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?

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