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2011 Jul 12
1
Creating a zero matrix when a condition doesn´t get it
Hi all, I first create a matrix/data frame called "d2" if another matrix accomplishes some restrictions "dacc2" da2<-da1[colSums(dacc2)>9,] da2<-da2[(da2[,13]=24),] write.csv(da2, file =paste('hggi', i,'.csv',sep = '')) The thing is if finally da2 cannot get/passs the filters, it cannot writte a csv because there is no any true condition. How can I create anyway a csv with zeros of one row and "n" columns (being n the number of columns of da2? I need a loop?...