geojsonio (version 0.8.0)

map_leaf: Make an interactive map locally

Description

Make an interactive map locally

Usage

map_leaf(input, lat = NULL, lon = NULL, basemap = "Stamen.Toner",
  ...)

Arguments

input

Input object

lat

Name of latitude variable

lon

Name of longitude variable

basemap

Basemap to use. See leaflet::addProviderTiles. Default: Stamen.Toner

...

Further arguments passed on to leaflet::addPolygons, leaflet::addMarkers, leaflet::addGeoJSON, or leaflet::addPolylines

Examples

# NOT RUN {
# We'll need leaflet below
library("leaflet")

# From file
file <- "myfile.geojson"
geojson_write(us_cities[1:20, ], lat='lat', lon='long', file = file)
map_leaf(as.location(file))

# From SpatialPoints class
library("sp")
x <- c(1,2,3,4,20)
y <- c(3,2,5,3,4)
s <- SpatialPoints(cbind(x,y))
map_leaf(s)

# from SpatialPointsDataFrame class
x <- c(1,2,3,4,5)
y <- c(3,2,5,1,4)
s <- SpatialPointsDataFrame(cbind(x,y), mtcars[1:5,])
map_leaf(s)

# from SpatialPolygons class
poly1 <- Polygons(list(Polygon(cbind(c(-100,-90,-85,-100),
   c(40,50,45,40)))), "1")
poly2 <- Polygons(list(Polygon(cbind(c(-90,-80,-75,-90),
   c(30,40,35,30)))), "2")
sp_poly <- SpatialPolygons(list(poly1, poly2), 1:2)
map_leaf(sp_poly)

# From SpatialPolygonsDataFrame class
sp_polydf <- as(sp_poly, "SpatialPolygonsDataFrame")
map_leaf(sp_poly)

# From SpatialLines class
c1 <- cbind(c(1,2,3), c(3,2,2))
c2 <- cbind(c1[,1]+.05,c1[,2]+.05)
c3 <- cbind(c(1,2,3),c(1,1.5,1))
L1 <- Line(c1)
L2 <- Line(c2)
L3 <- Line(c3)
Ls1 <- Lines(list(L1), ID = "a")
Ls2 <- Lines(list(L2, L3), ID = "b")
sl1 <- SpatialLines(list(Ls1))
sl12 <- SpatialLines(list(Ls1, Ls2))
map_leaf(sl1)
map_leaf(sl12)

# From SpatialLinesDataFrame class
dat <- data.frame(X = c("Blue", "Green"),
                 Y = c("Train", "Plane"),
                 Z = c("Road", "River"), row.names = c("a", "b"))
sldf <- SpatialLinesDataFrame(sl12, dat)
map_leaf(sldf)

# From SpatialGrid
x <- GridTopology(c(0,0), c(1,1), c(5,5))
y <- SpatialGrid(x)
map_leaf(y)

# From SpatialGridDataFrame
sgdim <- c(3,4)
sg <- SpatialGrid(GridTopology(rep(0,2), rep(10,2), sgdim))
sgdf <- SpatialGridDataFrame(sg, data.frame(val = 1:12))
map_leaf(sgdf)

# from data.frame
map_leaf(us_cities)

## another example
head(states)
map_leaf(states[1:351, ])

## From a named list
mylist <- list(list(lat=30, long=120, marker="red"),
               list(lat=30, long=130, marker="blue"))
map_leaf(mylist, lat="lat", lon="long")

## From an unnamed list
poly <- list(c(-114.345703125,39.436192999314095),
             c(-114.345703125,43.45291889355468),
             c(-106.61132812499999,43.45291889355468),
             c(-106.61132812499999,39.436192999314095),
             c(-114.345703125,39.436192999314095))
map_leaf(poly)
## NOTE: Polygons from lists aren't supported yet

# From a json object
map_leaf(geojson_json(c(-99.74, 32.45)))
map_leaf(geojson_json(c(-119, 45)))
map_leaf(geojson_json(c(-99.74, 32.45)))
## another example
map_leaf(geojson_json(us_cities[1:10,], lat='lat', lon='long'))

# From a geo_list object
(res <- geojson_list(us_cities[1:2,], lat='lat', lon='long'))
map_leaf(res)

# From SpatialPixels
pixels <- suppressWarnings(SpatialPixels(SpatialPoints(us_cities[c("long", "lat")])))
summary(pixels)
map_leaf(pixels)

# From SpatialPixelsDataFrame
pixelsdf <- suppressWarnings(
 SpatialPixelsDataFrame(points = canada_cities[c("long", "lat")], data = canada_cities)
)
map_leaf(pixelsdf)

# From SpatialRings
library("rgeos")
r1 <- Ring(cbind(x=c(1,1,2,2,1), y=c(1,2,2,1,1)), ID="1")
r2 <- Ring(cbind(x=c(1,1,2,2,1), y=c(1,2,2,1,1)), ID="2")
r1r2 <- SpatialRings(list(r1, r2))
map_leaf(r1r2)

# From SpatialRingsDataFrame
dat <- data.frame(id = c(1,2), value = 3:4)
r1r2df <- SpatialRingsDataFrame(r1r2, data = dat)
map_leaf(r1r2df)

# basemap toggling ------------------------
map_leaf(us_cities, basemap = "Acetate.terrain")
map_leaf(us_cities, basemap = "CartoDB.Positron")
map_leaf(us_cities, basemap = "OpenTopoMap")

# leaflet options ------------------------
map_leaf(us_cities) %>%
   addPopups(-122.327298, 47.597131, "foo bar", options = popupOptions(closeButton = FALSE))

####### not working yet
# From a numeric vector
## of length 2 to a point
## vec <- c(-99.74,32.45)
## map_leaf(vec)
# }