How to Group layers in openlayer layerswitcher V3?
OpenLayers LayerSwitcher Grouped layer list control for an OpenLayer v3/v4 map. All layers should have a title property and base layers should have a type property set to base. Group layers (ol.layer.Group) can be used to visually group layers together.
How to show the current state of layers in OpenLayers?
Show the layer panel. Hide the layer panel. Re-draw the layer panel to represent the current state of the layers. Set the map instance the control is associated with. The map instance. Static Call the supplied function for each layer in the passed layer group recursing nested groups.
Which is the best layer switcher for OpenLayers 2?
LayerSwitcher in OpenLayers 2. In OpenLayers 3+, there are currently two ways to have a layer switcher; the easiest one is to use a third-party one; and the most versatile is to make it yourself. In this post we will use a third-party one. The currently fashionable layer switcher control is Matt Walker’s LayerSwitcher.
Which is the best version of Ol layerswitcher?
Compatible with OpenLayers version 3, 4, 5 and 6 (see note in Install – Parcel, Webpack etc. regarding installing the appropriate version of ol-layerswitcher for OpenLayers). The examples demonstrate usage and can be viewed online thanks to raw.githack.com: Create a layer switcher control.
What are the non base layers in OpenLayers 3 +?
The overlay layers (also called non-base layers) was stuff that could be superimposed on the background. OpenLayers 3+ doesn’t have this distinction. It just draws layers one on top of the other. If a layer is opaque, it hides the layers behind it.
What do you need to know about the layerswitcher property?
To be shown in the LayerSwitcher layers should have a title property; base layers should have a type property set to base. Group layers ( LayerGroup) can be used to visually group layers together; a group with a fold property set to either open or close will be displayed with a toggle.