Fills one corner of a matrix with the supplied values, leaving the rest filled with a default value.
fill.corner(x,nrow,ncol,na.value=NA)An nrow by ncol matrix containing the values in x.
A vector of values.
The number of rows and columns in the matrix to be returned.
The default value for unfilled cells.
Jim Lemon
fill.corner creates an nrow by ncol matrix and fills the lower left corner with the values supplied in x. If there are more values in x than cells in the matrix, only the first nrow*ncol values will be inserted.