the beauty of mapping


Kode Iklan Disini

Wednesday, February 3, 2021

Switching Map Labels Inwards Leaflet


Over the final few days I've been experimenting alongside Map Panes inwards Leafet.js. There is a squeamish introduction to Map Panes inwards the Leaflet documentation if you lot desire to acquire to a greater extent than most how they operate inwards the Leaflet interactive map library.

In a post service yesterday I looked at how you lot could purpose Map Panes to fade map labels inwards in addition to out on acme of a base of operations map. Today I started thinking most why you lot mightiness desire to purpose this characteristic on a map. One argue mightiness live on to switch betwixt ii dissimilar sets of map labels. Using this characteristic you lot could take 1 railroad train of map labels in addition to and then add together a completely dissimilar railroad train of map labels to a map.

By adventure a few days agone I created a railroad train of custom map labels for an Urban Dictionary Map of San Francisco. I accept instantly added ii buttons to this map to allow you lot to switch betwixt existent map labels in addition to my custom map labels based on the Urban Dictionary Definition of Bay Area locations.

The Urban Dictionary Map of San Francisco has 3 base of operations map layers; CartoDB's Light (no labels) map style, a custom made Urban Dictionary labels map in addition to CartoDB's Light - Only Labels map style.

Map Panes inwards Leaflet allows you lot to guild map pane layers. In the Urban Dictionary map CartoDB's Light maps is on the bottom in addition to the ii label alone map styles sit down on acme of this layer. I in addition to then conform the opacity of the ii label map layers to switch betwixt the ii sets of labels. All 3 map layers are thence acquaint at all times. It is simply that the opacity of 1 of the ii map labels layers is ever railroad train to '0', so at anyone fourth dimension you lot tin alone run across the map information layer in addition to 1 of the ii label layers.

You mightiness honor that I've besides used JQuery to add together a fade resultant when you lot switch betwixt the ii sets of map labels. When switching betwixt labels the opacity of the active label layer fades from '100' to '0' earlier switching the opacity of the other label layer to '100'.