coords2Lines: Convert Points to SpatialLines*

In fdetsch/Orcs: Omnidirectional R Code Snippets

Convert Points to SpatialLines*

Description

Create a SpatialLines* object from a Line object or set of point coordinates in one go, i.e. without being required to run through the single steps outlined in sp::SpatialLines().

Usage

## S4 method for signature 'matrix'
coords2Lines(coords, ID, data, match.ID = TRUE, ...)

## S4 method for signature 'Line'
coords2Lines(coords, ID, data, match.ID = TRUE, ...)

Arguments

coords	Line object or 2-column numeric matrix with x and y coordinates.
ID	character, see sp::Lines().
data	data.frame with data to add to the output SpatialLines* object (optional).
match.ID	logical, see sp::SpatialLinesDataFrame().
...	Further arguments passed on to sp::SpatialLines(), i.e. proj4string.

Value

If 'data' is missing, a SpatialLines object; else a SpatialLinesDataFrame object.

Examples

library(sp)

coords1 <- cbind(c(2, 4, 4, 1, 2), c(2, 3, 5, 4, 2))
sln1 <- coords2Lines(coords1, ID = "A")

coords2 <- cbind(c(5, 4, 2, 5), c(2, 3, 2, 2))
sln2 <- coords2Lines(coords2, ID = "B")

plot(sln1, col = "grey75")
plot(sln2, col = "grey25", add = TRUE)

fdetsch/Orcs documentation built on Jan. 9, 2023, 6:14 a.m.