工作表转图像 为渲染的图像设置像素格式
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有时你在将工作表渲染为图像格式时希望指定像素格式。默认情况下，Aspose.Cells for Python via .NET使用每像素32位。您可以使用渲染图像的选项来自定义像素格式（位深度）。
请参阅下面的示例代码，演示了如何在渲染工作表的图像时设置所需的像素格式。
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| from aspose.cells import Workbook | |
| from aspose.cells.drawing import ImageType | |
| from aspose.cells.rendering import ImageOrPrintOptions, SheetRender | |
| from aspose.pydrawing.imaging import PixelFormat | |
| # For complete examples and data files, please go to https:# github.com/aspose-cells/Aspose.Cells-for-.NET | |
| # Source directory | |
| sourceDir = RunExamples.Get_SourceDirectory() | |
| # Output directory | |
| outputDir = RunExamples.Get_OutputDirectory() | |
| # Load an Excel file | |
| wb = Workbook(sourceDir + "sampleSetPixelFormatRenderedImage.xlsx") | |
| # Access first worksheet | |
| ws = wb.worksheets[0] | |
| # Set the ImageOrPrintOptions with desired pixel format (24 bits per pixel) and image format type | |
| opts = ImageOrPrintOptions() | |
| opts.pixel_format = PixelFormat.FORMAT_24BPP_RGB | |
| opts.image_type = ImageType.TIFF | |
| # Instantiate SheetRender object based on the first worksheet | |
| sr = SheetRender(ws, opts) | |
| # Save the image (first page of the sheet) with the specified options | |
| sr.to_image(0, outputDir + "outputSetPixelFormatRenderedImage.tiff") |