# Adding mathematical notations to R plots

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`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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