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Top Forums Shell Programming and Scripting Awk: get upper and lower bound per group Post 303007272 by Scrutinizer on Tuesday 14th of November 2017 08:54:04 PM
Old 11-14-2017
If the files are always grouped and in sorted/increasing order per group, then something like this might suffice:
Code:
awk '{i=$1 FS $5; if(i!=p) {if(p) print p,l,h; l=$2; p=i} h=$3} END{print p,l,h}' file

Which would keep the group order of the input file

Last edited by Scrutinizer; 11-15-2017 at 12:55 AM..
 

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dlasrt.f(3)							      LAPACK							       dlasrt.f(3)

NAME
dlasrt.f - SYNOPSIS
Functions/Subroutines subroutine dlasrt (ID, N, D, INFO) DLASRT sorts numbers in increasing or decreasing order. Function/Subroutine Documentation subroutine dlasrt (characterID, integerN, double precision, dimension( * )D, integerINFO) DLASRT sorts numbers in increasing or decreasing order. Purpose: Sort the numbers in D in increasing order (if ID = 'I') or in decreasing order (if ID = 'D' ). Use Quick Sort, reverting to Insertion sort on arrays of size <= 20. Dimension of STACK limits N to about 2**32. Parameters: ID ID is CHARACTER*1 = 'I': sort D in increasing order; = 'D': sort D in decreasing order. N N is INTEGER The length of the array D. D D is DOUBLE PRECISION array, dimension (N) On entry, the array to be sorted. On exit, D has been sorted into increasing order (D(1) <= ... <= D(N) ) or into decreasing order (D(1) >= ... >= D(N) ), depending on ID. INFO INFO is INTEGER = 0: successful exit < 0: if INFO = -i, the i-th argument had an illegal value Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: September 2012 Definition at line 89 of file dlasrt.f. Author Generated automatically by Doxygen for LAPACK from the source code. Version 3.4.2 Tue Sep 25 2012 dlasrt.f(3)
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