..........................
I want to split the last three columns into many small ones. if the fourth column, namely "ACC' is zero, I want to put them into a txt file, named "s00x_run1_condition1_ACC0". If the fourth column, namely "ACC' is one, I want to put them into a txt file, named "s00x_run1_condition1_ACC1"
For example, in the first two rows, the ACC column is zero, so I put the first and the second column into one txt file, and named "s00x_run1_condition1_ACC1", there are 50 subjects and every subject have 6 runs, and every runs have 3 conditions.
Although I can do those manually, it is a time-consuming task. Thus, if anybody could help, it will be greatly appreciated!
Thank you very much in advance!
Last edited by Don Cragun; 08-04-2013 at 02:04 AM..
Reason: Add CODE tags.
Please add a few lines to your sample input for a subject with a 2-digit subject number, and then show us the exact names of the output files you want to have produced from that input and the contents that should be saved in each of those files.
You show the name of the output files as s00x_run1_condition1_ACC1. Does that mean that subject 25 should have filename s00x_run1_condition1_ACC1, s0025_run1_condition1_ACC1, or s025_run1_condition1_ACC1?
What field delimiter do you want between output fields? Your input has tabs as separators for most fields; but some use a space and a tab; and some use a space, a tab, and several more spaces?
Do you want to throw away the data in the 1st four fields in the new, split files; or do you want to preserve the current lines but just split them into new files?
This User Gave Thanks to Don Cragun For This Post:
Thank you for your generous help! I am sorry that I did not make it clear. The original post may difficult to understand. So, I made some changes. I make the file into four columns like this:
I also attached the file. I would like to split the file into new txt files, the first column will be the name of the new file, and the second to the fourth column is the content of the new file. If the first column is the same, the second to the fourth column will be composed a new file. For example, the first file I want to is
awk '
FNR == 1 { next } # Skip header.
last != $1","$2","$3","$4 { # Switch to new file.
if(fn != "") close(fn) # close previous output file.
fn = sprintf("s%03d_run%d_condition%d_ACC%d", $1, $2, $3, $4) # Set new output file name.
last = $1","$2","$3","$4 # Save key for new file.
}
{ print > fn } # Add line to split file.
' a.txt
If you want to run this on a Solaris/SunOS system, change awk to /usr/xpg4/bin/awk, /usr/xpg6/bin/awk, or nawk.
Note that this script is based on a few assumptions:
The split files should not contain a header line; only data lines.
The input lines for a every combination of subject, run, condtion, and ACC are all adjacent in your input file.
If there are any split output files from a previous run, you want to replace those files rather than append the new data to them.
If any of these assumptions are incorrect, this script will need to be modified.
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08-04-2013
