Read data from .csv file as a matrix and compare the different between two matrix
Hello, Em 05-09-2012 07:26, David Winsemius escreveu:
On Sep 4, 2012, at 4:39 PM, s.s.m. fauzi wrote:
Hi,
I have two table matrix, and I would like to compare the different between
two matrix.
For example:
Matrix 1:
A B C
A 0 1 0
B 0 0 1
C 0 0 0
Matrix 2:
A B C
A 0 1 0
B 0 0 0
C 0 0 0
Each column which have value 1, should also return value 1. As in this
case/example, the result should appear like this (as below). The result of
this differentiation should also be in matrix table and should be write in .
csv file.
Result of the differences:
Differences? What differences?
In fact, this doesn't seem to be a differences problem, but a logical one: - result is 1 iff both operands are 1. So the solution could be # multiply to return an integer, not T/F 1*(matrix1 & matrix2) Rui Barradas
If you examined the matrix returned by: matrix1 == matrix2 it would look exactly like your desired result:
A B C
A 0 1 0
B 0 0 0
C 0 0 0
At the mean time, I'm able to load the .csv file and convert it to matrix
matrix1 <-read.table("matrix1.csv", header=T, sep=",")
matrix1 <- as.matrix(matrix1)
matrix2 <- read.table("matrix2.csv", header=T, sep=",")
matrix2 <- as.matrix(matrix2)
But, I can't find a suitable script to compare the differences between the
matrix and write it to file.
Appreciate any help from the expert
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David Winsemius, MD Alameda, CA, USA
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.