dim {CALIB} | R Documentation |
Retrieve the number of rows (genes) and columns (arrays) for an RGList_CALIB or SpikeList
## S3 method for class 'RGList_CALIB': dim(x) ## S3 method for class 'RGList_CALIB': length(x)
x |
an object of class RGList_CALIB or SpikeList . |
Microarray data objects share many analogies with ordinary matrices in which the rows correspond to spots or genes and the columns to arrays. These methods allow one to extract the size of microarray data objects in the same way that one would do for ordinary matrices.
A consequence is that row and column commands nrow(x)
,
ncol(x)
and so on also work.
Numeric vector of length 2. The first element is the number of rows(genes) and the second is the number of columns(arrays).
Hui Zhao
dim
in limma package
dim
in the base package
dim
in the limma package
# for RGList_CALIB R <- G <- matrix(1:8,4,2) rownames(R) <- rownames(G) <- c("g1","g2","g3","g4") colnames(R) <- colnames(G) <- c("a1","a2") RG <- new("RGList_CALIB",list(R=R,G=G)) dim(RG) # for SpikeList SR <- SG <- matrix(1:8,4,2) rownames(SR) <- rownames(SG) <- c("s1","s2","s3","s4") colnames(SR) <- colnames(SG) <- c("a1","a2") spike <- new("SpikeList",list(R=SR,G=SG)) dim(spike)