用C++通过JavaScript创建开盘 最高 最低 收盘（OHLC）股票图表
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可能的使用场景
开-高-低-收（OHLC）图表使用五列数据，分别是类别、开盘、最高、最低和收盘。每个类别的价格范围再次通过垂直线表示，开盘价格和收盘价格之间的范围由一个更宽的浮动条表示；如果该类别的价格上升（收盘价高于开盘价），则该条将填充一种颜色，而如果价格下降，则用另一种颜色填充。这种图表通常被称为蜡烛图。
图表的可见性改进
我们通常用颜色而非黑白来表示价格的上涨与下降。在下面第一组蜡烛图中，红色表示上涨，绿色表示下降。
示例代码
以下示例代码加载了【示例Excel文件】(Open-High-Low-Close.xlsx)，并生成了【输出Excel文件】(out.xlsx)。
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Open-High-Low-Close Stock Chart Example</h1>
<input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
<button id="runExample">Run Example</button>
<a id="downloadLink" style="display: none;">Download Result</a>
<div id="result"></div>
</body>
<script src="aspose.cells.js.min.js"></script>
<script type="text/javascript">
const { Workbook, SaveFormat, Utils } = AsposeCells;
AsposeCells.onReady({
license: "/lic/aspose.cells.enc",
fontPath: "/fonts/",
fontList: [
"arial.ttf",
"NotoSansSC-Regular.ttf"
]
}).then(() => {
console.log("Aspose.Cells initialized");
});
document.getElementById('runExample').addEventListener('click', async () => {
const fileInput = document.getElementById('fileInput');
if (!fileInput.files.length) {
document.getElementById('result').innerHTML = '<p style="color: red;">Please select an Excel file.</p>';
return;
}
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
// Instantiating a Workbook object from uploaded file
const workbook = new Workbook(new Uint8Array(arrayBuffer));
// Accessing the first worksheet.
const worksheet = workbook.worksheets.get(0);
// Create High-Low-Close-Stock Chart
const pieIdx = worksheet.charts.add(AsposeCells.ChartType.StockOpenHighLowClose, 5, 6, 20, 12);
// Retrieve the Chart object
const chart = worksheet.charts.get(pieIdx);
// Set the legend can be showed
chart.showLegend = true;
// Set the chart title name
chart.title.text = "Open-High-Low-Close Stock";
// Set the Legend at the bottom of the chart area
chart.legend.position = AsposeCells.LegendPositionType.Bottom;
// Set data range
chart.chartDataRange = ["A1:E9", true];
// Set category data
chart.nSeries.categoryData = "A2:A9";
// Set the DownBars and UpBars with different color
chart.nSeries.get(0).downBars.area.foregroundColor = AsposeCells.Color.Green;
chart.nSeries.get(0).upBars.area.foregroundColor = AsposeCells.Color.Red;
// Fill the PlotArea area with nothing
chart.plotArea.area.fillFormat.fillType = AsposeCells.FillType.None;
// Saving the modified Excel file
const outputData = workbook.save(SaveFormat.Xlsx);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'out.xlsx';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Excel File';
document.getElementById('result').innerHTML = '<p style="color: green;">Chart created successfully! Click the download link to get the modified file.</p>';
});
</script>
</html>