Dear list,
I'm using the brew package to generate a report containing various
plots. I wrote a function that creates a plot in png and pdf formats,
and outputs a suitable text string to insert the file in the final
document using the asciidoc syntax,
%
tmp - 1
makePlot = function(p,
Not sure what you want. Plot does that automatically. It seems to use
path.expand() to make the %03d expansion. Not that path.expand() is
documented to do this, but it seem to work.
Kees
On Sat, 21 Aug 2010 13:04:54 +0200, baptiste auguie
baptiste.aug...@googlemail.com wrote:
Dear
My function needs to do two things with the filename:
First, create the plot file. For this, Rplot%03d is OK because it is
correctly interpreted by the graphics device.
Second, generate a text string referring to this filename. This is
where I need to convert Rplot%03d to, say, Rplot001. I am
Now I understand. You need the name which png() does not return.
So I think you need to do (untested, I am struggling with the cat()):
makePlot = function(p, name=Rplot%03d, width=300)
{
real.name.png = path.expand(paste(name,'.png'sep='') # function needed here
real.name.pdf =
I dunno, it doesn't seem to do it for me,
name = Rplot%03d.png
real.name = path.expand(name)
real.name
#[1] Rplot%03d.png
list.files(patt=.png)
#[1] Rplot001.png
sessionInfo()
R version 2.11.1 (2010-05-31)
i386-apple-darwin9.8.0
locale:
[1] en_GB.UTF-8/en_GB.UTF-8/C/C/en_GB.UTF-8/en_GB.UTF-8
You are correct. (I really should start using these reading glasses).
My apologies
On Sat, 21 Aug 2010 14:20:17 +0200, baptiste auguie
baptiste.aug...@googlemail.com wrote:
I dunno, it doesn't seem to do it for me,
name = Rplot%03d.png
real.name = path.expand(name)
real.name
#[1]
Just so this thread is complete on the record:
Filenames such as Rplot%03d.png are used in C code as format strings
when opening a file. Nothing in R subsequently knows the file name --
the file is accessed through the FILE* pointer.
Despite what baptiste 'assumes', it is clearly documented
Dear Prof. Ripley,
Thank you for the authoritative information. I will implement my own
file numbering scheme, but I'm surprised it was never asked for in all
those years. It seems like a useful feature, to know what your output
filename will be.
Thanks again,
baptiste
On 21 August 2010 18:27,
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