On Fri, 4 Jul 2003, Yongchao Ge wrote: > Hi, > > I'm just wondering how I can do to make a huge postscript plot be > manageable. My question is that I have to draw around 60,000 points which > makes it painfully slow to print or view in gv or put it into latex > document, though it is very fast to produce the postscript file. > > A simple example is in the attachment. > > Well, I found that if I use png or jpeg. It is much faster to view > the figure. The only problem is that the x label, y label are using > bitmapped font so it doesn't look as beautiful as postscript. Sometimes it > is just hard to read the legend which consists of information how to > interpret the figure.
Only if scaling is involved: try setting the resolution so you view it at 1:1. > My question is that if there are some options or packages such that when > we are plotting many points or lines, the plot uses the bitmapped (raster) > format, but for the characters, like the x label, y label, and the title, > it uses the native font. > > pdf seems use the above approach and is very fast, but I have to use It doesn't use that approach: PDF is primarily a vector format, and that's what R's pdf() driver produces. > pdf2ps to convert the pdf file to ps file. It is still slow. If you know > other good converter of pdf file to ps file, i will also very appreciate > it. Which points up that the problem is in your .ps viewer, nowhere else. That's not surprising; postscript is a *print* description language and primarily intended for high-quality printing. For a long time postscript printers contained more powerful processors than workstations (let alone PCs). Your example is not `painfully slow' on my printer (nor to view with ghostscript, to give due credit to the engine behind gv), but it is also not an interesting plot, nor is it `huge'. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
