You might try using the Cairo package, which will allow you to bypass using the Windows graphics device and can give you anti-aliasing. As the manual says:
"It is ideal for use in server environments (file output) and as a replacement for other devices that don't have Cairo's capabilities such as alpha support or anti-aliasing." http://www.rforge.net/Cairo/ http://cran.r-project.org/src/contrib/Descriptions/Cairo.html - Mose On Nov 16, 2007 12:28 PM, Brian S Cade <[EMAIL PROTECTED]> wrote: > I have a recurring graphics issue that I've not been able to resolve with > R. If I make a series of regression estimates and then plot the estimated > function for the regression lines over a scatter plot of the data, e.g., > using a sequence of plot( ) and lines ( ) similar to those below > > > plot(dep12spp13ph1$DAYSWETm2,dep12spp13ph1$AFTERDECOMP,pch=dep12spp13ph1$spp,cex= > 0.75,ylab="Proportion > of biomass after leaching", xlab="Number of days in > wetland",xlim=c(0,250),ylim=c(0,1)) > xplot<- 0:243 > xplotbsk64deg1<-bs(xplot,knot=62,degree=1,Boundary.knots=c(0,243)) > lines(xplot,exp(xplotbsk64deg1 %*% > ph1.decomp.75.bs$coef[c(1,2)]),col="blue") > lines(xplot,exp(xplotbsk64deg1 %*% > ph1.decomp.75.bs$coef[c(3,4)]),col="red") > > and then attempt to copy the resulting graph from R graph window into a > Windows metafile to paste into another application like Power Point or > Word, the resulting regression lines have alot of jagged edges due to > resolution/pixelation issues. For a nonlinear function like the one > plotted above, changing the number of pairs of points evaluated with the > lines( ) function makes the plot look better or worse but never as good as > is possible if there was some sort of "smoothing" done on the plotted line > pixels. I do this type of graphing in SYSTAT all the time and it looks > great (but I would prefer not to have to jump back and forth between R and > SYSTAT ). If I save the graph (or print) from R into an encapsulated > Post-Script file, then the resulting regression line pixels are "smoothed" > > out and look nice, but then the symbols have been decomposed into their > constituent elements and are screwed up. I'm guessing somewhere in R's > graphing parameters/controls there might be a solution but I've yet to > find it. Any suggestions would be welcome. > > Brian > > Brian S. Cade > > U. S. Geological Survey > Fort Collins Science Center > 2150 Centre Ave., Bldg. C > Fort Collins, CO 80526-8818 > > email: [EMAIL PROTECTED] > tel: 970 226-9326 > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
