Re: [R] How do I find the index for a value in an array

Dear George, Try this: mat<-matrix(1:9,1,9) which(mat==5,arr.ind=TRUE) row col [1,] 1 5 HTH, Jorge On Sun, Jan 4, 2009 at 1:21 AM, George Chen wrote: > Hello, > Could anybody tell me how to find the index for a value which I define in > an array? > > ie. > > c<-matrix(1:9,1,9) #A

[R] How do I find the index for a value in an array

Hello, Could anybody tell me how to find the index for a value which I define in an array? ie. c<-matrix(1:9,1,9) #A 1x9 matrix filled with numbers 1 - 9 in order I want to know the index for the value 5. Thanks in advance, George Chen __ R-help@r