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Top Forums Shell Programming and Scripting Median and max of duplicate rows Post 302838977 by ritakadm on Wednesday 31st of July 2013 03:29:02 AM
Old 07-31-2013
Median and max of duplicate rows

Hi all,

plz help me with this, I want to to extract the duplicate rows (column 1) in a file which at least repeat 4 times. then I want to summarize them by getting the max , mean, median and min. The file is sorted by column 1, all the repeated rows appear together.

If number of elements is odd, median is middle one , eg 4th element among 7 sorted numbers ... element number (n+1)/2
If number of elements is even, it is the average of middle 2, eg. average of 4th and 5th element for set of 8 sorted numbers...average of n/2 + 1 and n/2

Code:
Inp

R1 1
R1 2
R1 3
R2 1
R2 2
R2 3
R2 100
R3 5


output

R2 100 26.25 2.5 1

I figured our uniq -d option will give me the duplicate lines, but how do I work with at least 4?


Also, I tried to find the mean and median, getting errors but trying to get this to work.


Code:
sort -n file | awk ' { a[i++]=$2;  N[$1]++}
    END { for (key in i) {
                        avg = sum[key] / N[key];}
x=int((i+1)/2); 
if (x < (i+1)/2)
 print (a[x-1]+a[x])/2 " " avg; 
else print a[x-1] " " avg; }'

 

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PGASetRealInitPercent(2)					      PGAPack						  PGASetRealInitPercent(2)

NAME
PGASetRealInitPercent - sets the upper and lower bounds for randomly initializing real-valued genes. DESCRIPTION
For each gene these bounds define an interval from which the initial allele value is selected uniformly randomly. With this routine the user specifies a median value and a percent offset for each allele. INPUT PARAMETERS
ctx - context variable median - an array containing the mean value of the interval percent - an array containing the percent offset to add and subtract to the median to define the interval OUTPUT PARAMETERS
none SYNOPSIS
#include "pgapack.h" void PGASetRealInitPercent(ctx, median, percent) PGAContext *ctx double *median double *percent LOCATION
real.c EXAMPLE
Set the initialization routines to select a value for each real-valued gene i uniformly randomly from the interval [i-v,i+v], where $v = i/2$. Assumes all strings are the same length. PGAContext *ctx; double *median, *percent; int i, stringlen; : stringlen = PGAGetStringLength(ctx); median = (double *) malloc(stringlen*sizeof(double)); percent = (double *) malloc(stringlen*sizeof(double)); for(i=0;i<stringlen;i++) { median[i] = (double) i; percent[i] = 0.5; } PGASetRealInitPercent(ctx, median, percent); 05/01/95 PGASetRealInitPercent(2)
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