From mboxrd@z Thu Jan  1 00:00:00 1970
From: Matthew Landis <landis@isciences.com>
Subject: Re: problems with R graphics
Date: Thu, 1 Mar 2012 02:47:09 +0000 (UTC)
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Matthew Landis <landis <at> isciences.com> writes:

> 
> Hello all,
...

> Unfortunately, I can't seem to get graphics 
> to insert themselves properly on export.  

....

> org example
> ----------------------------
...
> * A stand-alone code block
> 
> First, create some data, perform a regression, and plot it.  This
> works great.
> #+begin_src R :results graphics :file regress.png :exports both
> 
>   x <- runif(n = 100, min = 0, max = 20)
>   y <- 5*x^2 + 0.3*x + 3 + rnorm(100, sd = 200)
> 
>   f <- lm(y ~ x)
> 
>   plot(x, y, bty = 'n')
>   abline(f, lty = 'dashed')
> 
> #+end_src
> Success.
...

> #+begin_src R :session :results graphics :file regress_session.png :exports 
both
> 
>  plot(x, y, bty = 'n')
>  abline(f, lty = 'dashed')
> 
> #+end_src
> This code block doesn't work. No error, but no file is created.

...

I actually figured this one out just now.  If creating a file in a 'stand alone' 
code block, the default directory is the directory that the org file itself is 
in.  However, in a 'session' code block, the default directory is something else 
(R's default?).  If I specify the full path to the file in the 'session' code 
block, things work better.

Sorry for the noise!

M