hovertemplate does not show value

[jchrom]

When using the %{text} placeholder, it sometimes gets displayed instead of the actual value of text. The following code produces a plot where, when I hover over the middle point, gives me this hover text:

Price: $6.84
X: 3
%{text}

Other points display correctly, eg.

Price: $2.03
X: 1
 Text A

The code I use is a slightly modified example:

tibble::tibble(
  x = c(1,2,3,4,5),
  y = c(2.02825,1.63728,6.83839,4.8485,4.73463),
  color = factor(c(1, 1, 2, 3, 3))) %>%
  plot_ly() %>% 
  add_trace(
    type = 'scatter', mode = 'lines+markers',
    x = ~x, y = ~y, color = ~color,
    text = c("Text A", "Text B", "Text C", "Text D", "Text E"),
    hovertemplate = paste('<i>Price</i>: $%{y:.2f}',
                          '<br><b>X</b>: %{x}<br>',
                          '<b>%{text}</b>'),
    showlegend = FALSE)

You can donwload the resulting html here (in case it renders differently for you for some reason). Note that when color is not used, this does not happen and all the points display correct hover text.

R version 3.6.3 (2020-02-29)
plotly 4.9.2.1

[Hoohm]

I'm having a similar issue on sankey plots.

I can use hovertemplate = "%{value}" to display node values, but then trying to use "%{customdata}" for example will not show the actual custom data but just show the string "%{customdata}". Same with text for example.

[parlerBinou]

I'm also having a similar issue.
In my use case, I find that the %{text} shows up as is when the underlying data.frame has only one row.

library(plotly)
library(tidyverse)

full <- data.frame(categories = letters[1:5], values = c(1:5))

# the hovertemplate works as intended when this contains more than one element
# for example; selection <- c("c", "d")
selection <- c("c") 
lab <- letters[10:10+length(selection)]
df <- full %>% filter(categories %in% selection)

fig <- plot_ly(data=df, x = ~values, y = ~categories,
               type = "bar", orientation = "h", name = "test",
               text = lab,
               hovertemplate = "%{y} (%{text}): %{x}"
)
fig

[chaoyangzhengnash]

Same issues as @parlerBinou happened to me.
When there is only one data point, the text for hovertemplate won't display real value.
The follwing is code for toy examples, run it and you will see the differences between fig1 and fig2

library(plotly)

fig1 <- plot_ly() 
fig1 <- fig %>%
  add_trace(
    type = 'scatter',
    mode = 'lines+markers',
    x = c(1),
    y = c(2.02825),
    text = paste("good"),
    hovertemplate = paste('<i>Price</i>: $%{y:.2f}',
                          '<br><b>X</b>: %{x}<br>',
                          '<b>%{text}</b>'),
    showlegend = FALSE
  ) 
fig1


fig2 <- plot_ly() 
fig2 <- fig %>%
  add_trace(
    type = 'scatter',
    mode = 'lines+markers',
    x = c(1,2),
    y = c(2.02825,3),
    text = paste("good"),
    hovertemplate = paste('<i>Price</i>: $%{y:.2f}',
                          '<br><b>X</b>: %{x}<br>',
                          '<b>%{text}</b>'),
    showlegend = FALSE
  ) 
fig2

[AndreasUntch]

As workaround you can give customdata the same value as text and then refer to customdata in your hovertemplate --> %{customdata}.

This should fix the problem, at least for me with stacked bars and only one value

[slb534]

I was having the same issue, same as @parlerBinou and @chaoyangzhengnash, when there's only one data point, the hovertemplate wouldn't show correctly.

The workaround suggested by @AndreasUntch worked for me, thank you. Here's what I did, in the plotly I changed "text = ~hovertext, hovertemplate = "%{text}" to "text = ~hovertext, hovertemplate = ~customdata", and up where I create my dataframe I just added "mydf$customdata <- mydf$hovertext" .