[R] Add png image outside plot borders
Duncan Temple Lang
duncan at wald.ucdavis.edu
Sun Sep 18 23:48:38 CEST 2011
You can persuade rasterImage() (and other functions) to draw
outside of the data region using xpd = NA or xpd = TRUE.
See the help for the par function.
On 9/18/11 1:59 PM, Amelia McNamara wrote:
> 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)
> 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.
> 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.
>> 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
>>> 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
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
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