Questions tagged [openlayers]
Use when the version you are using of the OpenLayers JavaScript client toolkit is 3 or later
2,711
questions
0
votes
0answers
11 views
OpenLayers 5 clusters and cql filters [duplicate]
I try to add clusters on my map with a layer controled by a CQL filter.
When I put bbox parameter on my link, it says "bbox and cql_filter both specified but are mutually exclusive". But when I drop ...
1
vote
1answer
23 views
Detecting CTRL key in OpenLayers select interaction?
I have an OpenLayers select interaction with an add condition event handler.
const addCondition = (event: MapBrowserEvent):boolean => {
return true;
}
In this handler I need to determine if ...
0
votes
0answers
30 views
Performance dropping when I have a large amount of features on my map [closed]
I am working with OpenLayers 6 in Angular. The performance was working well, but when I have a map with around 200 GeometryCollections and 30 Point features the web page becomes almost unresponsive.
...
0
votes
1answer
44 views
Custom bootstrap popover in OpenLayers 5
I try to set different custom for my bootstraps popovers : "popup" and "popup_ancien".
I can change CSS of my popovers together, by .popover-content or .popover-title, but how can I have two distinct ...
0
votes
1answer
22 views
GeoServer WMS GetFeatureInfo only returning one Feature?
This is how I get feature info from a group layer when clicking on the map (using WMS GetFeatureInfo):
let view = this.map.getView()
let viewResolution = view.getResolution();
var source = this....
0
votes
1answer
19 views
Could not locate LayerGroup in catalog GeoServer + OpenLayers?
I have a Layer Group in GeoServer which contains 4 regular layers (layers and group belonging to "TRAC" workspace). I'm trying to do the following on map clicking:
featureRequestGS = new WFS()....
0
votes
2answers
17 views
Update WMS layer OpenLayers + Angular?
I have an Angular map app with a WMS layer initialized as following:
this.layer =
new ImageLayer({
source: new ImageWMS({
url: url,
params: {LAYERS: this.getActiveLayers()},
projection: ...
0
votes
1answer
34 views
Filter layers on layer group with OpenLayers and GeoServer?
I have a layer group with multiple layers as following
In Angular I created an OpenLayers map adding the group layer like this:
this.capaPropia =
new ImageLayer({
source: new ImageWMS({
url: ...
0
votes
0answers
19 views
OpenLayers point ID (set, get)? [closed]
function addInteractions() {
draw = new ol.interaction.Draw({
source: source,
type: typeSelect.value
});
/* 포인트에 아이디 부여 START*/
draw.on('drawend', function (evt) {
...
1
vote
1answer
71 views
Show Cypriot names for Cyprus on OpenStreetMap map
How can I show only cypriot names (instead of Turkish) in OpenLayers map for the northern Cyprus side?
By default OpenStreetMap shows both Turkish and Cypriot.
https://www.openstreetmap.org/#map=13/...
1
vote
1answer
27 views
I don't understand the expected specs for GeoJSON data in OpenLayers whether readFeatures() / readFeature() / readGeometry() are used?
I work on a GIS web app using GeoDjango and I struggle reading and displaying a multipoint geometry on my map.
If I serialize my GEOSGeometry object to GeoJSON, I can get the following JSON file :
{ ...
1
vote
0answers
37 views
OpenLayers 6 - reprojected GeoJSON data not displaying on map
I'm using latest OpenLayers (6.1.1) and proj4js 2.6.0 to display a multipoint geometry.
I first define my input data project with proj4 then create an open layer vector source as follow:
proj4.defs("...
3
votes
0answers
48 views
Multiple color styles in one GeoServer layer
I have a GeoServer layer coming from a shapefile and I am using it with OpenLayers. I want to put multiple colors in the same layer depending on their attributes. How can I put multiple colors on a ...
2
votes
0answers
26 views
Default or wrong behavior with multiple clicks in intersection zone in OpenLayers?
We use Vue.js and OpenLayers 4.6.5 in our project. I've noticed the following behavior - when I have two intersected polygons with some styles and click first time inside the intersection area (look ...
2
votes
0answers
33 views
Using WFS-Transaction to update attribute's value of certain feature?
I want to edit the attribute's value of certain feature. I have managed to display the feature data from GeoServer layer to browser using OpenLayers. I also have managed to display some feature's ...
