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I would like to write the below title at an x-axis using the following code:
Title: Grain yield (ton. ha-1)
labs(x=expression(bold(paste("Grain yield"," ","(ton.", ha^-1,")", sep=""))))
-1 should be superscripted and the entire title should be in bold. I am getting everything right excepted that the superscripted part is not in bold.
I appreciate any help.
Thanks!
936
To add superscript as a title add bquote function with value inside ggtitle(). Parameter : like xlab and ylab functions, we can give the title for plot directly using this function. Here we will bquote() function for writing Superscript value ( Number VS Number2 ) as a title of plot.
To indicate a subscript, use the underscore _ character. To indicate a superscript, use a single caret character ^ . Note: this can be confusing, because the R Markdown language delimits superscripts with two carets.
To alter the labels on the axis, add the code +labs(y= "y axis name", x = "x axis name") to your line of basic ggplot code.
It's rather unusual to get incorrect advice from @BenBolker, but here is the solution to what he was offering as an example of a problem without solution:
barplot(height=c(1,1), ylab=expression(bold(paste("org.", cm^bold("-2")))))
The trick here is not to use numeric but rather text arguments. In your case you are under the common misconception that paste in plotmath has a 'sep' argument. It doesn't. (Furthermore it is generally not needed if you learn to use "~" and "*" properly.) This is a paste()-less solution:
plot(1,1, xlab=expression(bold(Grain~yield~~"(ton."*ha^"-1"*")")))
(I tested it with a base graphic because you didn't offer a complete example. There is no lab function in base R.)
179
@Dwin thanks for you answer I just needed to make a small modification on the code you showed:
xlab=expression(bold(Grain~yield~~"(ton."*ha^"-1"*")")))
this code did not work on my entire code background back I changed it to
xlab(expression(bold(Grain~yield~~"(ton."*ha^"-1"*")")))
changed the signal = for ( and it worked perfectly.
Thank you very much!!!
31
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