You would have to store polygon IDs in onEachFeature feature, layer handler e. Sign up to join this community.
The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Leaflet highlight feature by ID Ask Question. Asked 5 years, 9 months ago. Active 5 years, 9 months ago. Viewed 7k times. I have a map application where: I load polygons as GeoJSON objects I draw all polygons in a single layer I highlight a polygon on mouse hover What I need to do is the following: on mouse hover, I need to highlight multiple polygons I get the list of polygons somehow - irrelevant.
FearUs FearUs 1 1 silver badge 4 4 bronze badges. I already used this as a basis. What I need now is to control the visual appearance of each polygon programmatically Active Oldest Votes.
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Conversely, when you click on the restaurant on the list, it highlights it on the map. To achieve this however, it looks like I need to assign an ID within the markers 2 markers below :.
Question is: How can I assign an marker ID to trigger css change in the corresponding element within my html page? I've been looking for a nice way to do this and as far as I can tell there is still no built-in way using leaflet to give a marker an ID.
I know I'm a bit late to answering this but hopefully it will help others who stumble upon this question. As far as I can tell there are two main issues here:. Problem 1: Unless you save your markers to an object or map, described below, there is no easy programmatic way of accessing them later on. Using a one or more of these options will help address the issues described above.
I'll start with the one mentioned in the previous answer.
Subscribe to RSS
Here is the working penwhich holds all the code found below. Option 1: Save each marker, using a hardcoded or dynamic ID, inside an object. While leaflet doesn't provide a built-in 'id' option for markers, you can add the an ID to the element directly by accessing.
Another approach would be use the layerGroup interface. It provides a method, getLayerthat sounds like it would be perfect get our markers using an ID. However, at this time, Leaflet does not provide any way to specify a custom ID or name.
Leaflet – How to find existing markers, and delete markers?
This issue on Github discusses how this should be done. However you can get and save the auto-generated ID of any Marker or iLayer for that matter like so:.Use markers to call out points on the map. Icon markers are added using the addMarkers or the addAwesomeMarkers functions. Their default appearance is a dropped pin. As with most layer functions, the popup argument can be used to add a message to be displayed on click, and the label option can be used to display a text label either on hover or statically.
You can provide custom markers in one of several ways, depending on the scenario. For each of these ways, the icon can be provided as either a URL or as a file path. If you have several icons to apply that vary only by a couple of parameters i.
Finally, if you have a set of icons that vary in multiple parameters, it may be more convenient to use the iconList function. It lets you create a list of named or unnamed makeIcon icons, and select from that list by position or name.
Leaflet supports even more customizable markers using the awesome markers leaflet plugin. The addAwesomeMarkers function is similar to addMarkers function but additionally allows you to specify custom colors for the markers as well as icons from the Font AwesomeBootstrap Glyphiconsand Ion icons icon libraries. Similar to the makeIconiconsand iconList functions described above, you have makeAwesomeIconawesomeIcons and awesomeIconList functions, which enable you to add awesome icons.
When there are a large number of markers on a map, you can cluster them using the Leaflet. To enable this plug-in, you can provide a list of options to the argument clusterOptionse. Using the freezeAtZoom argument of the markerClusterOptions function you can set the clustering to freeze as a specific zoom level.
Circle markers are much like regular circles see Lines and Shapesexcept that their radius in onscreen pixels stays constant regardless of zoom level. Leaflet for R. Markers Use markers to call out points on the map. You can explicitly tell the marker function which columns contain the coordinate data e. Customizing Marker Icons You can provide custom markers in one of several ways, depending on the scenario.
Getting started Getting started Embedding a 3D map. Camera Moving the camera Adjusting heading and tilt Animating the camera Framing an area Querying camera location and zoom Picking points on the map. Themes Changing the weather Changing the time of day Changing the overall theme. Indoor maps Exiting an indoor map Displaying the name of an indoor map Custom indoor map entrance markers Moving between indoor map floors Finding a route in an indoor map Finding a multipart route Highlighting indoor map entities Picking indoor map entities Querying indoor map entity information Querying indoor map floor outline information Querying indoor map entity outlines Using indoor map load events.
Heatmaps Adding a heatmap Adding a heatmap indoors. Buildings Adding a building highlight Removing a building highlight Placing objects on buildings Picking buildings Querying building information.
