mf_get_pencil function

Get a pencil layer from polygons

Create a pencil layer. This function transforms a POLYGON or MULTIPOLYGON sf object into a MULTILINESTRING one.

mf_get_pencil(x, size = 100, buffer = 0, lefthanded = TRUE, clip = FALSE)

Arguments

• x: an sf object, a simple feature collection (POLYGON or MULTIPOLYGON).
• size: density of the penciling. Median number of points used to build the MULTILINESTRING.
• buffer: buffer around each polygon. This buffer (in map units) is used to take sample points. A negative value adds a margin between the penciling and the original polygons borders
• lefthanded: if TRUE the penciling is done left-handed style.
• clip: if TRUE, the penciling is cut by the original polygon.

Returns

A MULTILINESTRING sf object is returned.

Examples

mtq <- mf_get_mtq()
mtq_pencil <- mf_get_pencil(x = mtq, clip = FALSE)
mf_map(mtq)
mf_map(mtq_pencil, add = TRUE)