crds: Get the coordinates of SpatVector geometries or SpatRaster...

In terra: Spatial Data Analysis

Get the coordinates of SpatVector geometries or SpatRaster cells

Description

Get the coordinates of a SpatVector or SpatRaster cells. A matrix or data.frame of the x (longitude) and y (latitude) coordinates is returned.

Usage

## S4 method for signature 'SpatVector'
crds(x, df=FALSE, list=FALSE)

## S4 method for signature 'SpatRaster'
crds(x, df=FALSE, na.rm=TRUE, na.all=FALSE)

Arguments

x	SpatRaster or SpatVector
df	logical. If TRUE a data.frame is returned instead of a matrix
list	logical. If TRUE a list is returned instead of a matrix
na.rm	logical. If TRUE cells that are NA are excluded. Ignored if the SpatRaster is a template with no associated cell values
na.all	logical. If TRUE cells are only ignored if na.rm=TRUE and their value is NA for all layers instead of for any layer

Value

matrix or data.frame

See Also

geom returns the complete structure of SpatVector geometries. For SpatRaster see xyFromCell

Examples

x1 <- rbind(c(-175,-20), c(-140,55), c(10, 0), c(-140,-60))
x2 <- rbind(c(-125,0), c(0,60), c(40,5), c(15,-45))
x3 <- rbind(c(-10,0), c(140,60), c(160,0), c(140,-55))
x4 <- rbind(c(80,0), c(105,13), c(120,2), c(105,-13))
z <- rbind(cbind(object=1, part=1, x1), cbind(object=2, part=1, x2), 
           cbind(object=3, part=1, x3), cbind(object=3, part=2, x4))
colnames(z)[3:4] <- c('x', 'y')
z <- cbind(z, hole=0)
z[(z[, "object"]==3 & z[,"part"]==2), "hole"] <- 1

p <- vect(z, "polygons")
crds(p)

f <- system.file("ex/lux.shp", package="terra")
v <- vect(f)
g <- crds(v)
head(g)

terra documentation built on Oct. 14, 2024, 5:07 p.m.