myIO

An R package for creating interactive d3.js visualizations using htmlwidgets. Supports 17 chart types including scatter plots, line charts, bar charts, treemaps, and more — all composable through a piped API.

Live Demo

Installation

# install.packages("devtools")
devtools::install_github("mortonanalytics/myIO")

Usage

Build plots by piping layers together with myIO() and addIoLayer():

library(myIO)

myIO() |>
  addIoLayer(
    type = "point",
    color = "#E69F00",
    label = "points",
    data = mtcars,
    mapping = list(x_var = "wt", y_var = "mpg")
  ) |>
  addIoLayer(
    type = "line",
    transform = "lm",
    color = "red",
    label = "trend",
    data = mtcars,
    mapping = list(x_var = "wt", y_var = "mpg")
  )

Supported Chart Types

addIoLayer()

Interactions

myIO charts are bidirectional — user actions flow back as structured data:

• setBrush() — Rectangle select returns selected rows as data
• setAnnotation() — Click to label data points; export annotations as CSV
• setLinked() — Crosstalk linked brushing across multiple charts
• setSlider() — Parameter sliders that trigger Shiny recomputation

Customization

Customize plots by chaining additional functions:

• setAxisFormat() — Set d3.js axis formats and labels
• setAxisLimits() — Set axis ranges
• defineCategoricalAxis() — Define a categorical axis
• setMargin() — Adjust chart margins
• setColorScheme() — Apply a custom color palette
• setTheme() — Set theme tokens (colors, font, background)
• setTransitionSpeed() — Control animation duration
• setToolTipOptions() — Configure tooltip behavior
• setToggle() — Enable layer toggle controls
• flipAxis() — Swap x and y axes
• suppressAxis() — Hide axes
• suppressLegend() — Hide the legend
• dragPoints() — Enable draggable points
• setReferenceLines() — Add reference lines

See the Getting Started, Chart Types, Shiny Integration, and Transforms & Theming vignettes for full examples.