[R] ggplot2: less than equal sign
Hi I am trying to add a less than equal sign to a plot. I have previously done this using unicode but is not working in this instance. Any suggestions would be great thanks example code: library(ggplot2) df-data.frame(vis=c(0,0,1,1) , count=c(10,15,20,10) , grp=c(0,1,0,1)) df$grp -factor(df$grp ,levels=c(0,1) , labels =c(x \u2265 10 , x 10)) ggplot(df, aes(x = factor(vis), y=count , fill=grp)) + geom_bar(stat = identity) -- View this message in context: http://r.789695.n4.nabble.com/ggplot2-less-than-equal-sign-tp4662784.html Sent from the R help mailing list archive at Nabble.com. __ 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] ggplot2: less than equal sign
Hi, If you want to stick with the unicode way make sure to set your encoding system, e.g., on Mac Sys.setlocale(LC_ALL, en_US.UTF-8) This differs on Windows/Linux so see ?Sys.setlocale for examples on other platforms. Best, Ista On Thu, Mar 28, 2013 at 5:22 PM, soon yi soon...@ymail.com wrote: Hi I am trying to add a less than equal sign to a plot. I have previously done this using unicode but is not working in this instance. Any suggestions would be great thanks example code: library(ggplot2) df-data.frame(vis=c(0,0,1,1) , count=c(10,15,20,10) , grp=c(0,1,0,1)) df$grp -factor(df$grp ,levels=c(0,1) , labels =c(x \u2265 10 , x 10)) ggplot(df, aes(x = factor(vis), y=count , fill=grp)) + geom_bar(stat = identity) -- View this message in context: http://r.789695.n4.nabble.com/ggplot2-less-than-equal-sign-tp4662784.html Sent from the R help mailing list archive at Nabble.com. __ 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-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] ggplot2: less than equal sign
Hi: Here's a way you could do it entirely within ggplot2. The annotation functions have a parse = argument which allows you to pass character string representations of math expressions, but there is no such thing in the scale functions, so you need a different approach. library(ggplot2) df - data.frame(vis=c(0,0,1,1) , count=c(10,15,20,10) , grp=c(0,1,0,1)) # Generate a list of expressions that will become the legend labels lbs - list(expression(x = 10), expression(x 10)) ggplot(df, aes(x = factor(vis), y=count , fill=factor(grp))) + geom_bar(stat =identity) + scale_fill_manual(breaks = levels(factor(df$grp)), values = c(blue, orange), labels = lbs) The specifications in scale_fill_manual() are: - breaks: the values to go on the horizontal axis - values: the vector of fill colors for each level of grp - labels: the legend labels Notice that the labels = takes a list of expressions as its argument. This approach gives you more control over the legend and choice of fill colors at the expense of a couple of lines of code. To change the axis and legend titles, one can use the labs() function; e.g., last_plot() + labs(x = Visibility, y = Frequency, fill = Threshold) Dennis On Thu, Mar 28, 2013 at 2:22 PM, soon yi soon...@ymail.com wrote: Hi I am trying to add a less than equal sign to a plot. I have previously done this using unicode but is not working in this instance. Any suggestions would be great thanks example code: library(ggplot2) df-data.frame(vis=c(0,0,1,1) , count=c(10,15,20,10) , grp=c(0,1,0,1)) df$grp -factor(df$grp ,levels=c(0,1) , labels =c(x \u2265 10 , x 10)) ggplot(df, aes(x = factor(vis), y=count , fill=grp)) + geom_bar(stat = identity) -- View this message in context: http://r.789695.n4.nabble.com/ggplot2-less-than-equal-sign-tp4662784.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] ggplot2: less than equal sign
Thank you both for the suggestions. That worked great djmuse. djmuseR wrote Hi: Here's a way you could do it entirely within ggplot2. The annotation functions have a parse = argument which allows you to pass character string representations of math expressions, but there is no such thing in the scale functions, so you need a different approach. library(ggplot2) df - data.frame(vis=c(0,0,1,1) , count=c(10,15,20,10) , grp=c(0,1,0,1)) # Generate a list of expressions that will become the legend labels lbs - list(expression(x = 10), expression(x 10)) ggplot(df, aes(x = factor(vis), y=count , fill=factor(grp))) + geom_bar(stat =identity) + scale_fill_manual(breaks = levels(factor(df$grp)), values = c(blue, orange), labels = lbs) The specifications in scale_fill_manual() are: - breaks: the values to go on the horizontal axis - values: the vector of fill colors for each level of grp - labels: the legend labels Notice that the labels = takes a list of expressions as its argument. This approach gives you more control over the legend and choice of fill colors at the expense of a couple of lines of code. To change the axis and legend titles, one can use the labs() function; e.g., last_plot() + labs(x = Visibility, y = Frequency, fill = Threshold) Dennis On Thu, Mar 28, 2013 at 2:22 PM, soon yi lt; soon.yi@ gt; wrote: Hi I am trying to add a less than equal sign to a plot. I have previously done this using unicode but is not working in this instance. Any suggestions would be great thanks example code: library(ggplot2) df-data.frame(vis=c(0,0,1,1) , count=c(10,15,20,10) , grp=c(0,1,0,1)) df$grp -factor(df$grp ,levels=c(0,1) , labels =c(x \u2265 10 , x 10)) ggplot(df, aes(x = factor(vis), y=count , fill=grp)) + geom_bar(stat = identity) -- View this message in context: http://r.789695.n4.nabble.com/ggplot2-less-than-equal-sign-tp4662784.html Sent from the R help mailing list archive at Nabble.com. __ R-help@ 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-help@ 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. -- View this message in context: http://r.789695.n4.nabble.com/ggplot2-less-than-equal-sign-tp4662784p4662789.html Sent from the R help mailing list archive at Nabble.com. __ 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.
