Displaying 2 results from an estimated 2 matches for "initialmatrix".
2006 Jul 27
2
Vector extracted from a matrix. How can I specify dimensions in as.matrix?
...d
dim(simplevector) #3x1 matrix (vector)
dim(tsimplevector)#1x3
PROBLEM: However, when the vector is extracted from a matrix, its dimension
is NULL. In this case the transposed dimension is correct, but you'll see
the next example, that if a row was extracted, the dimension would be wrong:
initialmatrix <- matrix(1:9,3,3)
extractedvector <-initialmatrix[,1] # extract first columm as vector
textractedvector <-t(extractedvector)#transposed
dim(extractedvector) #NULL!!!! <- not working
dim(textractedvector)#1x3 as expected
I have tried to transform the extracted vector as.vector and as.m...
2010 Mar 26
5
smart way to turn a vector into a matrix
Hello guys, I am working on a matrix which looks like this one:
> initialMatrix <-
> rbind(cbind(rep("A",3),seq(1,3)),cbind(rep("B",4),seq(1,4)),cbind(rep("C",3),seq(1,3)))
> initialMatrix
[,1] [,2]
[1,] "A" "1"
[2,] "A" "2"
[3,] "A" "3"
[4,] "B" "...