Leaflet.Geonames

A GeoNames powered geocoding search control for Leaflet.

It allows you to enter a placename, display a list of search results using GeoNames, and select a placename to zoom to.

Location markers remain on the map until the search field is cleared. Click on icon to open / close unless alwaysOpen is set to true (in which case clicking on the icon does nothing).

*Tested with Leaflet 1.1.0

Install

From NPM:

npm install leaflet-geonames

Usage

Include the CSS:

<link rel="stylesheet" href="L.Control.Geonames.css" />

This control uses Google Material Icons by default.

Include the JavaScript:

<script src="L.Control.Geonames.min.js"></script>

Example usage:

var control = L.control.geonames({
    //position: 'topcenter',  // in addition to standard 4 corner Leaflet control layout, this will position and size from top center
    geonamesURL: '//api.geonames.org/searchJSON',  // override this if using a proxy to get connection to geonames
    username: '',  // Geonames account username.  Must be provided
    zoomLevel: null,  // Max zoom level to zoom to for location.  If null, will use the map's max zoom level.
    maxresults: 5,  // Maximum number of results to display per search
    className: 'leaflet-geonames-icon', //class for icon
    workingClass: 'leaflet-geonames-icon-working', //class for search underway
    featureClasses: ['A', 'H', 'L', 'P', 'R', 'T', 'U', 'V'],  // feature classes to search against.  See: http://www.geonames.org/export/codes.html
    baseQuery: 'isNameRequired=true',  // The core query sent to GeoNames, later combined with other parameters above
    position: 'topleft',
    showMarker: true, //Show a marker at the location the selected location
    showPopup: true, //Show a tooltip at the selected location
    adminCodes: { // filter results by a country and state.  Values can be strings or return by a function.
        country: 'us',
        adminCode1: function() {return 'wa'}
    },
    lang: 'en', // language for results
    bbox: {east:-121, west: -123, north: 46, south: 45}, // bounding box filter for results (e.g., map extent).  Values can be an object with east, west, north, south, or a function that returns that object.
    alwaysOpen: false  //if true, search field is always visible
});
map.addControl(control);

For mobile responsive view, use position: 'topcenter' and alwaysOpen: true options. See mobile example using a mobile device or emulator.

Events

Search Event

This control fires a search event with the value of search parameters:

control.on('search', function(e){console.log(e.params)});

results in {q: "oregon", lang: "en"}

Select Event

This control fires a select event when an option was selected from list, with the full response JSON from geonames:

control.on('select', function(e){console.log(e.geoname)});

results in {adminCode1: "OR", lng: "-120.50139", geonameId: 5744337, ...}

Demos:

Changes

See changelog

Credits:

Developed with support from the South Atlantic Landscape Conservation Cooperative, and maintained with support from Peninsular Florida LCC.

Some ideas derived from L.GeoSearch.

yemling / leaflet.geonames Goto Github PK