1\name{which.lyr} 2 3\docType{methods} 4 5\alias{which.lyr} 6\alias{which.lyr,SpatRaster-method} 7 8\title{Which cells are TRUE?} 9 10\description{ 11This method returns a single layer SpatRaster with cell values that are the first layer in the input that has the value is not zero (FALSE), and, hence, is \code{TRUE}. 12} 13 14 15\usage{ 16\S4method{which.lyr}{SpatRaster}(x) 17} 18 19\arguments{ 20 \item{x}{SpatRaster} 21} 22 23 24\value{ 25SpatRaster 26} 27 28\seealso{\code{\link{isTRUE}}, \code{\link{which}}, See \code{\link{Summary-methods}} for \code{which.min} and \code{which.max}} 29 30 31\examples{ 32s <- rast(system.file("ex/logo.tif", package="terra")) 33x <- which.lyr(s > 100) 34} 35 36\keyword{spatial} 37