[R] working with matrix
I am new in R and I want to solve this problem; I have a matrix X (with n-rows and p-colums) my problem is to obtain the products of the vectors of rows and print out only the maximum value and identify the row that gives the maximum value. Thanks Oyeyemi, G.M - Don't pick lemons. [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch 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.
Re: [R] working with matrix
which.max(apply(mat, 1, prod)) Gabor On Wed, Jul 04, 2007 at 09:18:41AM -0700, Yemi Oyeyemi wrote: I am new in R and I want to solve this problem; I have a matrix X (with n-rows and p-colums) my problem is to obtain the products of the vectors of rows and print out only the maximum value and identify the row that gives the maximum value. Thanks Oyeyemi, G.M - Don't pick lemons. [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch 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. -- Csardi Gabor [EMAIL PROTECTED]MTA RMKI, ELTE TTK __ R-help@stat.math.ethz.ch 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.
Re: [R] working with matrix
Yemi,
Try
which.max(apply(X,1,prod))
(or possibly abs(apply(X,1,prod)) if you're only interested in unsigned product
max.
S
Yemi Oyeyemi [EMAIL PROTECTED] 04/07/2007 17:18:41
I am new in R and I want to solve this problem;
I have a matrix X (with n-rows and p-colums) my problem is to obtain the
products of the vectors of rows and print out only the maximum value and
identify the row that gives the maximum value. Thanks
Oyeyemi, G.M
-
Don't pick lemons.
[[alternative HTML version deleted]]
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[R] Working with matrix
Dear, Thanks for your prompt assistant. The problem I posted is just a bit of my problem. The whole problem is that; 1. I simulated a multivariate data set X (n by p) 2. Then draw sample without replacement from X (k less than n) 3. Compute the eigen values of the variance-covariance matrix of the sample drawn 4. Store the eigen values in matrix eigenvals 5. Store the samples(that is the row identifier) drawn in rowvals 6. Bind the two matrices using rbind. The problem is; 7. Now I want the print out of the maximum values of the eigenvalues product and samples that give such maximum product. Thanks Oyeyemi Gafar M. - Fussy? Opinionated? Impossible to please? Perfect. Join Yahoo!'s user panel and lay it on us. [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch 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.
