plotly / plotly/plotly.R

Add support for ggrepel::geom_text_repel labels

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R
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Description

I would like to produce a scatter plot in HTML format where labels are associated with each point.

This works well when I export the plot in PDF or PNG format:
example_repel_labels

But my HTML does not have the labels associated with each point. The warning message suggests that plotly does not support the label geometry from the ggrepel package:
example_repel_labels_html_screenshot

Would someone be so kind so add support for this function, please?

data(iris)

library(ggplot2)
library(htmlwidgets)
library(plotly)

p <- ggplot2::ggplot(iris, ggplot2::aes(x = Sepal.Length, y = Petal.Length)) +
  ggplot2::geom_point() +
  ggrepel::geom_text_repel(ggplot2::aes(label = Species)) +
  ggplot2::theme_classic()
ggplot2::ggsave('output/plot/point/example_repel_labels.pdf', p, height = 15, width = 15)
ggplot2::ggsave('output/plot/point/example_repel_labels.png', p, height = 15, width = 15)
pPlotly <- plotly::ggplotly(p)
htmlwidgets::saveWidget(pPlotly, 'output/plot/point/example_repel_labels.html')

Output:
Warning message: In geom2trace.default(dots[[1L]][[1L]], dots[[2L]][[1L]], dots[[3L]][[1L]]) : geom_GeomTextRepel() has yet to be implemented in plotly. If you'd like to see this geom implemented, Please open an issue with your example code at https://github.com/ropensci/plotly/issues

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start at the geom2trace.default entry point named in the warning and reproduce the supplied R example with geom_text_repel. Done means plotly::ggplotly renders the labels in the saved HTML without reporting that GeomTextRepel is unsupported.

Written by the indexing model from the issue text.

Assessment

Tech stack
r
Domain
data-visualization
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
38/100

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