Openlayers中Feature與WKT之間的轉換，Feature座標系的轉換

時間 2021-01-02

標籤 spa orm get form class transform 方法欄目 Java 简体版

原文原文鏈接

一、Feature 轉WKT 且帶座標系的轉換spa

   var strwkt = new ol.format.WKT().writeFeature(feature, {
                dataProjection: targetcrs,//目標座標系
                featureProjection:crs //當前座標系
            });orm

二、WKT轉Feature get

var newfeature = new ol.format.WKT().readFeature(strwkt);it

三、Feature 座標系轉換（支持全部圖形）io

var geom = feature.getGeometry().transform(crs, targetcrs);
feature.setGeometry(geom);form

四、利用WKT轉換Feature座標系（這種不支持GEOMETRY不爲Circle）class

var strwkt = new ol.format.WKT().writeFeature(feature, {
                dataProjection: targetcrs,
                featureProjection:crs
            });
            var newfeature = new ol.format.WKT().readFeature(strwkt);transform

注意：方法4獲得的Feature 會沒有原始Feature對應的Properties
方法