An R package for creating interactive web graphics via the open source
JavaScript graphing library
plotly.js.
Installation
Install from CRAN:
install.packages("plotly")
Or install the latest development version (on GitHub) via devtools:
devtools::install_github("ropensci/plotly")
Getting started
Web-based ggplot2 graphics
If you use ggplot2, ggplotly()
converts your static plots to an interactive web-based version!
library(plotly)
g <- ggplot(faithful, aes(x = eruptions, y = waiting)) +
stat_density_2d(aes(fill = ..level..), geom = "polygon") +
xlim(1, 6) + ylim(40, 100)
ggplotly(g)
By default, ggplotly() tries to replicate the static ggplot2 version
exactly (before any interaction occurs), but sometimes you need greater
control over the interactive behavior. The ggplotly() function itself
has some convenient “high-level” arguments, such as dynamicTicks,
which tells plotly.js to dynamically recompute axes, when appropriate.
The style() function also comes in handy for modifying the
underlying trace
attributes (e.g. hoveron) used to generate the plot:
gg <- ggplotly(g, dynamicTicks = "y")
style(gg, hoveron = "points", hoverinfo = "x+y+text", hoverlabel = list(bgcolor = "white"))
Moreover, since ggplotly() returns a plotly object, you can apply
essentially any function from the R package on that object. Some useful
ones include layout() (for customizing the
layout),
add_traces() (and its higher-level add_*() siblings, for example
add_polygons(), for adding new
traces/data),
subplot() (for combining multiple plotly
objects),
and plotly_json() (for inspecting the underlying JSON sent to
plotly.js).
The ggplotly() function will also respect some “unofficial”
ggplot2 aesthetics, namely text (for customizing the
tooltip),
frame (for creating
animations),
and ids (for ensuring sensible smooth transitions).
Using plotly without ggplot2
The plot_ly() function provides a more direct interface to plotly.js
so you can leverage more specialized chart types (e.g., parallel
coordinates or
maps) or even some visualization that the
ggplot2 API won’t ever support (e.g., surface,
mesh,
trisurf, etc).
plot_ly(z = ~volcano, type = "surface")
Learn more
To learn more about special features that the plotly R package provides (e.g., client-side linking, shiny integration, editing and generating static images, custom events in JavaScript, and more), see https://plotly-r.com. You may already be familiar with existing plotly documentation (e.g., https://plot.ly/r/), which is essentially a language-agnostic how-to guide for learning plotly.js, whereas https://plotly-r.com is meant to be more wholistic tutorial written by and for the R user. The package itself ships with a number of demos (list them by running demo(package = "plotly")) and shiny/rmarkdown examples (list them by running plotly_example("shiny") or plotly_example("rmd")). Carson also keeps numerous slide decks with useful examples and concepts.
Contributing
Please read through our contributing
guidelines.
Included are directions for opening issues, asking questions,
contributing changes to plotly, and our code of
conduct.
