Mu is rendered as just an "m" in pdf

[DuncanW]

Hi there,

I am wanting to use the greek letter mu in text and titles. Example:

"Particle Diameter [", mu, "m]"

But it keeps rendering as just "mm" when I print to pdf

[jrkrideau]

We need a reproducible example (reprex)

FAQ: What's a reproducible example (`reprex`) and how do I create one?

Why reprex? Getting unstuck is hard. Your first step here is usually to create a reprex, or reproducible example. The goal of a reprex is to package your code, and information about your problem so that others can run it and feel your pain. Then, hopefully, folks can more easily provide a solution. What's in a Reproducible Example? Parts of a reproducible example: background information - Describe what you are trying to do. What have you already done? complete set up - include any library() calls and data to reproduce your issue. data for a reprex: Here's a discussion on setting up data for a reprex make it run - include the minimal code required to reproduce your error on the data…

A handy way to supply sample data is to use the dput() function. See ?dput. If you have a very large data set then something like head(dput(myfile), 100) will likely supply enough data for us to work with.

[DuncanW]

Apologies,

library(extrafont)
font_install("fontcm")
loadfonts() 

pdf(file = "C:/Users/PSD1.pdf", family = "CM Roman", height = 5, width = 7)
par(family = "CM Roman")

plot(my_pow$PD_1, my_pow$Fre_1, xlab = expression(paste("Particle Diameter [", mu, "m]")), ylab = "Volume Frequency [%]", type = "l", col = "red", xaxp = c(0, 130, 13), yaxp = c(0, 6.5, 13), xlim=c(0, 130), ylim=c(0, 6.5))

dev.off()
embed_fonts(file = "C:/Users/PSD1.pdf")

The data in the my_pow file is irrelevant as I'm having problems just with the Mu greek letter in the title of plots.

Thanks

[startz]

R needs some persuading to show Greek letters. Try the latex2exp package and something like

library(latex2exp)
plot(x,y,xlab=TeX(paste("a","$\\mu$","b")))

[DuncanW]

Thanks for the help.

This suggestion works if I comment out the embed in pdf lines, but doesn't show up in the pdf if I run the code to print to pdf?

[DuncanW]

Any suggestions to get the greek letters printing correctly to pdf in CMU Serif font?