plotly / plotly/plotly.R

Counts need to be strings for histogram to work

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Description

A quirk I found today: count values need to be strings in order to be counted as numbers when inside a histogram.

fruits = c("Apples","Apples","Apples","Oranges", "Bananas")
counts = c(5,10,3,10,5)

Doesn't work:

plot_ly(y=counts, 
        x=fruits, 
        histfunc='sum', 
        type = "histogram") %>% 
  layout(yaxis=list(type='linear'))
Screen Shot 2020-07-01 at 3 30 23 pm

Does work:

plot_ly(y=as.character(counts), 
        x=fruits, 
        histfunc='sum', 
        type = "histogram") %>% 
  layout(yaxis=list(type='linear'))
Screen Shot 2020-07-01 at 3 30 47 pm

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 reproducing the two plot_ly histogram examples from the issue, comparing numeric counts with as.character(counts). Trace the histogram handling for histfunc='sum' and determine where numeric counts are treated differently. Done means numeric counts produce the same expected histogram without requiring conversion to character values.

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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