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https://github.com/juba/obsplot

Observable Plot bindings for R
https://github.com/juba/obsplot

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Observable Plot bindings for R

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# Obsplot

> **Warning**: this project is currently not actively maintained. In particular, the current managed Plot version is 0.3.2, which is very outdated.

`obsplot` is an experimental attempt at using [Observable Plot](https://observablehq.com/@observablehq/plot) as HTML widget in R.

Please note that **the package is in an early stage**. Its API is subject to breaking changes, there are bugs, and maybe bad design choices. But if you still want to try it, issues and feedback are very welcome !

## Examples

Here is a small example of a simple scatterplot from the `penguins` dataset of the `palmerpenguins` package :

```r
library(obsplot)
library(palmerpenguins)
data(penguins)

obsplot(penguins) |>
mark_dot(x = bill_length_mm, y = bill_depth_mm, stroke = sex) |>
opts(grid = TRUE)
```

![Simple scatterplot](man/figures/readme_scatter.png)

And here is a much more complex example taken from Observable Plot documentation :

```r
data(stateage)

xy <- transform_normalizeX(basis = "sum", z = "name", x = "population", y = "name")

obsplot(stateage, height = 660) |>
mark_ruleX(x = 0) |>
mark_ruleY(
transform_groupY(list(x1 = "min", x2 = "max"), xy)
) |>
mark_dot(xy, fill = age, title = age) |>
mark_text(
transform_selectMinX(xy), textAnchor = "end", dx = -6, text = name
) |>
scale_x(
axis = "top", label = "Percent (%) →",
transform = JS("d => d * 100")
) |>
scale_y(axis = NULL) |>
scale_color(scheme = "spectral", domain = unique(stateage$age)) |>
opts(grid = TRUE)
```

![stateage example](man/figures/readme_stateage.png)

You will find many more examples in the two gallery vignettes :

- [marks gallery](https://juba.github.io/obsplot/articles/gallery_marks.html)
- [facets and transforms gallery](https://juba.github.io/obsplot/articles/gallery_transforms.html)

## Usage

To get started, take a look at the [introduction vignette](https://juba.github.io/obsplot/articles/introduction.html).

## Installation

From Github :

```r
remotes::install_github("juba/obsplot")
```

From [R-universe](https://r-universe.dev/organizations/) :

```r
install.packages("obsplot", repos = "https://juba.r-universe.dev")
```

## Development notes

This package uses [packer](https://github.com/JohnCoene/packer) to manage JavaScript source code and dependencies. If you want to modify it, you'll need a working installation of [Node.js](https://nodejs.org/en/).

After cloning this repository, run the following in a terminal at the project root :

```sh
npm install
```

Then, if you modify the JavaScript code in `srcjs`, you'll have to run the following command to bundle and update the widget JavaScript code :

```r
packer::bundle_dev()
```

If you want to ship a minimized production version, use :

```r
packer::bundle_prod()
```

## Credits

- Obviously, the [Observable Plot](https://observablehq.com/@observablehq/plot) library developed by [Mike Bostock](https://observablehq.com/@mbostock) and [Philippe Rivière](https://observablehq.com/@fil/) at [Observable](https://observablehq.com/).
- The [htmlwidgets](https://www.htmlwidgets.org/) package, which does all the heavy work to bridge R and JavaScript.
- [John Coene](https://twitter.com/jdatap) for the [packer](https://github.com/JohnCoene/packer) package, the [JavaScript for R](https://book.javascript-for-r.com/) book and the [g2r](https://github.com/devOpifex/g2r/) package which is a great source of inspiration.