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myIO

An R package for creating interactive d3.js visualizations using htmlwidgets. Supports 36 chart types including scatter plots, line charts, uncertainty views, statistical composites, 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

Type	`type` value
Scatter plot	`"point"`
Line chart	`"line"`
Bar chart	`"bar"`
Grouped bar chart	`"groupedBar"`
Area chart	`"area"`
Histogram	`"histogram"`
Heatmap	`"heatmap"`
Candlestick	`"candlestick"`
Waterfall	`"waterfall"`
Sankey	`"sankey"`
Boxplot	`"boxplot"`
Violin	`"violin"`
Ridgeline	`"ridgeline"`
Donut chart	`"donut"`
Gauge chart	`"gauge"`
Hexbin plot	`"hexbin"`
Treemap	`"treemap"`

`addIoLayer()`

Argument	Description
`type`	Chart type (see table above)
`color`	Any CSS color string
`label`	Unique identifier for the layer
`data`	A data frame
`mapping`	List mapping variables, e.g. `list(x_var = "wt", y_var = "mpg")`
`transform`	Optional derived-data transform, e.g. `"identity"` or `"lm"`

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
addKeyframe() — Register complete data snapshots for sequential storytelling
setKeyframe() / stepKeyframe() — Select or step keyframes through a Shiny proxy

Runtime Compatibility

Runtime	Supported path
RStudio, R Markdown, and Quarto	Standard `htmlwidgets` rendering
Shiny	Widget rendering, reactive inputs, proxy data updates, and keyframe control
WebR 0.6.0	Precompiled Wasm package, R payload creation, and production-bundle rendering in Chromium

The WebR claim is intentionally bounded to the pinned end-to-end CI path; it does not imply that DuckDB-WASM or every browser host has been validated.

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
setTransition() — Configure duration, easing, and stagger
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, Sequential Storytelling, Shiny Integration, and Transforms & Theming articles for full examples.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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