[R] Add png image outside plot borders

[Amelia McNamara]

If you run this, you'll see that I have some text at the bottom, but
the logo is within the plot borders.

plot(c(1.1, 2.3, 4.6), c(2.0, 1.6, 3.2), ylab="", xlab="")
mtext("X axis label", side=1, line=3)
mtext("Copyright statement", side=1, line=4, adj=0, cex=0.7)
library(png)
z <- readPNG("Cc.logo.circle.png")
rasterImage(z, 1, 1.6, 1.2, 1.7)

I've tried doing things like

rasterImage(z, 1, 0.5, 1.2, 1)

but nothing shows up. The documentation for rasterImage() says that
the corner values have to be within the plot region. As I said before,
I want the logo to be down on the level of my copyright text, outside
the plot region.

Thanks!


On Sun, Sep 18, 2011 at 1:26 PM, Joshua Wiley <jwiley.psych at gmail.com> wrote:
> Hi Amelia,
>
> Can you give an example (using text where you want the CC is fine)?
> Two angles I would try would be A) changing the regions or related but
> more flexible (and hence complex) B) use grid of course if you're
> making these with, say, ggplot2, you're already in grid (but then
> mtext probably would not work, though I have not tried it offhand).
> Anyway, an example (code please, not just the picture), will clear up
> all these questions and we can offer a solution tailored to what you
> are doing.
>
> Cheers,
>
> Josh
>
> On Sun, Sep 18, 2011 at 1:18 PM, Amelia McNamara
> <amelia.mcnamara at stat.ucla.edu> wrote:
>> I am trying to add a copyright disclaimer outside the plot borders of
>> some images I have created. I can use mtext() to add the written
>> portion, but I would like to have the Creative Commons license image
>> (http://en.wikipedia.org/wiki/File:Cc.logo.circle.svg) before the
>> text. I've found that I can plot a .png image inside the plot
>> boundaries using rasterImage() but I can't figure out how to do it
>> outside the boundaries.
>>
>> Any help would be great. If you know unicode or Adobe Symbol encoding
>> for the CC logo, that might work too.
>>
>> ~Amelia McNamara
>> Statistics PhD student, UCLA
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
>
>
> --
> Joshua Wiley
> Ph.D. Student, Health Psychology
> Programmer Analyst II, ATS Statistical Consulting Group
> University of California, Los Angeles
> https://joshuawiley.com/
>