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Showing content from https://github.com/SymbolixAU/mapdeck/issues/252 below:

Layers fail with no data · Issue #252 · SymbolixAU/mapdeck · GitHub

Describe the bug
An error occurs when adding a layer without data. Having no data to display can be common in interactive environments.

To Reproduce

library(sf)
#> Linking to GEOS 3.6.2, GDAL 2.2.3, PROJ 5.1.0
library(mapdeck)
sf <- sf::st_as_sf( capitals, coords = c("lon", "lat") )
mapdeck() %>% 
    add_scatterplot(
      data = head(sf,0)
      , radius = 1000000
      , fill_colour = "country"
      , layer_id = "scatter_layer"
      , tooltip = "capital"
    )
#> Error in rcpp_point_geojson(data, l, geometry_column, digits, "scatterplot"): 'getCharCE' must be called on a CHARSXP

^{Created on 2019-12-09 by the reprex package (v0.2.1)}

Expected behaviour
The layer to be added to the plot, without any data to display.

Versions
Current dev version

TODO

• arc
• column
• geojson
• greatcircle
• grid
• heatmap
• hexagon
• line
• mesh
• path
• pointcloud
• polygon
• scatterplot
• screengrid
• text
• trips

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