C++ ile Grafik Resmi Çevirme JavaScript ile
Contents
[
Hide
]
Grafikleri Oluşturma
Aspose.Cells API’leri, Excel grafiklerini ek araç veya uygulama gerektirmeden görüntü formatlarına dönüştürmeyi destekler. Render desteği sağlamak için, Chart sınıfı çeşitli aşırı yüklemelerde toImage(string) metodlarını kullanıma sunar.
Grafikleri Görüntüye Dönüştürme
Chart.toImage(string) metodunun, basit ve gelişmiş render işlemlerini destekleyen çeşitli aşırı yüklemeleri vardır. Varsayılan boyutlarda grafik render etmek istiyorsanız, aşağıdaki Chart.toImage(string) metodunu kullanmanızı öneririz.
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Aspose.Cells Chart to Image Example</h1>
<input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
<button id="runExample">Run Example</button>
<br/><br/>
<a id="downloadLinkEMF" style="display: none; margin-right: 10px;">Download EMF Image</a>
<a id="downloadLinkBMP" style="display: none;">Download BMP Image</a>
<div id="result"></div>
</body>
<script src="aspose.cells.js.min.js"></script>
<script type="text/javascript">
const { Workbook, SaveFormat, ChartType, ImageType } = 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 () => {
// This example does not require an input file; an empty workbook is created as in the original JavaScript example.
// Instantiating a Workbook object
const workbook = new Workbook();
// Adding a new worksheet to the Workbook
const sheetIndex = workbook.worksheets.add();
// Obtaining the reference of the newly added worksheet by passing its index to WorksheetCollection
const worksheet = workbook.worksheets.get(sheetIndex);
// Adding sample values to cells
worksheet.cells.get("A1").value = 50;
worksheet.cells.get("A2").value = 100;
worksheet.cells.get("A3").value = 150;
worksheet.cells.get("B1").value = 4;
worksheet.cells.get("B2").value = 20;
worksheet.cells.get("B3").value = 50;
// Adding a chart to the worksheet
const chartIndex = worksheet.charts.add(ChartType.Column, 5, 0, 15, 5);
// Accessing the instance of the newly added chart
const chart = worksheet.charts.get(chartIndex);
// Adding Series Collection (chart data source) to the chart ranging from "A1" cell to "B3"
chart.nSeries.add("A1:B3", true);
// Converting chart to image (EMF)
const emfData = chart.toImage(ImageType.Emf);
const emfBlob = new Blob([emfData], { type: "image/emf" });
const downloadLinkEMF = document.getElementById('downloadLinkEMF');
downloadLinkEMF.href = URL.createObjectURL(emfBlob);
downloadLinkEMF.download = 'chartEMF_out.emf';
downloadLinkEMF.style.display = 'inline-block';
downloadLinkEMF.textContent = 'Download EMF Image';
// Converting chart to Bitmap (BMP)
const bmpData = chart.toImage(ImageType.Bmp);
const bmpBlob = new Blob([bmpData], { type: "image/bmp" });
const downloadLinkBMP = document.getElementById('downloadLinkBMP');
downloadLinkBMP.href = URL.createObjectURL(bmpBlob);
downloadLinkBMP.download = 'chartBMP_out.bmp';
downloadLinkBMP.style.display = 'inline-block';
downloadLinkBMP.textContent = 'Download BMP Image';
document.getElementById('result').innerHTML = '<p style="color: green;">Chart images created. Click the download links to save them.</p>';
});
</script>
</html>
Gelişmiş ayarlarla grafiklerin görsellere dönüştürülmesi de mümkündür. Aspose.Cells API’leri, Chart.toImage(string) metodunun ImageOrPrintOptions nesnesini kabul eden aşırı yüklenmiş bir versiyonunu sağlar ve çözünürlük, yumuşatma modu, görüntü formatı gibi parametreleri belirlemenize olanak tanır.
