使用magick R导入PDF时出错 [英] Error using magick R to import PDF

问题描述

我有数百个要裁切的PDF.对于每个PDF，我都有一组独特的坐标来进行裁剪.我正在尝试使用R的magick软件包(ImageMagick 6.9.9.14版)，但是在导入PDF时收到错误消息.

I have hundreds of PDFs that I want to crop. For each PDF, I have a unique set of coordinates around which to crop. I am trying to use the R's magick package (version ImageMagick 6.9.9.14), but I receive an error when importing a PDF.

magick文档中的此示例引发错误:

This example from the magick documentation throws an error:

 library(magick)
 manual <- image_read('https://cran.r-project.org/web/packages/magick/magick.pdf', density = "72x72")

我收到的错误是"magick_image_readpath中的错误(路径，密度，深度，条带):Magick:PDFDelegateFailed`系统找不到指定的文件. '@ error/pdf.c/ReadPDFImage/809"

The error I receive is "Error in magick_image_readpath(path, density, depth, strip) : Magick: PDFDelegateFailed `The system cannot find the file specified. ' @ error/pdf.c/ReadPDFImage/809"

当我检查配置设置时:

magick_config

我发现ghostscript是真实的.我不确定要读取PDF是否需要其他设置.

I find that ghostscript is true. I am not sure if there are other settings required for reading in a PDF.

还有其他人遇到过与Magick类似的问题吗?我愿意接受能够裁剪PDF的替代软件包.

Has anyone else encountered a similar problem with magick? I am open to alternative packages with the ability to crop PDFs, if there are any.

推荐答案

我在Windows上遇到了同样的问题.这不是R问题.就我而言，我使用了64位的ImageMagick，但安装了32位的GhostScript.安装64位版本的GhostScript后，它可以正常工作.

I had the same problem on Windows. It was no R problem. In my case, I used ImageMagick 64-bit but had GhostScript 32-bit installed. After installing the 64-bit version of GhostScript it worked without any issues.

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