Re: [R] transforming a data frame to matrix

On Feb 18, 2012, at 8:35 AM, Adel ESSAFI wrote: with simpler expressions: if I have a dataframe A B C is it possible de transform it to a matrix where nrow(A) colomns, nrow(B) row and for each value of C, we put the corresponding value in the matrix. Perhaps: xtabs(C ~ A + B, data=dfrm

Re: [R] transforming a data frame to matrix

Adel, I don't fully understand your question. Please try to explain what you want to do again. In general to change a data frame to a matrix, all one needs to do is use the as.matrix function. # Create dataframe mydataframe1 <- data.frame(x=1:3, y=10:12) mydataframe1 class(mydataframe1) # Conver

Re: [R] transforming a data frame to matrix

with simpler expressions: if I have a dataframe A B C is it possible de transform it to a matrix where nrow(A) colomns, nrow(B) row and for each value of C, we put the corresponding value in the matrix. Regards Le 18 février 2012 13:57, Adel ESSAFI a écrit : > Hello > > > orderulcount >Gr

[R] transforming a data frame to matrix

Hello > orderulcount Group.1 Group.2 Group.3 xV5 7C L 0.0 30 C / L 19 C L 0.2 27 C / L 31 C L 0.4 15 C / L 43 C L 0.6 7 C / L 54 C L 0.8 2 C / L 10 C S 0.0 27 C / S 22 C S 0.