Re: [R] plot xlim/ylim range of axis
Hi Ivan, thanks for the hint. Now it works as expected. Sincerely, /steffen Am 10.11.2010 10:10, schrieb Ivan Calandra: Hi, The xlim and ylim arguments should be given the extremes of the range, not a range: plot(x=NULL, y=NULL, xlim=c(1, 10), ## with c() ylim=v(1e-9, 1e-3), ## with c() log=y) HTH, Ivan Le 11/10/2010 10:00, Steffen Uhlig a écrit : Dear mailing list readers! Using R and the plot function I stumbled over this little issue: plot(x=NULL, y=NULL, xlim=range(1:10), ylim=range(1e-9:1), log=y) produces an plot empty plot, where the y-axis is in the specified range. Changing ylim to ylim=range(1e-9:1e-3) creates an y-axis in the range of 1e-12 to 1e-6. This appearance of the y-axis is a bit unexpected for me. Could anyone point me to a FAQ entry why this happens? Thank you very much in advance! Sincerely, /steffen -- Steffen Uhlig, PhD Mechatronik und Sensortechnik HTW des Saarlandes Goebenstraße 40 66117 Saarbrücken Tel.: +49 (0) 681 58 67 274 __ 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.
[R] plot xlim/ylim range of axis
Dear mailing list readers! Using R and the plot function I stumbled over this little issue: plot(x=NULL, y=NULL, xlim=range(1:10), ylim=range(1e-9:1), log=y) produces an plot empty plot, where the y-axis is in the specified range. Changing ylim to ylim=range(1e-9:1e-3) creates an y-axis in the range of 1e-12 to 1e-6. This appearance of the y-axis is a bit unexpected for me. Could anyone point me to a FAQ entry why this happens? Thank you very much in advance! Sincerely, /steffen -- Steffen Uhlig, PhD Mechatronik und Sensortechnik HTW des Saarlandes Goebenstraße 40 66117 Saarbrücken Tel.: +49 (0) 681 58 67 274 __ 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.
[R] Plot of a subset of a data.frame()
Hello, my data.frame is sort of a collection of process values, i.e. huge run-chart. It consists of a time-stamp in the first column (date as string), factors in the following columns (used for subset-filtering), and some process-data columns. Hereafter, two examples are listed, showing the problems that occour during print: At first the example, that works fine: ~~ a = c(1:10) # create a vector of integers b = rep(c(a,b),5) # create a vector of chars, used # as factor-levels d = rnorm(10) # some random numbers e = data.frame(a,b,d) # connect to a data.frame e.1 = subset(e, b==a) # create two subsets e.2 = subset(e, b==b) plot(d~a, e.1, pch=3, col=2) # plot first data-subset points(d~a, e.2, pch=4, col=3) # plot the 2nd one ~~ all looks fine in theses plots. However, changing the content of vector a to a set of strings the following happens: ~~ a = c(a,b,c,d,e,f,g,h,i,j) e = data.frame(a,b,d) # re-build data.frame e.1 = subset(e, b==a) # create two subsets e.2 = subset(e, b==b) plot(d~a, e.1, pch=3, col=2) points(d~a, e.2, pch=4, col=3) ~~ The plot-command produces horizontal lines instead of dots. This seems to happen when the x-axis contains strings rather than numbers. is there a way out? Best regards, /Steffen -- Steffen Uhlig, PhD Mechatronik und Sensortechnik HTW des Saarlandes Goebenstraße 40 66117 Saarbrücken Tel.: +49 (0) 681 58 67 274 __ 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.
