Preview spatial data as 'leaflet' maps with minimal effort. smartmap is optimized for interactive use and distinguishes itself from similar packages because it does not need real spatial ('sp' or 'sf') objects an input; instead, it tries to automatically coerce everything that looks like spatial data to sf objects or leaflet maps. It - for example - supports direct mapping of: a vector containing a single coordinate pair, a two column matrix, a data.frame with longitude and latitude columns, or the path or URL to a (possibly compressed) 'shapefile'.
smartmap is an R package for previewing spatial data as
leaflet maps. It is designed for
interactive use and produces nice maps with minimal typing required. In
contrast to other similar packages, smartmap does not require an sf or
sp object as input, but just works with normal data.frames or
matrices that have longitude and latitude columns. See the package
homepage for more infos.
You can install smartmap from CRAN:
install.packages("smartmap")
or get the development version from GitHub with:
# install.packages("remotes")
remotes::install_github("s-fleck/smartmap")
smartmap is in maintenance mode since I don’t much work with spatial data anymore, so new features are unlikely to be added.
library(smartmap)
# coordinate pairs without names are interpreted as longitude/latitude
smap(c(16.422524, 48.185686))
# if you supply column names, smap uses those to identify the correct columns
smap(c(LAT = 48.185686, LoNgItuDE = 16.422524))
# when supplied with an url or file system path, smap tries its best to discover
# supported spatial datasets
# Note: the naturalearthdata url doesn't work anymore and i didn't find another good new example
# smap("https://www.naturalearthdata.com/http//www.naturalearthdata.com/download/50m/cultural/ne_50m_admin_0_countries.zip")
# You can call smap() on existing leaflet objects to add background tiles and
# a ruler for measuring distance
library(leaflet)
lf <- leaflet::leaflet() %>%
leaflet::addCircleMarkers(lng = 16.422524, lat = 48.185686)
lf
smap(lf)