LeafletJS - Markers
Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Can I find those polygons by Id using group. The getLayer method of L. LayerGroupL. FeatureGroup and L. You can also assign it as an option like in your example and create a custom get function to retreive the layer:.
The instanceof operator tests whether an object has in its prototype chain the prototype property of a constructor. The getLayer method of Layer Group expects a very specific ID: the one that is automatically assigned by Leaflet when "stamping" a layer e.
If you can work with ID's defined dynamically i. Learn more. Asked 4 years, 4 months ago. Active 4 years, 4 months ago. Viewed 17k times. Polygon [ [ LayerGroup [poly1, poly2, Active Oldest Votes. LayerGroup [marker, polygon] ; layerGroup.
LayerGroup : L.Posted by: admin November 16, Leave a comment. Can anyone help me understand how to do this? Then later you can access it :. But you can only have the latest marker that way, because each time, the var marker is erased by the latest. So one way to go is to create a global array of marker, and you add your marker in the global array. Here is the entire JSFiddle code.
Also here is the full page demo. This link will have, as its id the lat long of the point. This id will then be compared to when you click on one of your created markers and you want to delete it. When you save the reverence to the marker in the adding function the marker can remove it self. No need for arrays. But, in any case you delete an individual marker by looping over your layer groups to find and delete it.
Later this is gotten an a layer option. When you find that match, you. Hope that helps you out! February 22, Jquery Leave a comment.
Questions: I am working on a web-app which should do some function when the user moves away from that tab. I managed to detect tab switching, and also browser switching through window.
Questions: I try to make a horizontal scrolling inside a div. Scrolling happens as the user scrolls the page.
Somehow I manage to scroll the div, but it does not look pleasant. Questions: I have defined a data template with the components which are retrieving user input data and then I am downloading it in form of a text file.This reference reflects Leaflet 1. Check this list if you are using a different version of Leaflet. Returns the instance of Renderer that should be used to render the given Path.
It will ensure that the renderer options of the map and paths are respected, and that the renderers do exist on the map. Opens the specified popup while closing the previously opened to make sure only one is opened at one time for usability. Closes the popup previously opened with openPopup or the given one. Increases the zoom of the map by delta zoomDelta by default.
Decreases the zoom of the map by delta zoomDelta by default. Zooms the map while keeping a specified geographical point on the map stationary e. Zooms the map while keeping a specified pixel on the map relative to the top-left corner stationary. Sets a map view that contains the given geographical bounds with the maximum zoom level possible. Sets the view of the map with a smooth animation like flyTobut takes a bounds parameter like fitBounds.
Restricts the map view to the given bounds see the maxBounds option. Sets the lower limit for the available zoom levels see the minZoom option. Sets the upper limit for the available zoom levels see the maxZoom option. Pans the map to the closest view that would lie inside the given bounds if it's not alreadycontrolling the animation using the options specific, if any. Pans the map the minimum amount to make the latlng visible.
Use paddingpaddingTopLeft and paddingTopRight options to fit the display to more restricted bounds, like fitBounds. If latlng is already within the optionally padded display bounds, the map will not be panned. Checks if the map container size changed and updates the map if so — call it after you've changed the map size dynamically, also animating pan by default.
If options. Tries to locate the user using the Geolocation API, firing a locationfound event with location data on success or a locationerror event on failure, and optionally sets the map view to the user's location with respect to detection accuracy or to the world view if geolocation failed.
Stops watching location previously initiated by map. Adds a new Handler to the map, given its name and constructor function. Creates a new map pane with the given name if it doesn't exist already, then returns it.
The pane is created as a child of containeror as a child of the main map pane if not set. Returns a plain object containing the names of all panes as keys and the panes as values. Runs the given function fn when the map gets initialized with a view center and zoom and at least one layer, or immediately if it's already initialized, optionally passing a function context.
Returns the minimum zoom level of the map if set in the minZoom option of the map or of any layersor 0 by default. Returns the maximum zoom level of the map if set in the maxZoom option of the map or of any layers. Returns the maximum zoom level on which the given bounds fit to the map view in its entirety.
If inside optional is set to truethe method instead returns the minimum zoom level on which the map view fits into the given bounds in its entirety. Returns the bounds of the current map view in projected pixel coordinates sometimes useful in layer and overlay implementations. Returns the projected pixel coordinates of the top left point of the map layer useful in custom layer and overlay implementations. Returns the world's bounds in pixel coordinates for zoom level zoom.