selectedpoints for curvenumber > 0 invisible when using scattergl
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Description
I'm not sure if this is an issue with the R library (latest CRAN version 4.12.0) or plotly.js however, when setting selectedpoints on a scattergl trace for curvenumbers > 0, the points turn invisible - for curvenumber 0 it works as it should. If you look closely, you can see that the points were faded out before they are selected and when selected they disappear.
Using a scatter trace instead everything works as expected.
library(shiny)
library(plotly)
DF <- data.frame(
x = rep(1:10, 3),
y = c(
seq(1, 5, length.out = 10),
seq(1, 7, length.out = 10),
seq(1, 10, length.out = 10)
),
grp = rep(LETTERS[1:3], each = 10)
)
ui <- fluidPage(
plotlyOutput("my_plot"),
selectInput("plot_type", "Plot Type", choices = c("scatter", "scattergl"), selected = "scatter"),
numericInput(
inputId = "point_number",
label = "Point Number",
value = 0,
min = 0,
max = 9
),
numericInput(
inputId = "curve_number",
label = "Curve Number",
value = 0,
min = 0,
max = 2
)
)
server <- function(input, output, session) {
my_plot_proxy <- plotlyProxy(
outputId = "my_plot"
)
observe({
plotlyProxyInvoke(my_plot_proxy, "restyle", list(selectedpoints = -1)) # deselect all points for all traces
plotlyProxyInvoke(my_plot_proxy, "restyle", list(selectedpoints = list(I(input$point_number))), input$curve_number)
})
output$my_plot <- renderPlotly({
plot_ly(data = DF, type = input$plot_type, mode = "lines+markers", x = ~x, y = ~y, name = ~grp)
})
}
shinyApp(ui, server)
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Research direction
Start with the minimal Shiny reproduction in the issue and compare scatter with scattergl while varying curve_number and selectedpoints. Trace the plotlyProxyInvoke restyle path for nonzero traces; the issue is done when selected points remain visible for every curve, matching scatter behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript, r
- Domain
- data-visualization
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100