Is there a way to create a legend in OpenLayers?
Actually, OpenLayers doesn’t support what you want (or at least I don’t know how to do it). As Chau told you, LegendPanel from GeoExt is your only hope. As one option, you could create SVG elements with same attributes like in OL3 style.
How to get image to match OpenLayers style?
The closest you can get to what you want with plain OpenLayers is if you use WMS service instead of WFS or whatever method you use to fetch features. WMS has request type GetLegendGraphic that, as name suggests, lets you dynamically fetch image that shows what style is applied to layer.
Which is an example of a GeoJSON feature?
Example of GeoJSON features. Example of GeoJSON features. main.js import ‘ol/ol.css’; import Circle from ‘ol/geom/Circle’; import Feature from ‘ol/Feature’; import GeoJSON from ‘ol/format/GeoJSON’; import Map from ‘ol/Map’; import View from ‘ol/View’; import {Circle as CircleStyle, Fill, Stroke, Style} from ‘ol/style’; import {OSM, Vector as
How to create a legend in a SVG?
As Chau told you, LegendPanel from GeoExt is your only hope. As one option, you could create SVG elements with same attributes like in OL3 style. Here’s example for circle style (you would need similar methods also other types): Since SVG manipulation with jQuery is bit different from HTML elements, I’m converting object to string in return.
How to export a map as a PNG image?
This example uses OpenLayers v 6.5.0. The latest is v 6.5.0 . Example of exporting a map as a PNG image. Example of exporting a map as a PNG image.
How to create a control object in OpenLayers?
map is our map object we just created, and addControl is a function call we make that -takes in- an OpenLayers Control object and adds it to the map. In this case, we are passing in new OpenLayers.Control.OverviewMap (). OverviewMap is the class, and we are creating an object from the class by typing new before it.
Where are the invisible controls on openlayers.com?
Most controls that are ‘visible’ (e.g. the layer switcher control) can be placed either inside or outside of the map. The ‘invisible’ controls, such the control that allows you to navigate the map when you drag the map with your mouse, are either there are they aren’t – so we can’t really ‘place’ them outside the map.