On 18/06/09 04:16, onyourmark wrote:
Hi. I have an object. I think it is a list.
It is a matrix
corTFandPCA <- runif(922*5)
dim(corTFandPCA) <- c(922,5)
dimnames(corTFandPCA) <- list(paste("abdomen",2:923,sep="."),
paste("PC",1:5,sep=""))
str(corTFandPCA)
# num [1:922, 1:5] 0.17 0.285 0.388 0.995 0.211 ...
# - attr(*, "dimnames")=List of 2
# ..$ : chr [1:922] "abdomen.2" "abdomen.3" "abdomen.4" "abdomen.5" ...
# ..$ : chr [1:5] "PC1" "PC2" "PC3" "PC4" ...
I want to order it according to PC1.
I tried this
dfCorTFandPCA=as.data.frame(corTFandPCA)
orderedCorTFandPCA=dfCorTFandPCA[order(PC1)]
Try
corTFandPCA[order(corTFandPCA[,"PC1"]),]
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