Wrong width of bar in bar plots

[bklingen]

I would have expected a single bar with a width of 0.05 here:

library(plotly)

plot_ly(
  type = 'bar',
  x = 0.2,
  y = 10,
  width = 0.05
) %>% 
layout(
  xaxis=list(range=c(0,1))
)

Instead, I get a single bar with width 0.6 (and not 0.05).

Similarily, I would have expected two bars, each of width 0.05 here:

plot_ly(
  type = 'bar',
  x = c(0.2, 0.5),
  y = c(10, 8),
  width = 0.05
) %>% 
layout(
  xaxis=list(range=c(0,1))
)

Instead, it shows two bars, but not of width 0.05.

Only if I'm plotting 4 bars (or more) do I get the correct width (of 0.05) for each:

plot_ly(
  type = 'bar',
  x = c(0.2, 0.5, 0.6, 0.7),
  y = c(10, 8, 7, 3),
  width = 0.05
) %>% 
layout(
  xaxis=list(range=c(0,1))
)

Checking with a Javascript codepen, using

var trace0 = {
  type: 'bar',
  x: [0.2],
  y: [10],
  width: 0.05
}

var layout = {
  xaxis: {range: [0, 1]}
}

var data = [trace0]

Plotly.newPlot('myDiv', data, layout);

does give the expected result.

[cpsievert]

Huh, weird, that's definitely a bug, but here's a workaround in the meantime:

plot_ly(
  x = c(0.2, 0.5),
  y = c(10, 8)
) %>% 
    add_bars(width = 0.05) %>%
  layout(
    xaxis=list(range=c(0,1))
  ) 

[trekonom]

I had a look at this issue. The issue is simply that the optional width argument in plotly::plot_ly() is used to set the width of the svg container:

width: Width in pixels (optional, defaults to automatic sizing). (See ?plotly::plot_ly)