Hi
Wolfgang Huber wrote:
Hi Paul
from a user perspective, this sounds reasonable.
Cool. That's now in r-devel.
Paul
Thank you very much,
Wolfgang
Il giorno Jan 28, 2010, alle ore 2:44 AM, Paul Murrell ha scritto:
Wolfgang Huber wrote:
Hi,
I am finding the recently added [1] functionality of embedding raster images
into plots on R devices very useful! Thanks to Paul Murrell and others for
providing that. I noted that in
https://svn.r-project.org/R/trunk/src/library/grDevices/src/devPS.c
a macro is defined: #define MAX_RASTERS 64, and consequently, I get
Error in grid.Call.graphics("L_raster", x$raster, x$x, x$y, x$width, x$height,
:
Too many raster images
even for relatively innocent graphics, such as extensions of [2] (which I made with
Bioconductor's "splots" package). Besides that, I imagine that raster images
could be useful as 'glyphs' in various types of plots.
Besides the not so helpful option of patching that macro in my private copy of
R, is there an intention to extend this functionality to accommodate for larger
plots more generally?
A simple solution (given the current implementation) would be to allow the user
to specify the max number of raster images when starting a PDF file, e.g., ...
pdf("plotwithlotsofimages.pdf", maxRaster=1024)
Would that suffice?
Paul
[1] http://developer.r-project.org/Raster/raster-RFC.html
[2] http://www.ebi.ac.uk/~huber/pub/Druggable_ratio_1_before.pdf
Thank you and best wishes,
Wolfgang
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Wolfgang Huber
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Dr Paul Murrell
Department of Statistics
The University of Auckland
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