SimpleFillSymbol",
"esri/Color",
"dojo/domReady!"
],
function(Map,
Tiled,
GraphicsLayer,
Graphic,
Point,
geometryJsonUtils,
SimpleMarkerSymbol,
SimpleLineSymbol,
SimpleFillSymbol,
Color){
map = new Map("map");
var tiled = new Tiled("http://localhost:6080/arcgis/rest/services/lzugis/base_china/MapServer");
map.addLayer(tiled);
var mapCenter = new Point(103.847, 36.0473, {"wkid":4326});
map.centerAndZoom(mapCenter,1);
var gLayer = new GraphicsLayer();
map.addLayer(gLayer);
gLayer.on("click",function(feature){
console.log(feature);
});
var wkts = [
"POINT(107.5758285931443 29.7822116459692)",
"LINESTRING(120.18304604073 30.3305841465568,108.805692477062 32.0850224203499)",
"POLYGON((102.797302689433 36.5936423859273,105.519115206186 29.4789248520356,100.346180647351 19.9699202912212))"
];
map.on("load",function(){
for(var i=0,len = wkts.length;i var primitive = Terraformer.WKT.parse(wkts[i]); var arcgis = Terraformer.ArcGIS.convert(primitive); var geometry = geometryJsonUtils.fromJson(arcgis); var symbol = getSymbol(geometry.type); var gfx = new Graphic(geometry,symbol); gLayer.add(gfx); } }); function getSymbol(geotype){ var symbol = null; if(geotype==="point"){ symbol = new SimpleMarkerSymbol(SimpleMarkerSymbol.STYLE_CIRCLE, 12, new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID, new Color([255,0,0]), 1), new Color([0,0,255,255])); } else if(geotype==="polyline"){ symbol = new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID, new Color([255,0,0]), 2); } else{ symbol = new SimpleFillSymbol(SimpleFillSymbol.STYLE_SOLID, new SimpleLineSymbol(SimpleLineSymbol.STYLE_DASHDOT, new Color([255,0,0]), 2),new Color([255,255,0,0.25]) ); } return symbol; } });
效果:
2、leaflet加载WKT
body {
padding: 0;
margin: 0;
}
html, body, #map {
height: 100%;
}
.leaflet-control-attribution{
display: none;
}
var map;
$(window).load(function() {
map = L.map('map').setView([35.851354460363,104.21390114103], 4);//35.851354460363,104.21390114103
var wms = L.tileLayer.wms("http://localhost:8088/geoserver/lzugis/wms", {
layers: 'province',
format: 'image/png',
transparent: true,
version:'1.1.1'
});
map.addLayer(wms);
function onEachFeature(feature, layer) {
var popupContent = "
I started out as a WKT " +
feature.type + ", but now I'm a Leaflet vector!
";if (feature.properties && feature.properties.popupContent) {
popupContent += feature.properties.popupContent;
}
layer.bindPopup(popupContent);
}
var wkts = [
"POINT(107.5758285931443 29.7822116459692)",
"LINESTRING(120.18304604073 30.3305841465568,108.805692477062 32.0850224203499)",
"POLYGON((102.797302689433 36.5936423859273,105.519115206186 29.4789248520356,100.346180647351 19.9699202912212))"
];
var geojsons = [];
for(var i=0,len = wkts.length;i var geojson = Terraformer.WKT.parse(wkts[i]); geojsons.push(geojson); } var layer = L.geoJson(geojsons, {onEachFeature: onEachFeature}).addTo(map); });
效果:
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技术博客
http://blog.csdn.NET/gisshixisheng
在线教程
http://edu.csdn.Net/course/detail/799Github
https://github.com/lzugis/
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