Data Charts support treemap type. To use the Treemap Chart, you can set the data chart type to GC.Spread.Sheets.DataCharts.DataChartType.treemap.
For example, you can insert a treemap data chart and configure the data chart by method setChartConfig.
Notes: before using the data chart, tables in data manager should be initialized.
window.onload = async () => {
const { spread, designer } = createSpreadAndDesigner();
await initDataManager(spread);
const dataChart = spread.getActiveSheet().dataCharts.add('treemap', 30, 30, 550, 400, GC.Spread.Sheets.DataCharts.DataChartType.treemap);
dataChart.setChartConfig({
tableName: 'Sales',
plots: [{
type: GC.Spread.Sheets.DataCharts.DataChartType.treemap,
encodings: {
values: [{ field: 'Sales', aggregate: GC.Spread.Sheets.DataCharts.Aggregate.sum }],
details: [{ field: 'ProductType' }, { field: 'Product' }],
tooltip: [{ field: 'ProductType' }, { field: 'Product' }, { field: 'Sales' }],
},
config: {
tooltip: [{
style: {
fill: { type: 'CssColor', color: 'white' },
stroke: { type: 'CssColor', color: '#e0e0e0' },
strokeWidth: 1,
},
textStyle: {
color: '#555555',
fontFamily: 'Calibri',
fontSize: 12,
},
}],
},
}],
config: {
header: {
title: 'Treemap Chart',
padding: {
left: 16,
right: 16,
top: 5,
bottom: 0,
},
textStyle: {
fontSize: 19,
fontStyle: GC.Spread.Sheets.DataCharts.FontStyle.italic,
alignment: GC.Spread.Sheets.DataCharts.HAlign.left,
},
},
},
});
spread.getActiveSheet().dataCharts.all()[0].isSelected(true);
if (designer) {
designer.refresh();
}
}
function createSpreadAndDesigner() {
const demoHost = document.getElementById('demo-host');
if (window !== top) {
const spread = new GC.Spread.Sheets.Workbook('spread-host', { sheetCount: 1 });
new GC.Spread.Sheets.DataCharts.DataChartConfigPanel('panel-host', spread);
return {
spread
}
} else {
const designer = new GC.Spread.Sheets.Designer.Designer(demoHost, undefined, undefined, { sheetCount: 1 });
return {
designer,
spread: designer.getWorkbook(),
}
}
}
async function initDataManager(spread) {
const records = [
['Smartphones', 'iPhone 15', 4200],
['Smartphones', 'Galaxy', 3100],
['Smartphones', 'Pixel 8', 2400],
['Laptops', 'MacBook Pro 14', 5500],
['Laptops', 'XPS 13', 3300],
['Laptops', 'ThinkPad X1', 2800],
['Tablets', 'iPad Air', 2600],
['Tablets', 'Surface Go', 1900],
['Wearables', 'Apple Watch S9', 1800],
['Wearables', 'Galaxy Watch 6', 1200],
['Accessories', 'AirPods Pro', 2100],
];
const columns = ['ProductType', 'Product', 'Sales'];
await spread.dataManager().addTable('Sales', {
data: records.map(record => {
const item = {};
columns.forEach((column, index) => {
item[column] = record[index];
});
return item;
}),
}).fetch();
}
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<script src="$DEMOROOT$/spread/source/js/license.js" type="text/javascript"></script>
<script>
const designerDependencyScripts = [
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]
function appendScriptNode (src) {
const script = document.createElement('script');
script.src = src;
script.async = false;
script.type = 'text/javascript';
document.head.appendChild(script);
}
if (top === window) { // not in iframe
designerDependencyScripts.forEach(appendScriptNode);
}
</script>
<script src="app.js" type="text/javascript"></script>
</head>
<body>
<div class="sample-tutorial">
<div id="demo-host">
<div id="spread-host"></div>
<div id="panel-host"></div>
</div>
</div>
</body>
</html>
body {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
.sample-tutorial {
position: relative;
height: 100%;
overflow: hidden;
}
#demo-host {
width: 100%;
height: 100%;
overflow: hidden;
float: left;
}
#spread-host {
position: absolute;
top: 0;
left: 0;
width: calc(100% - 380px);
height: 100%;
}
#panel-host {
position: absolute;
top: 0;
right: 0;
width: 380px;
height: 100%;
}
