(This article was first published on

**mages' blog**, and kindly contributed to R-bloggers)I have to admit that I find the `plotmath`

expressions in R a little fiddly to annotate plots with mathematical notation.

Apparently I am not the only one, but Stefano Meschiari did actually something about it. A few days ago his package `latex2exp`

appeared on CRAN.

The package provides the wonderful function `latex2exp`

that translates LaTeX code into `plotmath`

expressions. Brillant! All I have to remember is to escape the `""`

character, that is write `"\"`

instead of `""`

.

Below is the first example from the `plotmath`

help file and again using `latex2exp`

. I think this is much easier to read and write.

You find more information about `latex2exp`

on Stefano’s web site and his GitHub repository.

### Session Info

`R version 3.2.1 (2015-06-18)`

Platform: x86_64-apple-darwin13.4.0 (64-bit)

Running under: OS X 10.10.4 (Yosemite)

locale:

[1] en_GB.UTF-8/en_GB.UTF-8/en_GB.UTF-8/C/en_GB.UTF-8/en_GB.UTF-8

attached base packages:

[1] stats graphics grDevices utils datasets methods base

other attached packages:

[1] latex2exp_0.3.1

loaded via a namespace (and not attached):

[1] magrittr_1.5 tools_3.2.1 Rcpp_0.11.6 stringi_0.5-5 stringr_1.0.0

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