Hi, Naresh,
I haven't really explored cairo myself, so I hope users with more
experience will chip in / correct me. I've tested that the below works,
but I can't really visually distinguish the results with cairo from the
ones without.
Naresh Gurbuxani <[email protected]> writes:
> For cairo, I used this header and same code as below.
>
> #+begin_src R :exports results :results output :type cairo
>
> Running code block gives this output.
> #+RESULTS:
> : null device
> : 1
>
> Now I can insert a link using [[file:figures/cairoplot.png]]
>
> Is it possible to input file name as header and have the code output
> graphics file link?
Just try it with `:results file graphics' plus `:file' and a file name,
and minus the explicit device commands.
Here's a version of your full example; attaching a PNG of the result:
#+begin_src R :exports results :results file graphics :file test-R-naresh.png
:type cairo
set.seed(123)
mydf <- data.frame(x1 = rnorm(5, mean = 0, sd = 1),
y1 = rnorm(5, mean = 0, sd = 1),
x2 = rnorm(5, mean = 4, sd = 2),
y2 = rnorm(5, mean = 4, sd = 2))
with(mydf,
plot(x1, y1, xlim = c(-2, 8), ylim = c(-2, 8), pch = 20,
cex = 2, col = rgb(0.9, 0, 0, alpha = 0.7), xlab = "", ylab = ""))
with(mydf,
points(x2, y2, pch = 20, cex = 2, col = rgb(0, 0.9, 0, alpha = 0.7)))
with(mydf,
arrows(x1, y1, x2, y2, length = 0.2, angle = 20, code = 2,
col = rgb(0.7, 0.7, 0.7)))
#+end_src
> Also, what are valid inputs for :antialias ?
Looking at ob-R.el, org-babel simply passes through to the graphics
device. So that's an R question.
R help for cairo refers to help for `X11', where the antialias options
are ‘c("default", "none", "gray", "subpixel")’.
In my test, `:antialias none' gives visibly different results (whether
or not using cairo).
Yours,
Christian
>
>> On Apr 16, 2025, at 8:45 AM, Christian Moe <[email protected]> wrote:
>>
>> Try this:
>>
>> :type cairo
>>
>> See: https://orgmode.org/worg/org-contrib/babel/languages/ob-doc-R.html
>>
>> Yours,
>> Christian
>>
>> Naresh Gurbuxani <[email protected]> writes:
>>
>>> How can I set up a code block which uses R code to output a cairo
>>> graphics file? In below example, code block for simple R graph uses
>>> header argument to input filename. Is it possible to create a similar
>>> set up when cairo is used?
