leaflet-shiny and image overlay

[Olivier Nuñez]

Dear all,

is there exist an easy way to add an image to a widget map created with leaflet() ?

That is, something equivalent to the imageOverlay layer from the Leaflet API documentation.

Thanks in advance. Olivier

[Peter Ellis]

Depending on what sort of image you mean, you could use the icon argument of addMarkers() in the way it is used to add an image of the R logo to a map in RStudio's intro to leaflet: http://rstudio.github.io/leaflet/#ui-layers

[Olivier Nuñez]

Thanks, but the size of a marker does not vary with the zoom.

I am rather interesting in a raster layer such like this: 

https://www.mapbox.com/mapbox.js/example/v1.0.0/imageoverlay-georeferenced/

[Olivier Nuñez]

Finally, I figured out the following solution using rCharts:

require(rCharts)

map = Leaflet$new()

map$setView(c(40.71,-74.20),zoom=12)

map$setTemplate(afterScript = sprintf("<script>

var imageUrl = 'http://www.lib.utexas.edu/maps/historical/newark_nj_1922.jpg',

imageBounds = [[40.712216, -74.22655], [40.773941, -74.12544]]

L.imageOverlay(imageUrl, imageBounds,{ opacity: .5}).addTo(map);

</script>"))

map