Hi,
when you do the trunc the mx is not a real integer 1 so you must round up
m<-matrix(data=NA, nrow=10,ncol=10)
i<-1001
mx<-round(trunc(i/1000))
my<-round((i/1000-mx)*1000)
m[mx,my]<-1
m
[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
[1,] 1 NA NA NA NA NA NA NA NA NA
[2,] NA NA NA NA NA NA NA NA NA NA
[3,] NA NA NA NA NA NA NA NA NA NA
[4,] NA NA NA NA NA NA NA NA NA NA
[5,] NA NA NA NA NA NA NA NA NA NA
[6,] NA NA NA NA NA NA NA NA NA NA
[7,] NA NA NA NA NA NA NA NA NA NA
[8,] NA NA NA NA NA NA NA NA NA NA
[9,] NA NA NA NA NA NA NA NA NA NA
[10,] NA NA NA NA NA NA NA NA NA NA
Chunhao Tu
Quoting Valentino Botta <[EMAIL PROTECTED]>:
the following code:
m<-matrix(nrow=10,ncol=10)
i<-1001
mx<-trunc(i/1000)
my<-(i/1000-mx)*1000
m[mx,my]<-1
does not assign the value at the matrix m[1,1]
Any hints?
Thanks
v
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