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I have a plot which is generated thus:

ggplot(dt.2, aes(x=AgeGroup, y=Prevalence)) + 
    geom_errorbar(aes(ymin=lower, ymax=upper), colour="black", width=.2) +
    geom_point(size=2, colour="Red")

I control the x axis labels like this:

scale_x_discrete(labels=c("0-29","30-49","50-64","65-79",">80","All")) +

This works but I need to change the ">80" label to "≥80".

However "≥80" is displayed as "=80".

How can I display the greater than or equal sign ?

An alternative to using expressions is Unicode characters, in this case Unicode Character 'GREATER-THAN OR EQUAL TO' (U+2265). Copying @mnel's example

.d <- data.frame(a = letters[1:6], y = 1:6)

ggplot(.d, aes(x=a,y=y)) + geom_point() + 
    scale_x_discrete(labels = c(letters[1:5], "\u2265 80"))

Unicode is a good alternative if you have trouble remembering the complicated expression syntax or if you need linebreaks, which expressions don't allow. As a downside, whether specific Unicode characters work at all depends on your graphics device and font of choice.

2 Tricks for Remembering Greater Than and Less Than Signs, But these symbols are very useful, because they help us show the relationship between numbers or equations in a way that doesn't just say that  For example, 4 or 3 ≥ 1 shows us a greater sign over half an equal sign, meaning that 4 or 3 are greater than or equal to1. It works the other way, too. 1 ≤ 2 or 3 shows us a less than sign over half of an equal sign, so we know it means that 1 is less than or equal to2 or 3. The “does not equal” sign is even easier!

You can pass an expression (including phantom(...) to fake a leading >= within the label argument to scale_x_discrete(...)

for example

 .d <- data.frame(a = letters[1:6], y = 1:6)

 ggplot(.x, aes(x=a,y=y)) + geom_point() + 
    scale_x_discrete(labels = c(letters[1:5], expression(phantom(x) >=80))

See ?plotmath for more details on creating mathematical expressions and this related SO question and answer

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plot(5, ylab=expression("T ">="5"))

Greater than and less than symbols (video), As well as the familiar equals sign (=) it is also very useful to show if something is not equal to (≠) greater than (>) or less than (<). Table of Contents [hide]. The best-known symbols of inequality are “greater than” (>)and“less than” (<). With them, we can make comparisons. The “greater than” and “less than” signs resemble the letter “v” rotated. This trick can help you to know which way it should be rotated:

You can use

expression("">=80)

So your full axis label like would look like:

scale_x_discrete(labels=c("0-29","30-49","50-64","65-79",expression("">=80),"All")) +

I have had trouble exporting plots when using unicode, but the expression function is more consistent.

Remembering the Greater Than Sign & Less Than Sign, You can use $\ge$ or $\geq$ (to get ≥) or for a variant $\geqslant$ (to get ⩾). For less than or equal to replace the "g" by "l". For the strict versions, > and <, you  Greater Than or Equal To This page is about the meaning, origin and characteristic of the symbol, emblem, seal, sign, logo or flag: Greater Than or Equal To . Wayne Beech

√ Equal, Greater, or Less Than (Symbols & Examples), I'm trying to type the greater than or equal to symbol to write out an equation, and I cant figure out how to do that. Details. Sheets, Chrome OS,  Hello all, I have a report that requires me to display the symbol for "greater than or equal to" and "less that or equal to". I am attempting to use the function "HEXBYT" to convert the decimal representation to the sysbols, however when I use 8804 and 8805 , which is what the web says is the decimal representation for these fields, get different values.

How to type greater than or equal to symbols?, To get the < symbol (less than) you type the comma key while holding the shift key. To get the ≥ symbol (the greater than or equal to) use the opti Continue Reading Similarly, 2265 Alt-X displays ≥ (greater than or equal to). 141.9k views  Show activity on this post. An alternative to using expressions is Unicode characters, in this case Unicode Character 'GREATER-THAN OR EQUAL TO' (U+2265). Copying @mnel's example. .d <- data.frame(a = letters[1:6], y = 1:6) ggplot(.d, aes(x=a,y=y)) + geom_point() + scale_x_discrete(labels = c(letters[1:5], "\u2265 80"))

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Comments
  • @JanDvorak, unfortunately not. It's for publication, so it needs to look as good as possible. I wanted to go with >79 but the senior authors specifically wants ≥80
  • have you tried expression("">=80)? See ?plotmath.
  • @plannapus - that does the trick nicely ! Thank you - if you make an answer, I will upvote and accept...
  • It seems that @mnel was quicker than me :)
  • I posted before I saw your comment (if that makes it better?)
  • Problem: the pdf device does not support this character and prints ... instead. I'm not working in ggplot so maybe this isn't a concern in that package, but it's troublesome for saving from base R.
  • @MichaelChirico: Solution: unless you have compelling reason to use pdf, use cairo_pdf instead.
  • can you give an example of what such a compelling reason might be?
  • @otsaw I have the same problem with the postscript device for producing eps. Is there a cairo_postscript or similiar solution that you know of?
  • Works within a call to paste, so that's nice!