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Create Chart and Export as PNG</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, ChartType, ImageOrPrintOptions, ImageFormat } = 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 () => {
// Creating a new Workbook object
const workbook = new Workbook();
// Adding a new worksheet to the Workbook
const sheetIndex = workbook.worksheets.add();
// Obtaining the reference of the newly added worksheet by passing its index to WorksheetCollection
const worksheet = workbook.worksheets.get(sheetIndex);
// Adding sample values to cells
worksheet.cells.get("A1").value = 50;
worksheet.cells.get("A2").value = 100;
worksheet.cells.get("A3").value = 150;
worksheet.cells.get("B1").value = 4;
worksheet.cells.get("B2").value = 20;
worksheet.cells.get("B3").value = 50;
// Adding a chart to the worksheet
const chartIndex = worksheet.charts.add(ChartType.Column, 5, 0, 15, 5);
// Accessing the instance of the newly added chart
const chart = worksheet.charts.get(chartIndex);
// Adding Series Collection (chart data source) to the chart ranging from "A1" cell to "B3"
chart.nSeries.add("A1:B3", true);
// Create an instance of ImageOrPrintOptions and set a few properties
const options = new ImageOrPrintOptions();
options.verticalResolution = 300;
options.horizontalResolution = 300;
options.imageFormat = ImageFormat.Png;
// Convert chart to image with additional settings
const imageData = chart.toImage(options);
const blob = new Blob([imageData], { type: 'image/png' });
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'chartPNG_out.png';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Chart PNG';
document.getElementById('result').innerHTML = '<p style="color: green;">Chart exported successfully! Click the download link to get the image.</p>';
});
</script>
</html>
Görüntüleme için Desteklenen Grafik Türleri
Şu anda görüntüleme için desteklenmeyen birkaç grafik türü vardır. Bu tür grafikler, aşağıdaki tablonun Desteklenen sütununda N içerir.
| Grafik türü | Grafik alt türü | Desteklenen |
|---|---|---|
| Column | Column | Y |
| ColumnStacked | Y | |
| Column100PercentStacked | Y | |
| Column3DClustered | Y | |
| Column3DStacked | Y | |
| Column3D100PercentStacked | Y | |
| Column3D | Y | |
| Bar | Bar | Y |
| BarStacked | Y | |
| Bar100PercentStacked | Y | |
| Bar3DClustered | Y | |
| Bar3DStacked | Y | |
| Bar3D100PercentStacked | Y | |
| Line | Line | Y |
| LineStacked | Y | |
| Line100PercentStacked | Y | |
| LineWithDataMarkers | Y | |
| LineStackedWithDataMarkers | Y | |
| Line100PercentStackedWithDataMarkers | Y | |
| Line3D | Y | |
| Pie | Pie | Y |
| Pie3D | Y | |
| PiePie | Y | |
| PieExploded | Y | |
| Pie3DExploded | Y | |
| PieBar | Y | |
| Scatter | Scatter | Y |
| ScatterConnectedByCurvesWithDataMarker | Y | |
| ScatterConnectedByCurvesWithoutDataMarker | Y | |
| ScatterConnectedByLinesWithDataMarker | Y | |
| ScatterConnectedByLinesWithoutDataMarker | Y | |
| Area | Area | Y |
| AreaStacked | Y | |
| Area100PercentStacked | Y | |
| Area3D | Y | |
| Area3DStacked | Y | |
| Area3D100PercentStacked | Y | |
| Doughnut | Doughnut | Y |
| DoughnutExploded | Y | |
| Radar | Radar | Y |
| RadarWithDataMarkers | Y | |
| RadarFilled | Y | |
| Surface | Surface3D | N |
| SurfaceWireframe3D | N | |
| SurfaceContour | N | |
| SurfaceContourWireframe | N | |
| Bubble | Bubble | Y |
| Bubble3D | N | |
| Stock | StockHighLowClose | Y |
| StockOpenHighLowClose | Y | |
| StockVolumeHighLowClose | Y | |
| StockVolumeOpenHighLowClose | Y | |
| Cylinder | Cylinder | Y |
| CylinderStacked | Y | |
| Cylinder100PercentStacked | Y | |
| CylindricalBar | Y | |
| CylindricalBarStacked | Y | |
| CylindricalBar100PercentStacked | Y | |
| CylindricalColumn3D | Y | |
| Cone | Cone | Y |
| ConeStacked | Y | |
| Cone100PercentStacked | Y | |
| ConicalBar | Y | |
| ConicalBarStacked | Y | |
| ConicalBar100PercentStacked | Y | |
| ConicalColumn3D | Y | |
| Pyramid | Pyramid | Y |
| PyramidStacked | Y | |
| Pyramid100PercentStacked | Y | |
| PyramidBar | Y | |
| PyramidBarStacked | Y | |
| PyramidBar100PercentStacked | Y | |
| PyramidColumn3D | Y | |
| BoxWhisker | BoxWhisker | Y |
| Funnel | Funnel | Y |
| ParetoLine | ParetoLine | Y |
| Sunburst | Sunburst | Y |
| Treemap | Treemap | Y |
| Waterfall | Waterfall | Y |
| Histogram | Histogram | Y |
| Map | Map | N |
Görüntüye veya PDF’ye dönüştürmeye çalıştığınızda, desteklenmeyen grafik türlerini 0 boyutlu görüntüler veya boş PDF’lerle sonuçlanabilirsiniz.