tmap (version 1.6-1)

tmap_mode: Set tmap mode to static plotting or interactive viewing

Description

Set tmap mode to static plotting or interactive viewing. The global option tmap.mode determines the whether thematic maps are plot in the graphics device, or shown as an interactive leaflet map. The function tmap_mode is a wrapper to set this global option. The convenient function ttm is a toggle switch between the two modes. Tip 1: use tmap_mode in scripts and ttm in the console. Tip 2: use ttm in combination with last_map to redraw the last map in the other mode.

Usage

tmap_mode(mode = c("plot", "view"))
ttm()

Arguments

mode

one of

Value

the mode before changing

See Also

vignette("tmap-modes"), last_map to show the last map, tm_view for viewing options, and tmap_leaflet for obtaining a leaflet widget

Examples

# world choropleth/bubble map of the world
data(World, metro)
metro$growth <- (metro$pop2020 - metro$pop2010) / (metro$pop2010 * 10) * 100

map1 <- tm_shape(World) +
	tm_polygons("income_grp", palette="-Blues", contrast=.7, id="name", title="Income group") +
	tm_shape(metro) +
	tm_bubbles("pop2010", col = "growth", 
		border.col = "black", border.alpha = .5, 
		style="fixed", breaks=c(-Inf, seq(0, 6, by=2), Inf),
		palette="-RdYlBu", contrast=1, 
		title.size="Metro population", 
		title.col="Growth rate (%)", id="name",
		popup.vars = c("pop2010", "pop2020", "growth")) + 
	tm_layout(legend.bg.color = "grey90", legend.bg.alpha=.5, legend.frame=TRUE)

# initial mode: "plot"
current.mode <- tmap_mode("plot")

# plot map
map1

# switch to other mode: "view"
ttm()

# view map
map1

# choropleth of the Dutch population in interactive mode:
require(tmaptools)
data(NLD_muni, NLD_prov)
NLD_muni$pop_dens <- calc_densities(NLD_muni, var = "population")

tm_shape(NLD_muni) +
	tm_fill(col="pop_dens", 
		style="kmeans", 
		title = "Population (per km^2)", id = "name") +
	tm_borders("grey25", alpha=.5) + 
	tm_shape(NLD_prov) +
	tm_borders("grey40", lwd=2)

# restore current mode
tmap_mode(current.mode)