Sample transect
Creates random transects from points and generates sample points along each transect
sampleTransect(x, min.length, max.length, id = NULL, ...)
x |
A sp point object |
min.length |
Minimum length of transect(s) |
max.length |
Maximum length of transect(s) |
id |
A unique identification column in x |
... |
Additional arguments passed to sample.line |
Function create random direction and length transects and then creates a point sample along each transect. The characteristic of the sample points are defined by arguments passed to the sample.line function
Jeffrey S. Evans <jeffrey_evans@tnc.org>
library(sp)
data(meuse)
coordinates(meuse) <- ~x+y
proj4string(meuse) <- CRS("+init=epsg:28992")
meuse <- meuse[sample(1:nrow(meuse),10),]
transects <- sampleTransect(meuse, min.length=200,
max.length=500, min.samp = 3)
plot(transects$transects)
plot(transects$samples, pch=20, add=TRUE)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.