dataFile = read.csv("filename.csv",header= TRUE);
#suppose u want col 1, col 9 and col 15
col1 = 1;
col9 = 9;
col15 = 15;
modifiedDataFile1 = dataFile[,c(col1, col9, col15)];
#if u want rows from 1-100 and then 1000-5000
modifiedDataFile2 = dataFile[c(1:100, 1000:5000), ];
#If u want to select rows and col simultaneously as specified above then
modifiedDataFile = dataFile[c(1:100, 1000:5000), c(col1, col9, col15)];
Hope this will work.
Thanks
Fahim Mohammad
Grad student
CECS, Univ of Louisville
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