tmap modes: plot and interactive view

The tmap package provides two drawing modes: "plot" for static plotting, and "view" for interactive viewing. The default and most extensive mode is "plot". See vignette("tmap-nutshell") for a getting started tutorial and pkg for an overview of functions. The "view" mode lacks some of the features offered by the "plot" mode, but is fully interactive.

First, let’s create a thematic world map.

data(World, metro)
metro$growth <- (metro$pop2020 - metro$pop2010) / (metro$pop2010 * 10) * 100

mapWorld <- 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") + 
    tm_style_gray() + tm_format_World()

To plot, just print the declared variable mapWorld:

mapWorld

The current mode can be obtained and set with the function tmap_mode:

# set mode to view:
tmap_mode("view")

Now the mode is set to view, we can interactively view it by printing it again:

mapWorld