plotly / plotly/plotly.R

unneeded warning about colours

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R
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Description

Running the code below return the plot with a warning about the number of colours.
This is not needed as I provided the full colour palette.

library(plotly)
colours <- c(
  "#00007F", "blue", "#007FFF", "cyan", "#7FFF7F", "yellow", "#FF7F00", "red",
  "#7F0000"
)
x <- data.frame(
  id = factor(colours)
)
plot_ly(x) |>
  add_markers(x = ~id, y = ~id, color = ~id, marker = list(color = colours))
Warning messages:
1: In RColorBrewer::brewer.pal(N, "Set2") :
  n too large, allowed maximum for palette Set2 is 8
Returning the palette you asked for with that many colors

2: In RColorBrewer::brewer.pal(N, "Set2") :
  n too large, allowed maximum for palette Set2 is 8
Returning the palette you asked for with that many colors

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 by running the supplied R and plotly example to reproduce the two RColorBrewer::brewer.pal warnings. Trace where the Set2 palette is selected for the marker colors, then verify that the example uses the provided nine-color palette without warnings.

Written by the indexing model from the issue text.

Assessment

Tech stack
r
Domain
data-visualization
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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