[R-SIG-Mac] sh: convert: command not found

[Duncan Murdoch]

On 24/10/2014, 1:37 AM, Simon Urbanek wrote:
> 
> On Oct 24, 2014, at 12:22 AM, Emma Sherratt <emma.sherratt at gmail.com> wrote:
> 
>> Dear Mac R community,
>>
>> I wonder if anyone else has come across this issue. After installing the
>> new Mac OS10.10 Yosemite, I am now having a strange problem.
>>
>> I'm trying to use movie3d and run similar functions based on this I have
>> written myself.
>>
>> Specifically, when I run
>>
>>> system("convert --version")
>> sh: convert: command not found
>>
>> yet, it is not a path issue.
>>> Sys.getenv("PATH")
>> [1]
>> "/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/X11/bin:/usr/local/git/bin:
>> */opt/ImageMagick/bin*:/usr/texbin"
>>
> 
> It is, because Yosemite ignores PATH for processes started from a GUI application. You will see if you run
> system("echo $PATH")
> 
> You have to use full paths in Yosemite for anything that is not on the "sanctioned" PATH -- or use R from the shell.

What is the best way to find the full path to a command there, since
Sys.which() sees the same PATH as system() does?

Alternatively, how do you modify the PATH that system() sees?

Duncan Murdoch