Hey, I am having an issue with a for loop that is intended to read index values by row and column so that it can pull out the valuable information. My issue is that I am using a data.frame(which(df==1, arr.ind=TRUE)) to find the index of the values in my data frame that are equal to 1. This outputs a data frame of 71 rows which is confirmed by the "nrows" function. However, when I try to break up the rows and columns using the code below I am producing two vectors of 75 values, even though there are only 71 and the for loop is from 1 to the value of 71. Am I making this task more complicated than it needs to be?
if(countRaw > 0){ index_R_df<-rbind(index_R_df,data.frame(which(sapply(data2[0:24,], match, INDString, nomatch=0)==1, arr.ind=TRUE))) index_lengthR<-nrow(index_R_df) for (j in 1:index_lengthR){ index_rowsR<-c(index_rowsR, index_R_df[j,1]) index_colsR<-c(index_colsR, index_R_df[j,2]) #rowsPass_R<-c(unique(index_rowsR)) #collect_rows<-c(collect_rows, rowsPass_R) } I'm sorry if this seems very novice, I'm new to R. -Kevin ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.