树状图

树状图将分层数据显示为一组嵌套矩形。有颜色的矩形(通常称为“分支”)表示包含其他矩形(“叶子”)的层次结构中的一个级别。每个矩形的内部空间按照测量的定量值进行分配,矩形按大小从左上角(最大值)到右下角(最小值)排列。

SpreadJS 支持树状图。通过 GC.Spread.Sheets.Charts.ChartType.treemap 类型等来获取图表类型。 你可以通过图表的API来添加一个树状图并定制其样式: Treemap: 图表直观的显示了包含不同数据量的数据。
window.onload = function () { var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), {sheetCount: 2}); initSpread(spread); }; function initSpread(spread) { var sheets = spread.sheets; spread.suspendPaint(); // custom sheet style _setSheet(sheets); _setData(sheets[0], 'treemapChart'); initTreemap(sheets[0], GC.Spread.Sheets.Charts.ChartType.treemap); _setData(sheets[1], 'customStyle'); var customTreemapChart = initTreemap(sheets[1], GC.Spread.Sheets.Charts.ChartType.treemap); _setDataLabels(customTreemapChart); _setDataPoints(customTreemapChart); spread.resumePaint(); } function _setSheet(sheets) { var columnWidths = [20, 70, 100, 80, 120]; for (var i = 0; i < sheets.length; i++) { sheets[i].options.gridline.showHorizontalGridline = false; sheets[i].options.gridline.showVerticalGridline = false; sheets[i].getRange(1, 1, 17, 4) .hAlign(GC.Spread.Sheets.HorizontalAlign.center) .setBorder(new GC.Spread.Sheets.LineBorder('black', GC.Spread.Sheets.LineStyle.thin), {all: true}); sheets[i].getRange(1, 1, 1, 4).font('bold normal 10pt Arial'); for (var j = 0; j < columnWidths.length; j++) { sheets[i].setColumnWidth(j, columnWidths[j]); } } } function initTreemap(sheet, chartType) { sheet.resumePaint(); return sheet.charts.add((sheet.name() + chartType), chartType, 400, 0, 650, 400, "B2:E18"); } function _setDataLabels(chart) { var dataLabels = chart.dataLabels(); dataLabels.color='white'; chart.dataLabels(dataLabels); } function _setDataPoints(chart) { var dataPoints = chart.series().dataPoints(); var fillColors = ['#4472c4', '#a5a5a5', '#ffc000', '#ed7d31']; for (var i = 0; i < fillColors.length; i++) { var dataPoint = dataPoints.get(i); dataPoint.fillColor = fillColors[i]; dataPoint.transparency = 0; // 0~1 dataPoints.set(i, dataPoint); } } function _setData(sheet, sheetName) { sheet.name(sheetName); sheet.suspendPaint(); var dataArray = [ ['Region', 'Subregion', 'country', 'Population'], ['Asia', 'Southern', 'India', 1354051854], [, , 'Pakistan', 200813818], [, , 'Bangladesh', 166368149], [, , 'Others', 170220300], [, 'Eastern', 'China', 1415045928], [, , 'Japan', 127185332], [, , 'Others', 111652273], [, 'South-Eastern', , 655636576], [, 'Western', , 272298399], [, 'Central', , 71860465], ['Africa', 'Eastern', , 433643132], [, 'Western', , 381980688], [, 'Northern', , 237784677], [, 'Others', , 234512021], ['Europe', , , 742648010], ['Others', , , 1057117703] ]; sheet.setArray(1, 1, dataArray); }
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