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Shell Programming and Scripting

working with multiple columns

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# 1  
Old 03-09-2012
working with multiple columns
Hi,

I have a file with 270 column.

Code:
5.5 8.8 9.6 5.4...............9.9 7.0 3.4
.
.
.
.
.
8.8 5.7 6.3 4.1 3.8 9.9...........5.5 6.4 3.2

The last two values are my mean and std. I want for every cell content subtract it with the mean and divide by std and output the values

example (5.5-7.0)/3.4..........................(9.9-7.0)/3.4

I can do this in excel but its takes lot of memory and making my programs slow.


Thanks,
# 2  
Old 03-09-2012
Code:
awk '{ M=$(NF-1);  S=$NF;  for(N=1; N<=(NF-2); N++) { $N = ($N-M)/S } } 1' filename > outputfile

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