incorporating SVG directly into a Leaflet popup using R

There have been examples suggesting that integrating SVG graphics into Leaflet popups is achievable, such as this one: seeking examples of SVG graphics in Leaflet popups

Another illustration can be found here: Creating a graph within a leaflet popup using geoJson data

Despite these demonstrations, my recent endeavor to include SVG from the R wrapper for Leaflet was unsuccessful:

library(magrittr)
library(leaflet)

content <- paste(sep = '<body>'
                 ,'<svg height="100" width="100">'
                 ,'<circle cx="50" cy="50" r="40" stroke="black" stroke-width="3" fill="red" />'
                 ,'Sorry, your browser does not support inline SVG.'
                 ,'</svg>'
                 ,'</body>'
)


leaflet() %>% 
  addTiles() %>%
  addPopups(-122.327298
            ,47.597131
            ,content
            ,options = popupOptions(closeButton = FALSE)
  )

Inquiry: Can SVG indeed be integrated into Leaflet popups using R?

javascriptrsvgleaflet

Answer №1

It seems that there is an issue with your content because the use of sep = "<body>" has resulted in a <body> tag being inserted between each of the other tags in the paste() call. Try using \n as the separator instead to resolve this problem. Here is how you can modify your code to make the SVG in the popup work properly:

content <- paste('<body>'
                 ,'<svg height="100" width="100">'
                 ,'<circle cx="50" cy="50" r="40" stroke="black" stroke-width="3" fill="red" />'
                 ,'Sorry, your browser does not support inline SVG.'
                 ,'</svg>'
                 ,'</body>', sep = "\n"
)

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