Shrink file size of pdf graphics
On 19/05/2011 11:14 AM, Layman123 wrote:
Hi everyone, My data consists of a system of nearly 75000 roads, available as a shapefile. When I plot the road system, by adding the individual roads with 'lines' and store it as a pdf-file with 'pdf' I get a file of size 13 MB. This is way too large to add it in my LaTeX-document, because there will be some more graphics of this type. Now I'm curious to learn wheter there is a possibility in R to shrink the file size of this graphic? I merely need it in a resolution so that it looks "smooth" when printed out. I don't know much about the storage of R graphics, but maybe there is a way to change the way the file is stored perhaps as a pixel image?
There are several possibilities. You can use a bitmapped device (e.g. png()) to save the image; pdflatex can include those. You can compress the .pdf file using an external tool like pdftk (or do it internally in R 2.14.x, coming soon). There are probably others... Duncan Murdoch