Re: [R] Creating Matrix

Here is how you can apply the mat function mentioned by Cassardi, x-c(1, 2, 1, 3, 2) y-c(3, 1, 2, 3, 5) mat-matrix(c(x,y),5,2) ##the first parameter gives the data vector wich is filled columnwise in the matrix, then comes the row and column dimensions) colnames(mat)-c(x,y) you can

[R] Logical test and look up table

is of type 3 ...) so as to fill up automatically the $Type column. df() $Source$Type A23 A24 A9 A32 A25 A14 A10 A12 A11 A13 G Alternative solutions are also welcome. Thanks in advance P.S. I found a discussion mentioning match() and %in% but it does not seem adapted. -- Nikola Markov Inserm