Hi everyone After the following setup sector=2 # Define Number of Sectors
sectors=LETTERS[seq( from = 1, to = sector )] # Name sectors No_ent=round(3/runif(sector)) # Number of entities per sector #Tot_No_ent=sum(No_ent) Goal is to get a List like (A1, A2, A3, B1, B2, B3, B4) where A is denoting an industrial sector and then a numbered sequence of companies within the sector. The step I am missing is how to generate a sequence of vectors (one for each sector) with individual length being determined by No_ent. The goal is to generate a set of entities from different sectors. One simple way out of it would be to set the number of entities equal per sector and have a matrix, but I am quite sure it should also be possible for having a different number of entities in each sector. Once this is done, I can bind them together as vector with "as.vector(rbind(?))" (both as an (A,A,A,B,B,B,B) and (1,2,3,1,2,3,4) and then concatenate) Thanks, Christian Trials included the following bits A=for (i in 1:sector){ rep(i,No_ent[i]) } paste(LETTERS[i], seq(from =1, to =No_ent[i]), sep = "") but I don't get the correct object definition right. [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.