Support for plotting terra objects appears to be broken in the current leaflet release

[JosephStewart]

Support for plotting terra objects appears to be broken in the current leaflet release.

install.packages('leaflet')
library(terra); library(leaflet); library(raster)
r <- rast(xmin=-2.8, xmax=-2.79, ymin=54.04, ymax = 54.05, nrow=30, ncol=30, crs="epsg:4326", vals=1:900)
leaflet() |> addTiles() |> addRasterImage(r, colors = "Spectral", opacity = 0.8)
# Error in addRasterImage(addTiles(leaflet()), r, colors = "Spectral", opacity = 0.8) : 
# inherits(x, "RasterLayer") is not TRUE
leaflet() |> addTiles() |> addRasterImage(raster(r), colors = "Spectral", opacity = 0.8)
# works (but slow)

Robert Hijman's version of leaflet works for plotting terra objects. See #728.

remotes::install_github("https://github.com/rhijmans/leaflet")
library(terra); library(leaflet);
# SpatRaster
r <- rast(xmin=-2.8, xmax=-2.79, ymin=54.04, ymax = 54.05, nrow=30, ncol=30, crs="epsg:4326", vals=1:900)
leaflet() |> addTiles() |> addRasterImage(r, colors = "Spectral", opacity = 0.8)
# works!

[GuiAlDuS]

It seems the issue is with the Leaflet version on CRAN, the current Github version is able to load the SpatRaster layers well:
devtools::install_github('rstudio/leaflet')

[gadenbuie]

The latest version of leaflet is now on CRAN.