leaflet-measure
Advanced tools
Coordinate, linear, and area measure control for Leaflet maps. Extends L.Control.
Clone.. git clone https://github.com/ljagis/leaflet-measure.git
Install with Bower.. bower install leaflet-measure
Install with npm.. npm install leaflet-measure
leaflet-measure.min.js or leaflet-measure.jsInclude the Leaflet Source, leaflet-measure.min.js, and associated CSS stylesheets in your HTML page
<!doctype HTML>
<html>
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.7.3/leaflet.css">
<link rel="stylesheet" href="leaflet-measure.css">
</head>
<body>
<script src="http://cdn.leafletjs.com/leaflet-0.7.3/leaflet.js"></script>
<script src="leaflet-measure.min.js"></script>
<script>
// Start creating maps
</script>
</body>
</html>
var L = require('leaflet');
require('leaflet-measure');
// Start creating maps
leaflet-measure adds L.Control.Measure. This control may be used with the standard Leaflet control workflows described in the Leaflet docs.
The measure control can be instantiated directly and added to a map:
var myMap = L.map('mapElementId', options);
var measureControl = new L.Control.Measure(options);
measureControl.addTo(myMap);
or instantiated via the factory:
var myMap = L.map('mapElementId', options);
var measureControl = L.control.measure(options);
measureControl.addTo(myMap);
or added to a map using map options:
var myMap = L.map('mapElementId', {
measureControl: true
});
{ position: 'topright' }
Standard Leaflet control position options
{ primaryLengthUnit: 'feet', secondaryLengthUnit: 'miles' }
Units used to display length results. secondaryLengthUnit is optional.
Valid values are feet, meters, miles, and kilometers
{ primaryAreaUnit: 'acres', secondaryAreaUnit: undefined }
Units used to display area results. secondaryAreaUnit is optional.
Valid values are acres, hectares, sqfeet, sqmeters, and sqmiles
{ activeColor: '#ABE67E' }
Base color to use for map features rendered while actively performing a measurement. Value should be a color represented as a hexadecimal string.
{ completedColor: '#C8F2BE' }
Base color to use for features generated from a completed measurement. Value should be a color represented as a hexadecimal string.
popupOptions: { className: 'leaflet-measure-resultpopup', autoPanPadding: [10, 10] }
Options applied to the popup of the resulting measure feature. Properties may be any standard Leaflet popup options.
Custom units to make available to the measurement calculator. Packaged units are feet, meters, miles, and kilometers for length and acres, hectares, sqfeet, sqmeters, and sqmiles for areas. Additional unit definitions can be added to the packaged units using this option.
Define units as
{
someNewUnit: {
factor: 0.001, // Required. Factor to apply when converting to this unit. Length in meters or area in sq meters will be multiplied by this factor.
display: 'My New Unit', // Required. How to display in results, like.. "300 Meters (0.3 My New Unit)".
decimals: 2 // Number of decimals to round results when using this unit. `0` is the default value if not specified.
},
myOtherNewUnit: {
factor: 1234,
display: 'My Other Unit',
decimals: 0
}
}
{ captureZIndex: 10000 }
Z-index of the marker used to capture measure clicks. Set this value higher than the z-index of all other map layers to disable click events on other layers while a measurement is active.
{ localization: 'en' }
Locale to translate displayed text.
Available locales include en (default), es, fr, it, nl, and ru.
{ decPoint: '.', thousandsSep: ',' }
Decimal point and thousands separator used when displaying measurements. If not specified, values are defined by the localization.
You can subscribe to the following events on the Map using these methods
Fired when measurement starts
Fired when measurement finishes with results of the measurement. Results data includes:
area: Area of a polygon measurement in sq meters. 0 for measurements with less than 3 points.
areaDisplay: Area formatted as displayed in the popup.
lastCoord: Last point clicked in both decimal degrees and degress/min/seconds.
length: Length of the measurement in meters. 0 for measurements with less than 2 points.
lengthDisplay: Length formatted as displayed in the popup.
pointCount: Number of points directly added by the user.
points: Array of points as LatLng used to calculate the measurement. Number of items in the array may differ from pointCoint because an additional point is added to close polygons during polygon measurements.
Map features may be styled using CSS SVG style attributes. Features generated from leaflet-measure measurements are given the following class names:
layer-measurearea: Feature displaying area of an active measurement
layer-measureboundary: Feature displaying the linear path of an active measurement
layer-measurevertex: Feature added at each vertex (measurement click) of an active measurement
layer-measuredrag: Symbol following cursor while moving during an active measurement
layer-measure-resultarea: Feature added to the map as a permanent layer resulting from an area (3+ points) measurement
layer-measure-resultline: Feature added to the map as a permanent layer resulting from a linear (2 point) measurement
layer-measure-resultpoint: Featured added to the map as a permanent layer resulting from a point (single click) measurement
FAQs
Coordinate, linear, and area measure tool for Leaflet maps
The npm package leaflet-measure receives a total of 3,199 weekly downloads. As such, leaflet-measure popularity was classified as popular.
We found that leaflet-measure demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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