leastcostpath (version 1.2.1)

validate_lcp: validate_lcp

Description

Calculates accuracy of Least Cost Path

Usage

validate_lcp(lcp, comparison, buffers = c(50, 100, 250, 500, 1000))

Arguments

lcp

Least Cost Path to assess the accuracy of. Expects object of class SpatialLines/SpatialLinesDataFrame

comparison

SpatialLines or SpatialLinesDataFrame to validate the Least Cost Path against.

buffers

numeric vector of buffer distances to assess. Default values are c(50, 100, 250, 500, 1000).

Value

data.frame object

data.frame (base package). The resultant object identifies the percentage of the lcp within x distance (as supplied in the buffers argument) from the provided comparison object.

Details

Calculates the accuracy of the Least Cost Path using the buffer method proposed by Goodchild and Hunter (1997).

Examples

# NOT RUN {
x1 <- c(1,5,4,8)
y1 <- c(1,3,4,7)
line1 <- sp::SpatialLines(list(sp::Lines(sp::Line(cbind(x1,y1)), ID='a')))
x2 <- c(1,5,5,8)
y2 <- c(1,4,6,7)
line2 <- sp::SpatialLines(list(sp::Lines(sp::Line(cbind(x2,y2)), ID='b')))

val_lcp <- validate_lcp(lcp = line1, comparison = line2, buffers = c(0.1, 0.2, 0.5, 1))
# }