1
vote
0answers
20 views
OpenLayers 6 TileWMS over server-side proxy script
Let's say I've simple PHP proxy script:
$ch = curl_init($_GET['url']);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$output = curl_exec($ch);
curl_close($ch);
...
1
vote
1answer
34 views
Map Graticule in UTM projections (openlayers)
I'd like to know if there is a way to display the Graticule labels on a different projection like UTM.
Visit this link and search for EPSG: "31982" (UTM 22s SIRGAS2000) projection to understand the ...
2
votes
1answer
31 views
OpenLayers declutter styling
declutter does not working as it should be for point geometry, it should avoid overlapping labels and not styling format or geometry. when I set it true for points, points are starting disappear when ...
0
votes
1answer
34 views
Map panning using mouse wheel in OpenLayers 3+ [closed]
How to achieve functionality that user could scroll through map by pressing mouse wheel and dragging map like he can do it by pressing left mouse button?
2
votes
1answer
50 views
+50
Adding border on icons in openlayers
I am trying to add borders to the icons in open layers and I am able to do so but when i try to increase the thickness of the border, the border is not uniform and at one side becomes larger than ...
0
votes
1answer
19 views
How to Update Control When Layers are Changed
I have a control that allows the user to switch between satellite/street tiles. I want the text to update to show the next tile text when appropriate. Currently I am using the Control.render hook but ...
1
vote
2answers
48 views
Openlayers shows and paints polygons in the wrong place on the map
In the following code I call a geoserver service.
Initialize map
var map = new ol.Map({
target: 'map',
layers: [
new ol.layer.Tile({
source: new ol.source....
1
vote
0answers
38 views
Adding border style to country which has geometry type polygon? [closed]
I have a drop down list and when I select a country name and the map goes to this country, I want to add a specific border style to this country (polygon geometry).
1
vote
1answer
60 views
Zoom level issue with openlayers 5 and custom tile generation using gdal2tiles
Now i have changed my code but the output is still not what is expected, because the resolution provided is of 0 - 8 zoom but my minZoom starts from 12 itself,
will i get my tiles rendered ?? how ...
1
vote
1answer
23 views
Error: getGeometry is not a function
I have a GeoJSON file, I can select one of its objects and convert it to a feature object, I need to zoom to this polygon on the map so here is my code:
part of JSON object that I convert:
{ "type":...
1
vote
1answer
44 views
How remove geometry vertexes on hover OpenLayers 3+
I am using modify interaction and would like to be able to delete vertexes by either clicking delete + mouse on the vertex or delete + hover vertex. delete + mouse works, delete + hover does not as ...
2
votes
0answers
41 views
Set HTML ID or class for an icon in OpenLayers [closed]
I wanted to know if there is any way to set an HTML ID for an icon in OpenLayers. For example, If I set an icon with HTML ID "icon1", I want to be able to access it using document.getElementById("...
1
vote
1answer
91 views
Smooth line animation on map
I tried to produce a smooth line animation with below code. How can I do this?
I used OpenLayers with Angular. It works as a drawing line but I want more smooth movement something like this (http://...
1
vote
0answers
30 views
Predict the movement of an object on the map considering geodetic calculations in OpenLayers 3?
I need to represent the movement of an object (which has its own speed) but considering the geodedic calculations. I'm working with EPSG:3857 projection.
How can I do this?
1
vote
0answers
48 views
Drawing circle of specified radius in meters using OpenLayers 3
I need to present a mask where the user put the radius (in meters) to draw a circle. How can I do this? Do I have to do geodesic calculations to get a circle that follows the projection of the map (...
0
votes
0answers
39 views
Dwithin not working on EPSG:4326
I have a layer in GeoServer called "pois". The layer is in EPSG:4326. Also, I have another layer but it is in: EPSG:31256
The problem that I'm having is that I'm trying to reach an all points around ...
3
votes
0answers
39 views
Canvas element with 'width: 0' in OpenLayers 6 instance on Vue.js
I am using Vue components to generate multiple instances of OpenLayers in the same parent component.
Ultimately I am attempting to export an image of each instance of OpenLayers using the html-to-...
1
vote
1answer
22 views
How to build XYZ layer source for custom scales?
I have tile images in scales: 4, 6, 8, 12, 14 (in subdirectories). In smaller scale tiles are in higher zoom (in 14 scale zoom is minimal, in 4 scale zoom is maximal). I have prameters as below for ...
2
votes
0answers
34 views
Tiles map server - How to provide the same tiles on lower zoom?
