mapview + mapview adds data from the second map to the first
mapview + data adds spatial data (raster*, sf*, sp*) to a mapview map
mapview + NULL returns the LHS map
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mapview | mapview provides a slider in the middle to compare two maps.
mapview | NULL returns the LHS map
NULL | mapview returns the RHS map
# S4 method for mapview,mapview +(e1, e2) # S4 method for mapview,ANY +(e1, e2) # S4 method for mapview,`NULL` +(e1, e2) # S4 method for mapview,character +(e1, e2) # S4 method for mapview,`NULL` |(e1, e2) # S4 method for `NULL`,mapview |(e1, e2)
e1 | a leaflet or mapview map, or NULL. |
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e2 | a leaflet or mapview map, or NULL. |
m1 <- mapView(franconia, col.regions = "red") m2 <- mapView(breweries) ### add two mapview objects m1 + m2 ### add layers to a mapview object if (interactive()) { library(plainview) m1 + breweries + plainview::poppendorf[[4]] } m1 <- mapView(franconia, col.regions = "red") m2 <- mapView(breweries) ### add two mapview objects m1 | m2#>