SymbolixAU / mapdeck

R interface to Deck.gl and Mapbox

Home Page:https://symbolixau.github.io/mapdeck/articles/mapdeck.html

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add_polygons not panning as intended witihin a shiny app

pdbentley opened this issue · comments

Describe the bug
When using mapdeck in a shinyapp, the ability to pan across the screen for add_polygon does not appear to work when the little hand is on a polygon (i.e. left click the mouse to drag the screen around). However, you can pan when the hand is on the background map. This behavious does not happen when using mapdeck on its own.

image

To Reproduce

library(mapdeck)
library(sf)
library(spData)

ui <- fluidPage(

    # Main panel for displaying outputs ----
    mainPanel(
      # Output: Histogram ----
      mapdeckOutput(outputId = "map", height = 900)
    )
  )

server <- function(input, output) {

  ## Currently supports sf objects projected into Web Mercartor
  sf <- sf::st_sf(nz)
  sf <- sf::st_transform(sf, "+init=epsg:4326")

  ## you need a MAPBOX access token
  # key <- read.dcf("~/Documents/.googleAPI", fields = "MAPBOX")
  observe({
    output$map <- renderMapdeck({

      mapdeck(min_zoom = 5,
        # token = key
        style = 'mapbox://styles/mapbox/dark-v9'
      ) %>%
        add_polygon(
          data = sf
          , layer_id = "polygon"
          , fill_colour = "Median_income"
        )
    })
  })

}

shinyApp(ui, server)

system details

R version 4.0.4 (2021-02-15)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 19044)

attached base packages:
[1] stats graphics grDevices utils datasets methods base

other attached packages:
[1] spData_0.3.10 shinydashboard_0.7.2 sf_1.0-7 dplyr_1.0.8
[5] RSQLite_2.2.7 magrittr_2.0.3 mapdeck_0.3.40003 shiny_1.7.1
[9] ee.shinyapp2022_0.0.0.9000

commented

I don't see the issue you're describing. Here's a screen recording of me dragging the polygons in a shiny

mapdeck_issue355.mov

I'm using the CRAN version - 0.3.4 - in this exmaple

Hey,

Did some testing and found that for the shiny package versoin 1.5.0 the app works as intended, however for shiny versions 1.6.0 and 1.7.0 the behaviour described above happens. Regards, P.

commented

Tested again on shiny 1.8.0 and I'm not seeing this error. Please reopen if it persists.