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Baidu map heat map PHP class library

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Baidu map heat map PHP class library

(function(w){
    // the heatmapFactory creates heatmap instances
    var heatmapFactory = (function(){
    // store object constructor
    // a heatmap contains a store
    // the store has to know about the heatmap in order to trigger heatmap updates when datapoints get added
    var store = function store(hmap){
        var _ = {
            // data is a two dimensional array
            // a datapoint gets saved as data[point-x-value][point-y-value]
            // the value at [point-x-value][point-y-value] is the occurrence of the datapoint
            data: [],
            // tight coupling of the heatmap object
            heatmap: hmap
        };
        // the max occurrence - the heatmaps radial gradient alpha transition is based on it
        this.max = 1;
        this.get = function(key){
            return _[key];
        };
        this.set = function(key, value){
            _[key] = value;
        };
    }

Set the detailed data displayed by the heat map. After implementation, it can be displayed immediately

@param {Json Object} data

{"max" : {Number} Maximum value of weight,

"data" : {Array} Coordinate detailed data, the format is as follows

{"lng":116.421969,"lat":39.913527,"count":3}, where

lng lat is the longitude and latitude respectively, count weight value

Add detailed coordinate points of the power map

@param {Number} lng longitude coordinate

@param {Number} lat longitude coordinate

@param {Number} count longitude coordinate

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PHP implements the method of calculating the distance between Baidu map coordinates, PHP coordinates_PHP tutorial

12 Jul 2016

PHP implements the method of calculating the distance between Baidu map coordinates, PHP coordinates. PHP implements the method of calculating the distance between Baidu map coordinates, PHP coordinates This article describes the PHP method of calculating the distance between Baidu map coordinates. Share it with everyone for your reference, specifically