Re: [R] Plot of a subset of a data.frame()
Dear David, Petr, and Alain, thank you very much for your fast responses. It's a typical handbook-not-read-error at my side. I will dig deeper into the plot-functions and the assignment of data. I was not aware of that the vector a is handled as a vector of factors with 10 levels. Thanks for your suggestions and hints! Best regards, /steffen Am 26.07.2010 14:30, schrieb David Winsemius: On Jul 26, 2010, at 7:38 AM, Steffen Uhlig wrote: Hello, my data.frame is sort of a collection of process values, i.e. huge run-chart. It consists of a time-stamp in the first column (date as string), factors in the following columns (used for subset-filtering), and some process-data columns. Hereafter, two examples are listed, showing the problems that occour during print: At first the example, that works fine: ~~ a = c(1:10) # create a vector of integers b = rep(c(a,b),5) # create a vector of chars, used # as factor-levels d = rnorm(10) # some random numbers e = data.frame(a,b,d) # connect to a data.frame You've gotten several answers, but none have addressed an aspect of R behavior that took me longer to appreciate than it perhaps should have. The b column inside the e data.frame is now a factor column. I mention that because you later referred to it as a string which it is not. It is an integer with an associated indexed level character vector. Many of the functions that you might think would work on strings will give either errors or unexpected results when applied to factors. e.1 = subset(e, b==a) # create two subsets e.2 = subset(e, b==b) plot(d~a, e.1, pch=3, col=2) # plot first data-subset points(d~a, e.2, pch=4, col=3) # plot the 2nd one ~~ all looks fine in theses plots. However, changing the content of vector a to a set of strings the following happens: ~~ a = c(a,b,c,d,e,f,g,h,i,j) e = data.frame(a,b,d) # re-build data.frame e.1 = subset(e, b==a) # create two subsets e.2 = subset(e, b==b) plot(d~a, e.1, pch=3, col=2) points(d~a, e.2, pch=4, col=3) ~~ The plot-command produces horizontal lines instead of dots. This seems to happen when the x-axis contains strings rather than numbers. is there a way out? Best regards, /Steffen -- Steffen Uhlig, PhD Mechatronik und Sensortechnik HTW des Saarlandes Goebenstraße 40 66117 Saarbrücken Tel.: +49 (0) 681 58 67 274 __ 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.
[R] Handling of par() with variables
Hello! In order to plot multiple graphs with the same set-up I use the following code-structure: ### # storing old parameter set oldpar - par(no.readonly=T) #copying old parameter set newpar - par(no.readonly=T) #adjusting parameters newpar - par(mar=c(3.1,3.1,0.1,0.1), # margin for figure area oma=c(0,0,0,0), # margin for outer figure area cex.axis=0.9, # axeneinteilung mgp=c(2,0.6,0), # abstand der achsenbeschriftung tck=0.02# major ticks innen ) ... ... postscript(...) par(newpar) ... dev.off() ### Calling the variable newpar delivers the old paramter set only (from code-line newpar - par(no.readonly=T)). If the code-segment newpar - par(mar=... runs a second time, the correct paramter set is stored, however, just the 5 parameters adjusted and not the full list. My question is, why must the code segment newpar-par(mar...) run twice? Is there a better way to handle the graphics output? I would be grateful for a pointer on a FAQ-section or to an older discussion thread in this group! Thank you very much in advance! Regards, /steffen __ 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.
[R] Handling of par() with variables
Hello! In order to plot multiple graphs with the same setup I use the following code-structure: ### # storing old parameter set oldpar - par(no.readonly=T) #copying old parameter set newpar - par(no.readonly=T) #adjusting parameters newpar - par(mar=c(3.1,3.1,0.1,0.1), # margin for figure area oma=c(0,0,0,0), # margin for outer figure area cex.axis=0.9, # font size axis mgp=c(2,0.6,0), # distance of axis tck=0.02# major ticks inside ) ... ... postscript(...) par(newpar) ... dev.off() ### Calling the variable newpar delivers the old paramter set only (from code-line newpar - par(no.readonly=T)). If the code-segment newpar - par(mar=... runs a second time, the correct paramter set is stored, however, just the 5 parameters adjusted and not the full list. My question is, why must the code segment newpar-par(mar...) run twice? Is there a better way to handle the graphics output? I would be grateful for a pointer on a FAQ-section or to an older discussion thread in this group! Thank you very much in advance! Regards, /steffen -- Steffen Uhlig, PhD Mechatronik und Sensortechnik HTW des Saarlandes Goebenstraße 40 66117 Saarbrücken Tel.: +49 (0) 681 58 67 274 __ 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.
[R] ps-output and LaTeX/DVIPS/PS2PDF - Greek letters disappear
Hello! My graphs are produced using the postscript-option in R (R version 2.10.1 (2009-12-14)). When Greek letters are used on the axis, everything looks fine in the *.ps-file. If included in a LaTeX-file and (on Ubuntu 10.04, fresh install), the Greek letters appear in the DVI- and PS-output, however, if converted with ps2pdf they suddenly disappear. Could anyone suggest a solution? Best regards, /steffen -- Steffen Uhlig, PhD Mechatronik und Sensortechnik HTW des Saarlandes Goebenstraße 40 66117 Saarbrücken Tel.: +49 (0) 681 58 67 274 __ 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.
