小编ale*_*xo4的帖子

我碰到了一个奇怪的问题,我无法以任何方式解决这个问题,我希望有人能够更好地理解这些错误;

我无法使用RWebLogo包 - 甚至运行最简单的示例,因为同样缺少Ghostscript错误.

例如跑步:

library(RWebLogo)
aln <- c('CCAACCCAA', 'CCAACCCTA', 'AAAGCCTGA', 'TGAACCGGA')
weblogo(seqs=aln, file.out='mylogo.pdf')

抛出此错误:

Traceback (most recent call last):
  File "/Library/Frameworks/R.framework/Versions/3.1/Resources/library/RWebLogo/extdata/weblogo-3.3/weblogo", line 71, in <module>
    weblogolib._cli.main()
  File "/Library/Frameworks/R.framework/Versions/3.1/Resources/library/RWebLogo/extdata/weblogo-3.3/weblogolib/_cli.py", line 82, in main
    formatter(data, format, opts.fout)
  File "/Library/Frameworks/R.framework/Versions/3.1/Resources/library/RWebLogo/extdata/weblogo-3.3/weblogolib/__init__.py", line 757, in pdf_formatter
    gs = GhostscriptAPI()    
  File "/Library/Frameworks/R.framework/Versions/3.1/Resources/library/RWebLogo/extdata/weblogo-3.3/weblogolib/__init__.py", line 196, in __init__
    raise EnvironmentError("Could not find Ghostscript on path."
EnvironmentError: Could not find Ghostscript on path. There should be either a gs executable or a gswin32c.exe on your system's path

我在终端中安装了ghostscript …