plotly / plotly/plotly.R

ggplotly: geom_path interpretation of size

Open
#340 1 comment 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

bug
Dominant language
R
Stars
2.7k
Forks
641
PR merge metrics
No merged PRs in 30d

Description

For a visualization I'm making thick curves as follows:

require(ggplot2)
require(plotly)
require(Hmisc)
len=100
edge=data.frame(bezier(x=c(0, 1, 2), y=c(0, 1, 0),evaluation = len))
edge$Sequence <- sin( seq(0,pi,length.out=len) ) 
gg = ggplot(edge,aes(x = x, y = y, size = Sequence)) +  geom_path() + scale_size( range = c(.3, 20), guide = F) + theme_bw(base_size = 16) + ylim(0,.6) + scale_alpha(guide=F)
pl <- ggplotly(gg)

which in ggplot2 gives:
image

but which with ggplotly

pl <- ggplotly(gg)

gives
image

I think the problem is that ggplotly is assuming every different "size" should be considered as a separate path, whereas ggplot2 is not.

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

Reproduce the supplied R example using ggplotly and compare its geom_path rendering with ggplot2. Trace how ggplotly interprets the varying size aesthetic for the path; done means the curve remains one continuous path and matches the ggplot2 result.

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

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.