Leaflet.PolylineMeasure

• Leaflet Plugin to :triangular_ruler: measure distances of simple lines as well as of complex polylines.
• Measuring in metric system (metre, kilometre), in imperial system (foot, landmile), or in nautical miles.
• lines are drawn as arcs and distances are calculated considering Great.circle distance which is the shortest path between 2 points on Earth.
• To finish drawing a line just doubleclick, or singleclick onto the last (=orange) point, or press "ESC"-key.
• Moving of line's points afterwards is possible by clicking and draging them. (This feature can not be guaranteed to work on every mobile browser using touch input, e.g. with Chrome Mobile it isn't working right now)
• Arrows indicating the real midways of the line's great-circle distances, not their optical middle which is different due to projection, especially in high latitudes.
• It is an evolution of jtreml's Plugin leaflet.measure since the original plugin hasn't been bugfixed for years. I modified it to work again with Leaflet v1.0 and newer (still runs with Leaflet v0.7) and added some optical improvements.

Demos

• Please take a look at Demo 1 (metre units, with Clear-button and Units-button) or Demo 2 (landmile units, without Unit-button) or Demo 3 (nauticalmile units, without Unit-button and Clear-button)

Usage

Add 2 code lines within your HTML-file to load the .css and .js files of the plugin:

<link rel="stylesheet" href="https://ppete2.github.io/Leaflet.PolylineMeasure/Leaflet.PolylineMeasure.css" />
<script src="https://ppete2.github.io/Leaflet.PolylineMeasure/Leaflet.PolylineMeasure.js"></script>

Add 1 code line within your Javascript-file to add the plugin's control into your Leaflet map.

L.control.polylineMeasure(options).addTo(map);

Default options

options = {
    position: 'topleft',                    // Position to show the control. Possible values are: 'topright', 'topleft', 'bottomright', 'bottomleft'
    unit: 'metres',                         // Show imperial or metric distances. Values: 'metres', 'landmiles', 'nauticalmiles'
    measureControlTitleOn: 'Turn on PolylineMeasure',   // Title for the control going to be switched on
    measureControlTitleOff: 'Turn off PolylineMeasure', // Title for the control going to be switched off
    measureControlLabel: '↦',         // HTML to place inside the control
    measureControlClasses: [],              // Classes to apply to the control
    backgroundColor: '#8f8',                // Background color for control when selected
    cursor: 'crosshair',                    // Cursor type to show when creating measurements
    clearMeasurementsOnStop: true,          // Clear all the measurements when the control is unselected
    showMeasurementsClearControl: false,    // Show a control to clear all the measurements
    clearControlTitle: 'Clear Measurements',// Title text to show on the clear measurements control button
    clearControlLabel: '&times',            // Clear control inner html
    clearControlClasses: [],                // Collection of classes to add to clear control button
    showUnitControl: false,                 // Show a control to change the units of measurements
    tempLine: {                             // Styling settings for the temporary dashed line
        color: '#00f',                      // Dashed line color
        weight: 2                           // Dashed line weight
    },          
    fixedLine: {                            // Styling for the solid line
        color: '#006',                      // Solid line color
        weight: 2                           // Solid line weight
    },
    startCircle: {                          // Style settings for circle marker indicating the starting point of the polyline
        color: '#000',                      // Color of the border of the circle
        weight: 1,                          // Weight of the circle
        fillColor: '#0f0',                  // Fill color of the circle
        fillOpacity: 1,                     // Fill opacity of the circle
        radius: 3                           // Radius of the circle
    },
    intermedCircle: {                       // Style settings for all circle markers between startCircle and endCircle
        color: '#000',                      // Color of the border of the circle
        weight: 1,                          // Weight of the circle
        fillColor: '#ff0',                  // Fill color of the circle
        fillOpacity: 1,                     // Fill opacity of the circle
        radius: 3                           // Radius of the circle
    },
    currentCircle: {                        // Style settings for circle marker indicating the latest point of the polyline during drawing a line
        color: '#000',                      // Color of the border of the circle
        weight: 1,                          // Weight of the circle
        fillColor: '#f0f',                  // Fill color of the circle
        fillOpacity: 1,                     // Fill opacity of the circle
        radius: 3                           // Radius of the circle
    },
    endCircle: {                            // Style settings for circle marker indicating the last point of the polyline
        color: '#000',                      // Color of the border of the circle
        weight: 1,                          // Weight of the circle
        fillColor: '#f00',                  // Fill color of the circle
        fillOpacity: 1,                     // Fill opacity of the circle
        radius: 3                           // Radius of the circle
    },
};