Hello,
I have a problem to flip a 200x200 matrix, which is imported by a .asc file.
I want to flip the matrix like in a created example below:
> b <- matrix(1:9,3,3,byrow=T)
> b
[,1] [,2] [,3]
[1,] 1 2 3
[2,] 4 5 6
[3,] 7 8 9
> b1 <- apply(t(b),1,rev)
> b1
[,1] [,2] [,3]
[1,] 7 8 9
[2,] 4 5 6
[3,] 1 2 3
but my R Script doesn't work so. I don't know where the problem is.
What's the different between a created matrix and a imported matrix?
Here is my r Script:
a <- read.table("c:/Test/Test.asc", header=FALSE, sep=" ")
dim(a)
b <- matrix(a, nrow=200, byrow=TRUE)
d <- apply(t(b),1,rev)
write.table(d, file = "c:/Test/output.asc", sep = " ", row.names = FALSE,
col.names = FALSE)
My output ist like this
input:
1 2 3
4 5 6
7 8 9
output:
3 2 1
6 5 4
9 8 7
but it should be like this, as in the example:
7 8 9
4 5 6
1 2 3
thanks.
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