similar to: strange behaviour of CairoPNG

I have a question about antialiasing when R generates bitmaps. (This follows a thread on the ggplot2 mailing list.) I mostly use R on Linux, although I sometimes use it in Mac and Windows as well. On Linux, I've found that plotting shapes 15-18 via cairo results in bad-looking output. The points are not antialiased, and they are jagged and misshapen. Plots generated in Windows also aren't

Hi, It seems that anti-aliasing in png(type = 'cairo') is not well supported for the point symbols without boarders, e.g. pch = 16. The Cairo package works well, though. You can compare png() with CairoPNG(): png(): http://i.imgur.com/8niB3jX.png CairoPNG(): http://i.imgur.com/FZBJOxm.png f = function(dev, ..., main = '') { dev(...) plot(c(1, 2, 1, 2), c(1, 1, 2, 2),

Dear all, I am trying to use the Cairo package to avoid some X11 issues and it works very well. However, when I want to add a legend to my plots, I receive an error message from Cairo: > library(Cairo) > CairoPNG(file="test.png") > plot(1:100) > dev.off() null device 1 This works fine. But: > CairoPNG(file="test.png") > plot(1:100) >

Hi All, I have been experiencing a strange issue ever since I upgraded my R and the packages. I cannot plot anything to the CairoPNG device.For an example:> Cairo(600, 600, file="plot.png", type="png", bg="white")> plot(1:10)> dev.off()will create an empty plot.png file. I am running R 2.12.1 (32bit) on Windows 7 (64bit). ----------------------------->

Hello, I am generating .png images using the Cairo package in a for loop (looping on the number of zones, number of zones equals the number of plots to create based on different zone data). When I run the R script the .png files are created but they are all black? If I comment out the for loop and force my zones to equal one the png file is created correctly? Is there an issue with

Hello, I am creating plots of hourly precipitation and accumulated precipitation (on different axis, see attached image). I was wondering how can I have the plot frame (black border) start at zero, it looks like it is plotted less than zero? The code I use to create the png files is below: CairoPNG(PNG_file,width=1000, height=600, pointsize=14, bg="white") opar <-

Hi All, I just installed Cairo on R 2.5.1 on windows XP. My hope was to get to see the transparency output e.g. http://had.co.nz/ggplot2/stat_smooth.html ggplot2 - stat_smooth , which I finally managed to do. However, I find the Cairo device, which I access either through CairoWin() or Cairo(type="win"), is pretty shaky in a number of respects : - whatever portion of the Cairo

I have been plotting the same charts using png on a Windows machine and on a Mac OSX and the quality of the resulting images, particularly in relation to the fonts, look far superior in the plots produced on the Mac. Is there any way I can enhance the quality of the plots produced on the Windows machine? I have also tried using win.metafile on the Windows machine and the quality looks the same as

I've got R running on a gentoo server that doesn't have X11 installed. Its a custom build to keep those dependencies at bay! However, some of my scripts use the base png() function and ggplot2. But, png uses X11. A google search suggests using the Cairo package, which works... but changes the fonts (specifically the size of the font). Adjusting the pointsize doesn't seem to have

Hi all, I believe I've run into this before, but I seem to have totally forgotten. No headway in the last couple of hours either. How do I make sure that points and margins remain the same absolute size as I change the resolution of a device? (I'm running 2.9.1 patched, on a Win XP-machine) Many thanks in advance, Gustaf Ps: As an afterthought, might it be that this behaviour is

I'd like to paste a zodiac sign on a graph, but it only prints it when I add another unicode ( \u3030) to the desired \u2648 - why? See the examplecode (compare the orange with the skyblue): plot(c(-1,1),c(-4,-2),type="n") text(x=0,y=-3.0,labels="\u2648 \u3030",cex=2.3,col="skyblue") text(x=0,y=-3.2,labels="\u2648",cex=2.3,col="orange")

I estimate some parameters and I want to print them (pretty) on my plot: # somehow estimated parameters z<-c(1.543523e+00, 1.23453e+00, 3.454000e+00) x<-seq(-1,1,length=100) plot(x,z[3]*x^2+z[2]*x+z[3],type="l", main="My nice plot of the estimated function") zs<-format(z,digits=4,scientific=FALSE,trim=TRUE) text(-0.9,7,expression(1.54*x^2)) # is

Hello guys, I'm new to knitr and to R in general. I'm using RStudio and knitr, both the latest version. I am trying to produce an html page with multiple graph, which has a url reference to each of them that bring us lower on the page. For those produce separately it is pretty easy, since I just include the html location like I did for graph 1. But in a loop, I am struggling to

Hi All, I found this issue when using asCairoDevice to transforming splom scatter plot to my RGtk2 GUI: If I put the code in R GUI or using CairoPNG or Cairo_pdf() to draw the scatter plot, I can get it correctly: The codes are: (you can copy and paste to your R GUI) super.sym <- trellis.par.get("superpose.symbol") plot.call<-splom(~iris[1:4], groups = Species, data = iris,

I have integers and I want R to give them back/output as Roman numerals: s=c(7,17) format(s,roman=T) is obviously wrong. Is there any other way/function to do this? Thanks, Thomas

I want to plot the results of today's elections in Austria in this typical 180?-piechart (and not 360?). Unfortunantely pie() has just an argument "init.angle" and no "end.angle". Perhaps you know a workaround. Thomas

Hi I want to draw sth in a pdf file with a predefined defined size. Say a 5cm x 3cm rectangle (a ruler): pdf("rect.pdf", paper="a4") plot(c(1,5,5,1,1),c(1,1,3,3,1),asp=1,axes="n") dev.off() but how do I fix that one unit is 1cm? Thanks thomas

Is there a R-package with a function that returns me the timezone, if I hand over longitude and latitude? I know online services like http://ws.geonames.org/timezone?lat=-38.01&lng=147 and http://www.earthtools.org/webservices.htm#timezone and wodner if this exists for R too. Thanks for helping, thomas

I want to plot something (eg a circle) with a fixed ratio of the x and y axis, or (even better) with a fixed size when I print it. Output should then be a circle (actually it'll be someting more complicated) with radius 5cm and not an ellipse. I'm _sure_ this is not new, but after looking 45min for a solution, I post here... Thanks for help Thomas

I cannot access internet through R. My IT-guys told me that I should set the proxy and the port and then everything will be fine. Where can I set them? I use R 2.6.2 under Windows 2000 and these settings are those of the Internet Explorer (no password). I read http://cran.at.r-project.org/bin/windows/base/rw-FAQ.html#The-Internet-download-functions-fail_002e but staring R by "C:\Program