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[英]Openlayers 3 circles from geojson not working with layer tile source different from TileWMS
[英]TileWMS' not showing after upgrading OpenLayers from 4.6.5 to 5.3.0
我有一個OpenLayers 4.6.5應用程序,其中顯示了地圖,並且在其上面還可以選擇打開和關閉一些疊加層。
疊加層類型為TileWMS,並且看起來效果很好。
最初,我像這樣遠程調用了OpenLayers:
<script src="https://openlayers.org/en/v4.6.5/build/ol.js" type="text/javascript"></script>
但是我需要將其存儲在本地,同時升級到5.3.0。 因此,我下載了v5.3.0-dist.zip,添加了文件並將其替換為:
<script src="./lib/ol/ol.js"></script>
除了TileWMS之外,其他所有內容似乎都可以正常工作,而后者根本沒有顯示。
據我所知, 升級說明中沒有任何內容,表明某些內容已經更改。
我已嘗試排除JavaScript不必要的部分,所以請告知我是否遺漏了太多內容:
var token = "123456thisisnotmytoken";
var myProjection = new ol.proj.Projection({
code: projCode,
units: "m",
extent: [120000, 5661139.2, 1378291.2, 6500000]
});
var projection = GetProjection(myProjection);
var projectionExtent = projection.getExtent();
const map = new Map({
target: "map",
layers: [
new Group({
"title": "Base maps",
layers: [
new ol.layer.Tile({...
}),
new ol.layer.Tile({...
})
]
}),
new Group({
"title": "Overlays",
layers: [
new ol.layer.Tile({
title: "Matrikel",
type: "overlay",
visible: true,
opacity: 1.0,
zIndex: 1000,
source: new ol.source.TileWMS({
url: "https://services.kortforsyningen.dk/mat?token=" + token,
params: {
"LAYERS": "MatrikelSkel,Centroide",
"VERSION": "1.1.1",
"TRANSPARENT": "true",
"FORMAT": "image/png",
"STYLES": ""
},
})
}),
new ol.layer.Tile({
title: "Hillshade",
type: "overlay",
visible: false,
opacity: 1.0,
zIndex: 900,
source: new ol.source.TileWMS({
url: "https://services.kortforsyningen.dk/dhm?token=" + token,
params: {
"LAYERS": "dhm_terraen_skyggekort_transparent_overdrevet",
"VERSION": "1.1.1",
"TRANSPARENT": "true",
"FORMAT": "image/png",
"STYLES": ""
},
})
})
]
}),
],
view: view
});
map.addControl(new ol.control.LayerSwitcher());
我知道第二個TileWMS默認是隱藏的,但是我嘗試在LayerSwitcher中將其打開和關閉,該操作在升級之前就起作用了。
任何建議pn我如何解決這個問題?
問題出在我看來是投影!
我從
GetProjection(“ EPSG:25832”)
至
myProjection
所以現在看起來像這樣:
var view = new ol.View({
center: [606985, 6231744], // EPSG:25832
zoom: 2,
resolutions: [1638.4, 819.2, 409.6, 204.8, 102.4, 51.2, 25.6, 12.8, 6.4, 3.2, 1.6, 0.8, 0.4, 0.2],
projection: myProjection,
minZoom: 2,
})
myProjection看起來像這樣:
var projCode = "EPSG:25832";
var myProjection = new ol.proj.Projection({
code: projCode,
units: "m",
extent: [120000, 5661139.2, 1378291.2, 6500000]
});
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