Plotting in R

ggplot2

More tidyverse! Probably the favourite plotting system for R these days.

Kieran Healy advises the following set up for visualisation in the tidyverse style :

my_packages <- c("tidyverse", "broom", "coefplot", "cowplot",
    "gapminder", "GGally", "ggrepel", "ggridges",X "gridExtra",
    "interplot", "margins", "maps", "mapproj", "mapdata",
    "MASS", "quantreg", "scales", "survey", "srvyr",
    "viridis", "viridisLite", "devtools")

install.packages(my_packages,
    repos = "http://cran.rstudio.com")

• The ggplot2 reference is thorough but inscrutable without knowing the philosophy of the thing.
• Fancy features are best discovered via the extension gallery.
• The cheat sheet has graphical references, which is the appropriate way to consider this thing.
• Max Woolf’s simple ggplot tutorial
• The ggplot book is available free if you build it yourself
• The ggplot chapter of R for data science.
• Want arbitrary lines and stuff to appear in the legends? E.g. a mean line or multiple model fits.
• diagrammer emits your graphs as javascript widgets. V Web2.0 wow.
• ggvis is the latest iteration of the Hadley Wickham’s ggplot family, AFAICT, but currently on hiatus
• animating is sort of possible using ggplot2 but it is not fun.

plotly

browser-backed option Plotly has R support.

Other plotting systems

R Graphical Manual visualization of all CRAN R package example plots, and is searchable by topic.

Other image wrangling

meme produces image macros from inside R. hexSticker does hexStickers.

cairo errors

Do you get an error like this when plotting SVGs?

unable to load shared object '/usr/local/Cellar/r/3.5.0_1/lib/R/library/grDevices/libs//cairo.so':
dlopen(/usr/local/Cellar/r/3.5.0_1/lib/R/library/grDevices/libs//cairo.so, 6): image not found

Or this?

Error in dev.control(displaylist = if (record) "enable" else "inhibit") :
  dev.control() called without an open graphics device
Calls: local ... call_block -> block_exec -> chunk_device -> dev.control
In addition: Warning messages:
1: In (function (filename = if (onefile) "Rplots.svg" else "Rplot%03d.svg",  :
  unable to load shared object 'SOMETHING/r/3.6.2/lib/R/library/grDevices/libs//cairo.so':
  dlopen(SOMETHING/r/3.6.2/lib/R/library/grDevices/libs//cairo.so, 6): image not found

Cairo is finicky.

One problem can be that homebrew R doesn’t support the cairo library. Yihui recommends:

brew cask install r

or you can install svglite as an alternative.

install.packages("svglite")

and use the device option dev = "svglite". Mind you, svglite can have its own problems. I needed to do the following, on one Kubuntu workstation,

install.packages("devtools")
devtools::install_github('davidgohel/gdtools')
devtools::install_github("r-lib/svglite")

Or if you are using anaconda R:

this seems to help

conda update conda
conda update --all
conda install -c r r-essentials=1.7.0