Openlayers 从多个层获取信息
我想在div中显示每个层的信息,而不是弹出窗口,每个层都有一个基于其字段的响应。首先,我做这件事没有问题。我正在使用map.on方法,就好像我要在弹出窗口中显示信息一样。我怎么能这样做Openlayers 从多个层获取信息,openlayers,openlayers-6,Openlayers,Openlayers 6,我想在div中显示每个层的信息,而不是弹出窗口,每个层都有一个基于其字段的响应。首先,我做这件事没有问题。我正在使用map.on方法,就好像我要在弹出窗口中显示信息一样。我怎么能这样做 var ICES = new ol.layer.Image({ title:'ICES Areas', baseLayer:false, source: new ol.source.ImageWMS({ url: 'https://server.com/ows',
var ICES = new ol.layer.Image({
title:'ICES Areas',
baseLayer:false,
source: new ol.source.ImageWMS({
url: 'https://server.com/ows',
params: {'LAYERS': 'ICES'},
//serverType: 'geoserver',
}),
visible:true,
active:false,
opacity: 0.4,
displayInLayerSwitcher:false
});
//Observations
var vectorObservations = new ol.source.Vector({
url: 'data/observations.json',
projection: 'EPSG:4326',
format: new ol.format.GeoJSON(),
});
var observations = new ol.layer.Vector({
name: 'Fish',
//preview: "images/fish.jpg",
source: vectorObservations,
visible:false,
displayInLayerSwitcher: false,
style: observa,
});
var vectorDistribution = new ol.source.Vector({
url: 'data/distribution.json',
projection: 'EPSG:4326',
format: new ol.format.GeoJSON(),
});
var distribution = new ol.layer.Vector({
name: 'Distribution',
source: vectorDistribution,
visible:false,
displayInLayerSwitcher: false,
style: distICES,
maxZoom:9,
//minResolution: 200,
//maxResolution: 2000,
});
map.on('singleclick', function (evt) {
//var coordinate = evt.coordinate;
//var hdms = toStringHDMS(toLonLat(coordinate));
var feature = map.forEachFeatureAtPixel(evt.pixel,
function(feature, layer) {
return feature;
});
if (feature) {
var field1 = document.getElementById('autorOb');
field1.innerHTML = feature.get('autor');
var field2 = document.getElementById('dateOb');
field2.innerHTML = feature.get('obs_date');
var field3 = document.getElementById('ImgOb');
field3.innerHTML = '<img src="'+feature.get('imagen')+'"/>';
var field4 = document.getElementById('PezOb');
field4.innerHTML = feature.get('scientific_name');
var field5 = document.getElementById('LocaOb');
field5.innerHTML = feature.get('location');
}
//overlay.setPosition(coordinate);
});
var ICES=new ol.layer.Image({
标题:“ICES区域”,
基层:假,
来源:新ol.source.ImageWMS({
网址:'https://server.com/ows',
参数:{'LAYERS':'ICES'},
//服务器类型:“地理服务器”,
}),
可见:对,
活动:错误,
不透明度:0.4,
displayInLayerSwitcher:错误
});
//观察
var vectorObservations=新ol.source.Vector({
url:'data/observations.json',
投影:‘EPSG:4326’,
格式:新建ol.format.GeoJSON(),
});
var观测值=新的ol.layer.Vector({
名字:‘鱼’,
//预览:“images/fish.jpg”,
资料来源:矢量观测,
可见:假,
displayInLayerSwitcher:错误,
风格:observa,
});
var vectorDistribution=新ol.source.Vector({
url:'data/distribution.json',
投影:‘EPSG:4326’,
格式:新建ol.format.GeoJSON(),
});
变量分布=新的ol.layer.Vector({
名称:'分发',
资料来源:矢量分布,
可见:假,
displayInLayerSwitcher:错误,
风格:distICES,
最大缩放:9,
//决议:200,
//决议草案:2000年,
});
map.on('singleclick',函数(evt){
//var坐标=evt坐标;
//var hdms=toStringHDMS(toLonLat(坐标));
var feature=map.forEachFeatureAtPixel(evt.pixel,
功能(特征、图层){
返回特性;
});
如果(功能){
var field1=document.getElementById('autorOb');
field1.innerHTML=feature.get('autor');
var field2=document.getElementById('dateOb');
field2.innerHTML=feature.get('obs_date');
var field3=document.getElementById('ImgOb');
field3.innerHTML='';
var field4=document.getElementById('PezOb');
field4.innerHTML=feature.get('scientific_name');
var field5=document.getElementById('LocaOb');
field5.innerHTML=feature.get('location');
}
//叠加。设置位置(坐标);
});
您不应该只返回找到的第一个功能,而应该遍历所有功能并建立输出
map.on('singleclick', function (evt) {
var features = map.getFeaturesAtPixel(evt.pixel);
if (feature.length > 0) {
var field1 = document.getElementById('autorOb');
field1.innerHTML = '';
var field2 = document.getElementById('dateOb');
field2.innerHTML = '';
var field3 = document.getElementById('ImgOb');
field3.innerHTML = '';
var field4 = document.getElementById('PezOb');
field4.innerHTML = '';
var field5 = document.getElementById('LocaOb');
field5.innerHTML = '';
features.forEach(function(feature){
field1.innerHTML += feature.get('autor');
field2.innerHTML += feature.get('obs_date');
field3.innerHTML += '<img src="'+feature.get('imagen')+'"/>';
field4.innerHTML += feature.get('scientific_name');
field5.innerHTML += feature.get('location');
});
}
});
map.on('singleclick',函数(evt){
var features=map.getFeaturesAtPixel(evt.pixel);
如果(feature.length>0){
var field1=document.getElementById('autorOb');
field1.innerHTML='';
var field2=document.getElementById('dateOb');
field2.innerHTML='';
var field3=document.getElementById('ImgOb');
field3.innerHTML='';
var field4=document.getElementById('PezOb');
field4.innerHTML='';
var field5=document.getElementById('LocaOb');
field5.innerHTML='';
features.forEach(函数(feature){
field1.innerHTML+=feature.get('autor');
field2.innerHTML+=feature.get('obs_date');
field3.innerHTML+='';
field4.innerHTML+=feature.get('scientific_name');
field5.innerHTML+=feature.get('location');
});
}
});
通过将结果添加到HTML表中的新行,可以获得更整洁的输出