[R] is there any option like cex.axis in ggplot2?

[ONKELINX, Thierry]

Dear Tom,

You can control the size of the axis title in ggplot2. It is described in the ggplot2 book. Have a look at Chapter 8: Polishing your plots for publication. You can find the book on the ggplot2 website.

I tend to create my own theme for some specific type of plots. Below you can find a theme for plots with rotated labels on the X-axis. Using such a theme is similar to adding an extra geom.

ggplot(dat, aes(x = factor(time), y = volume)) + geom_boxplot() + geom_jitter(aes(colour = id)) + labs(x = "time", y = volume) + BaseThemeX90()

BaseThemeX90 <- function(base_size = 10) {
	structure(list(
					axis.line =         theme_blank(),
					axis.text.x =       theme_text(size = base_size * 0.8 , lineheight = 0.9, colour = "grey50", hjust = 1, angle = 90),
					axis.text.y =       theme_text(size = base_size * 0.8, lineheight = 0.9, colour = "grey50", hjust = 1),
					axis.ticks =        theme_segment(colour = "grey50"),
					axis.title.x =      theme_text(size = base_size),
					axis.title.y =      theme_text(size = base_size, angle = 90),
					axis.ticks.length = unit(0.15, "cm"),
					axis.ticks.margin = unit(0.1, "cm"),
					
					legend.background = theme_rect(colour=NA), 
					legend.key =        theme_rect(fill = "grey95", colour = "white"),
					legend.key.size =   unit(1.2, "lines"),
					legend.text =       theme_text(size = base_size * 0.7),
					legend.title =      theme_text(size = base_size * 0.8, face = "bold", hjust = 0),
					legend.position =   "right",
					
					panel.background =  theme_rect(fill = "grey90", colour = NA), 
					panel.border =      theme_blank(), 
					panel.grid.major =  theme_line(colour = "white"),
					panel.grid.minor =  theme_line(colour = "grey95", size = 0.25),
					panel.margin =      unit(0.25, "lines"),
					
					strip.background =  theme_rect(fill = "grey80", colour = NA), 
					strip.label =       function(variable, value) value, 
					strip.text.x =      theme_text(size = base_size * 0.8),
					strip.text.y =      theme_text(size = base_size * 0.8, angle = -90),
					
					plot.background =   theme_rect(colour = NA),
					plot.title =        theme_text(size = base_size * 1.2),
					plot.margin =       unit(c(1, 1, 0.5, 0.5), "lines")
			), class = "options")
}


HTH,

Thierry


----------------------------------------------------------------------------
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics, methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium 
tel. + 32 54/436 185
Thierry.Onkelinx at inbo.be 
www.inbo.be 

To call in the statistician after the experiment is done may be no more than asking him to perform a post-mortem examination: he may be able to say what the experiment died of.
~ Sir Ronald Aylmer Fisher

The plural of anecdote is not data.
~ Roger Brinner

The combination of some data and an aching desire for an answer does not ensure that a reasonable answer can be extracted from a given body of data.
~ John Tukey

-----Oorspronkelijk bericht-----
Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] Namens Tom Cohen
Verzonden: donderdag 5 maart 2009 10:13
Aan: r-help at r-project.org
Onderwerp: [R] is there any option like cex.axis in ggplot2?

Dear list, 
 
I made boxplots using ggplot and want to control for x- and yaxis. Using "plot" I can do it by setting cex.axis equally to any size but can't figure out how to do it with ggplot.
 
 
ggplot(dat, aes(x = factor(time), y = volume)) + opts(axis.title.x=theme_text(size=8),axis.title.y=theme_text(size=8)) +
geom_boxplot() + geom_jitter(aes(colour = id))+labs(x = "time", y = volume)
 
Thanks for your help,
 
Tom
 
 


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