[R] convert command not found in movie3d (rgl package) in Mac OS X

[Manabu Sakamoto]

Dear Duncan,

That solved it beautifully!

Manabu

On 23 January 2012 14:07, Duncan Murdoch <murdoch.duncan at gmail.com> wrote:
> On 12-01-23 8:50 AM, Manabu Sakamoto wrote:
>>
>> Dear list,
>>
>> I gave up trying to fix my movie3d (rgl library) issue in my PC
>> (completely black gif/png file) and went ahead and installed MacPorts
>> and ImageMagick onto my iMac (OSX ver 10.6.8). I think ImageMagick is
>> successfully installed in its default location (under /opt/local), and
>> I ran movie3d but I get the following error:
>>
>> Error in system("convert --version", intern = TRUE) :
>>   error in running command
>> sh: convert: command not found
>>
>> so I'm guessing R can't find the "convert" executable file, which is
>> in "/opt/local/bin", in its system search path, which I presume is
>> "/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin" that I got using
>> Sys.getenv("PATH").
>>
>> Does anyone know how I can resolve this? For instance, should I move
>> or copy the convert executable file to an appropriate directory (which
>> I don't really know where exactly, i.e. I can't find a folder "usr" in
>> the Macintosh HD), or can I add "/opt/local/bin" to the R's search
>> path?
>
>
> I think the latter is easiest.  Just use Sys.setenv to set it, e.g.
>
> Sys.setenv(PATH=paste("/opt/local/bin", Sys.getenv("PATH"), sep=":")
>
> The setting will only last for the duration of your R session.
>
> Duncan Murdoch



-- 
Manabu Sakamoto, PhD
School of Earth Sciences
University of Bristol
manabu.sakamoto at gmail.com