[R] Plot_ly bar plots - bars span sevral x values when there are missing values.

[nevil amos]

Hi Rasmus,

thanks for that suggestion. It does indeed fix the column widths in this
example.  the reason it does this is becuase it means that the additonal 0
values added result in values for two adjacent columns.

so if adjacent columns are present the "correct" column width is maintained

df[c(3,4),]%>%plot_ly(
  x =  ~ x,
  y =  ~ y,
  type = "bar")%>%
  layout(xaxis = list(range = c(0,20)),
         title = "adjcant x values get correct column width")
however if there are not tow adjacent columns  then the width increases

df[c(3,5),]%>%plot_ly(
  x =  ~ x,
  y =  ~ y,
  type = "bar")%>%
  layout(xaxis = list(range = c(0,20)),
         title = "gap between x values column width changes")

given this I'm still not sure why the single value example produces a
correct column width.

for now the generic work around is to pad with y=0 as you suggested.




On Wed, 10 Mar 2021 at 05:58, Rasmus Liland <jral using posteo.no> wrote:

> Dear Nevil,
>
> Although I am a bit unfamiliar with
> plotly, it seems it is possible to plot
> two bars side by side at least:
>
>         h <- df[3:4,]
>         p <- plotly::plot_ly(
>           data = h,
>           x =  ~ x,
>           y =  ~ y,
>           type = "bar")
>         p <- plotly::layout(p=p,
>           xaxis = list(range = c(0,20)),
>           title = "example 4 two bars side by side")
>         plotly::orca(p=p, file="amos4.png")
>
> Thus, if you want to only plot x=3 and
> x=11 you need to set y=0 when x=4:10:
>
>         h <- df[c(3, 11),]
>         h <- rbind(h, cbind(x=4:10, y=0))
>         p <- plotly::plot_ly(
>           data = h,
>           x =  ~ x,
>           y =  ~ y,
>           type = "bar")
>         p <- plotly::layout(p=p,
>           xaxis = list(range = c(0,20)),
>           title = "example 2 corrected")
>         plotly::orca(p=p, file="amos2.png")
>
> I think this has to do with the xaxis
> option in plotly::layout there, and not
> with the bar width.
>
> Best,
> Rasmus
>

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