通过 GC.Spread.Sheets.Charts.ChartType.pie 来指定图表类型为饼图。通过 GC.Spread.Sheets.Charts.ChartType.doughnut 来指定图表类型为圆环图。
下方代码展示了如何插入一个 Pie （饼图）类型的图表，你可以通过图表的api来更改图表的样式。
饼图只显示一个数据系列，通过 chart.series().get(index ?) 可以得到一个数据系列对应的系列实例，它的backColor属性是一个包含了这个系列上的所有颜色的字符串。饼图显示一个数据系列中各项的大小与各项总和的比例，它中的数据点显示为整个饼图的百分比。
下方代码展示了如何插入一个 Doughnut （圆环图）类型的图表，你可以通过图表的api来更改图表的样式。
圆环图以圆环的形式显示数据，圆环图可以包含多个数据系列，其中每个圆环分别代表一个数据系列。通过 chart.series().get(index ?) 可以得到一个数据系列对应的系列实例，它的backColor属性是一个包含了这个系列上的所有颜色的字符串。
window.onload = function () {
var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"), {sheetCount: 2});
initSpread(spread);
};
function initSpread(spread) {
spread.suspendPaint();
var sheets = spread.sheets;
initPieSheet(sheets[0]);
initPieChart(sheets[0]);
initDoughnutSheet(sheets[1]);
initDoughnutChart(sheets[1]);
spread.resumePaint();
}
function initPieSheet(sheet) {
sheet.name('Pie');
//prepare data for chart
var dataArray = [
["", 'Chrome', 'Firefox', 'IE', 'Safari', 'Edge', 'Opera', 'Other'],
["2017", 0.6360, 0.1304, 0.0834, 0.0589, 0.0443, 0.0223, 0.0246]
];
sheet.setArray(0, 0, dataArray);
}
function initPieChart(sheet) {
var chart = sheet.charts.add('PieChart1', GC.Spread.Sheets.Charts.ChartType.pie, 0, 50, 600, 400, "A1:H2");
showPieDataLabels(chart);
changePieStyle(chart);
changeChartTitle(chart);
}
function changeChartTitle(chart) {
var title = chart.title();
title.text = "Browser Market Share";
title.fontSize = 18;
chart.title(title);
}
// show dataLabels
function showPieDataLabels(chart) {
var dataLabels = chart.dataLabels();
dataLabels.showValue = true;
dataLabels.showSeriesName = false;
dataLabels.showCategoryName = true;
dataLabels.format = "0.00%";
var dataLabelPosition = GC.Spread.Sheets.Charts.DataLabelPosition;
dataLabels.position = dataLabelPosition.bestFit;
chart.dataLabels(dataLabels);
}
//change pie color
function changePieStyle(chart) {
chart.legend({position:GC.Spread.Sheets.Charts.LegendPosition.right});
var seriesItem = chart.series().get(0);
seriesItem.dataPoints = {
0: {
backColor: "rgb(91, 155, 213)"
},
1: {
backColor: "rgb(237, 125, 49)"
},
2: {
backColor: "rgb(165, 165, 165)"
},
3: {
backColor: "rgb(255, 192, 0)"
},
4: {
backColor: "rgb(68, 114, 196)"
},
5: {
backColor: "rgb(112, 173, 71)"
},
6: {
backColor: "rgb(255,20,128)"
}
}
seriesItem.border.width = 3;
chart.series().set(0, seriesItem);
}
function initDoughnutSheet(sheet) {
sheet.name('Doughnut');
sheet.suspendPaint();
//prepare data for chart
var dataArray = [
["", 'Chrome', 'Firefox', 'IE', 'Safari', 'Edge', 'Opera', 'Other'],
["2014", 0.4966, 0.1801, 0.2455, 0.0470, 0.0, 0.0150, 0.0158],
["2015", 0.5689, 0.1560, 0.1652, 0.0529, 0.0158, 0.0220, 0.0192],
["2016", 0.6230, 0.1531, 0.1073, 0.0464, 0.0311, 0.0166, 0.0225],
["2017", 0.6360, 0.1304, 0.0834, 0.0589, 0.0443, 0.0223, 0.0246]
];
sheet.setArray(0, 0, dataArray);
sheet.resumePaint();
}
function initDoughnutChart(sheet) {
var chart = sheet.charts.add('DoughnutChart1', GC.Spread.Sheets.Charts.ChartType.doughnut, 0, 100, 600, 320, "A1:H5");
changeDoughnutColor(chart);
changeDoughnutLegendPosition(chart);
changeDoughnutHoleSize(chart);
changeChartTitle(chart);
}
//change doughnut color
function changeDoughnutColor(chart) {
var series = chart.series().get();
for (var i = 0; i < series.length; i++) {
var seriesItem = series[i];
seriesItem.dataPoints = {
0: {
backColor: "rgb(91, 155, 213)"
},
1: {
backColor: "rgb(237, 125, 49)"
},
2: {
backColor: "rgb(165, 165, 165)"
},
3: {
backColor: "rgb(255, 192, 0)"
},
4: {
backColor: "rgb(68, 114, 196)"
},
5: {
backColor: "rgb(112, 173, 71)"
},
6: {
backColor: "rgb(255,20,128)"
}
}
chart.series().set(i, seriesItem);
}
}
function changeDoughnutHoleSize(chart) {
var seriesItem = chart.series().get(0);
seriesItem.doughnutHoleSize = 0.3;
chart.series().set(0, seriesItem);
}
function changeDoughnutLegendPosition(chart){
chart.legend({position:GC.Spread.Sheets.Charts.LegendPosition.right});
}
<!doctype html>
<html style="height:100%;font-size:14px;">
<head>
<meta name="spreadjs culture" content="zh-cn" />
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" type="text/css"
href="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets/styles/gc.spread.sheets.excel2013white.css">
<script src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets/dist/gc.spread.sheets.all.min.js"
type="text/javascript"></script>
<script
src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets-shapes/dist/gc.spread.sheets.shapes.min.js"
type="text/javascript"></script>
<script
src="$DEMOROOT$/zh/purejs/node_modules/@grapecity-software/spread-sheets-charts/dist/gc.spread.sheets.charts.min.js"
type="text/javascript"></script>
<script src="$DEMOROOT$/spread/source/js/license.js" type="text/javascript"></script>
<script src="app.js" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="styles.css">
</head>
<body>
<div class="sample-tutorial">
<div id="ss" class="sample-tutorial"></div>
</div>
</body>
</html>
.sample-tutorial {
position: relative;
height: 100%;
overflow: hidden;
}
body {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
}
