示例代码如下：
setClass("my.map", representation( id = "character", option = "character", content = "character" ))my.mapH = function(data) { if (.Platform$OS.type == "windows") { locate = Sys.getlocale("LC_CTYPE") Sys.setlocale("LC_CTYPE", "eng") } if (!is.data.frame(data)) { stop("Map data should be a data frame.") } if (ncol(data) < 3 | nrow(data) == 0) { stop("Data should have at least 3 columns and 1 row") } if (!is.numeric(data[1, 1]) | !is.numeric(data[1, 2]) | !is.numeric(data[1, 3])) { data[, 1] = as.numeric(data[, 1]) data[, 2] = as.numeric(data[, 2]) data[, 3] = as.numeric(data[, 3]) } heatdata = apply(data, 1, function(x) { out = sprintf('[%s,%s,%s]', x[1], x[2], x[3]) return(out) }) heatdata = paste(heatdata, collapse = ",\n") ### write remap object output = new("my.map") output@id = paste('ID', format(Sys.time(), "%Y%m%d%H%M%S"), round(proc.time()[3] * 100), sep = "_") output@option = html.data.H$option head = html.data.H$head foot = html.data.H$foot if (.Platform$OS.type == "windows") { Sys.setlocale("LC_CTYPE", "chs") } output@option = sub("forChange", "һ", output@option) output@option = sub("heatMapData", heatdata, output@option) ## optionNameData output@option = sub("optionNameData", paste0("option", output@id), output@option) outputFoot = sub("optionNameData", paste0("option", output@id), foot) output@option = strsplit(output@option, "kkkmmm")[[1]][2] output@content = paste(head, output@option, outputFoot, sep = "\n") if (.Platform$OS.type == "windows") { Sys.setlocale("LC_CTYPE", locate) } return(output)}html.data.H = list( head = "<html> <head> <meta charset=\"utf-8\"> <style type=\"text/css\"> body { margin: 0; } #main { height: 100%; } </style> </head> <body> <div id=\"main\"></div> <script src='/images/loading.gif' data-original=\"./js/echarts.js\"></script> <script src='/images/loading.gif' data-original=\"./js/bmap.js\"></script> <script src = \"http://api.map.baidu.com/api?v=2.0&ak=密钥\"></script> <script> var myChart = echarts.init(document.getElementById(\"main\")); ", option = "forChangekkkmmm var heatData = [heatMapData]; var optionNameData = { animation: false, bmap: { center: [103.855096, 36.056805], zoom: 5, min: 4, max:12, roam: true }, visualMap: { show: true, top: 'top', min: 1, max: 50, seriesIndex: 0, calculable: true, inRange: { color: ['blue', 'blue', 'green', 'yellow', 'red'] } }, series: [{ type: 'heatmap', coordinateSystem: 'bmap', data: heatData, pointSize: 6, blurSize: 8 }] }", foot = "; myChart.setOption(optionNameData); </script> </body> </html>" )
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原标题：R(七): R开发实例
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