I have my own map server defined like below. This is one layer, but have 4 layers for other zooms. Unfortunately for zoom lower then 8 I don't have tile images. Is possible to make zoom out lower than ...
0
votes
0answers
19 views
WMTS service is returning incomplete results
Observation:
In GWC Demos page reached through the GeoServer admin UI, I am attempting to view a layer group.
Some requests are working:
https://serverUrl:8443/geoserver/gwc/service/wmts?layer=...
2
votes
0answers
58 views
OpenLayer's graticule doesn't properly work
I am making a map of Krasnoyarskiy krai subject of Russia. I have defined a custom projection that should be used for this area using proj4 string. I need to show lat/long grid only for this territory....
1
vote
0answers
40 views
Show overlay on top when zoom out in OpenLayers 4.6.5?
I have a tile layer, three vector layers. The tile layer has lots of overlays in it. I want to put vector layers on top when zooming out the map using OpenLayers 4.6.5. I tried to apply setLayerIndex ...
3
votes
1answer
40 views
OpenLayers Circle Style Update During zoom
I am using a stylefunction to dynamically draw an 'image' based on the feature geometry. The style function is dependent on the resolution (zoom level) so that the drawn items are a certain consistent ...
2
votes
0answers
42 views
Get Feature id in OpenLayers from GeoServer/PostGIS
With OpenLayers, I'm creating layers like ol.layer.VectorTile
var projection_epsg_name = 'EPSG:900913';
var geoserverLayerName = 'teste:map_shape2';
const tileLoadURL= 'http://127.0.0.1:8081/...
1
vote
1answer
47 views
OpenLayers tiles size vs screen size
I'm using OpenLayers v6.1.1 and I would like to ask you to confirm that my understanding is correct. Take a look at below image:
Am I right that there might be a situation that if I would take all ...
1
vote
1answer
23 views
How to dynamically rotate image in custom style in OpenLayers
I'm trying to make a custom Style in OpenLayers that replaces a path (Coordinate list) with an image at the end of the path pointing in the direction for the path (like the head of a snake). I am ...
0
votes
2answers
30 views
OpenLayers data format [closed]
I am just running an application using OpenLayers. All data is transfered from my database in GEOJSON format. My current task is to review the implementation of the data format. Important ...
2
votes
1answer
33 views
Getting tile URL in OpenLayers
I'm using Openlayers v6.1.1 and I'm trying to get URLs of all tiles in the current map extent. I was trying to do it in the following way:
var tileUrlFunction = tileSource.getTileUrlFunction(),
...
2
votes
1answer
27 views
OpenLayers: Overlay doesn't work
I'm following an OpenLayers tutorial and in my current lesson we wanted to add an overlay to the webmap and when I click on the map it gives me the coordinates of that map. However, for me it doesn't ...
0
votes
0answers
45 views
Get projection or calculate latitude and longitude from a central point [duplicate]
I have a central point (with longitude) and I measure a radius (30º) degrees, I have a distance of 200 KM. Problem: know with precision what is the latitude and longitude of the point that is 200 km ...
1
vote
0answers
22 views
OpenLayers.Format.WMTSCapabilities vs ol.source.WMTS
Struggling with getting a WMTS layer working using OL2. I have it working with OL3 but unfortunately I'm working with legacy code and it needs to work on OL2.
Using OL3 (working)
var xml = '...'; //...
2
votes
1answer
14 views
Can't get the coordinates from OpenLayers polygon drawing
I'm building an app using Ionic 4 included OpenLayers.
After drawing the polygon, I can see the coordinates on the console.log but I don't have a solution to get these coordinates.
Here is what I ...
1
vote
0answers
29 views
Use a WFS-T layer in d3.js without adding a background map?
I am currently working on a d3.js project and would like to include a WFS-T layer to my SVG map to display and update location data stored in a PostGIS database. I know that I need to transform my ...
1
vote
0answers
81 views
WMS layer is displayed with ruined geometry in OpenLayers [duplicate]
I want to display a shapefile in OpenLayers using MapServer 7.6.
It is shown properly in the browser using the mapfile's link.
But when I try to display it in OpenLayers, the geometry is completely ...
1
vote
1answer
61 views
Draw a line of desired length and bearing in OpenLayers? [duplicate]
How can I create a straight line when I know the coordinates of the first point, and I know the distance and angle to the end point but I don't know the coordinates of the end point?
Example:
...
