Re: [R] sorting a matrix by the column

Use 'drop=FALSE' > temp2 <- matrix(rnorm(10),nc=1) > rownames(temp2) <- c("a","b","c","d","e","f","g","h","i",'j') > print(temp2) [,1] a -0.5686687 b -0.1351786 c 1.1780870 d -1.5235668 e 0.5939462 f 0.3329504 g 1.0630998 h -0.3041839 i 0.3700188 j 0.2670988 > temp2 <- temp2[order(te

Re: [R] sorting a matrix by the column

This is what I get: > temp2 <- matrix(rnorm(10),nc=1,nrow=5) > rownames(temp2) <- c("a","b","c","d","e","f","g","h","i") Error in dimnames(x) <- dn : length of 'dimnames' [1] not equal to array extent > R.version.string [1] "R version 2.8.1 Patched (2008-12-26 r47350)" On Wed, Feb 11, 2009 at 1

[R] sorting a matrix by the column

this is a bad question but I can't figure it out and i've tried. if i sort the 2 column matrix , temp1, by the first column, then things work as expected. But, if I sort the 1 column matrix, temp2, then it gets turned coerced to a vector. I realize that I need to use drop=FALSE but i've put it i