add_zoom: Add zoom capacity
In dreamRs/r2d3maps: Create Maps with D3

Description Usage Arguments Note Examples

Add zoom capacity

1	add_zoom(map, enabled = TRUE, type = "click")

`map`	A `r2d3map` `htmlwidget` object.
`enabled`	Logical, enable zooming.
`type`	Type of zoom: `"click"` for zooming to clicked polygon, or `"wheel"` for zooming with mouse wheel. Both can be supplied.

Zoom with mousewheel doesn't work in RStudio viewer. Zooming can be slow for a map with lot of polygons.

library( r2d3maps )
library( rnaturalearth )


turkey <- ne_states(country = "turkey", returnclass = "sf")
d3_map(shape = turkey)

# zoom with click
d3_map(shape = turkey) %>% add_zoom()

# zoom with mousewheel (open in browser)
d3_map(shape = turkey) %>% add_zoom(type = "wheel")