Use sort to sort numerical column Post: 303035328

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Top Forums Shell Programming and Scripting Use sort to sort numerical column Post 303035328 by sand1234 on Tuesday 21st of May 2019 08:38:43 AM

05-21-2019

Registered User

reviewing solutions

reviewing solutions

--- Post updated at 12:38 PM ---

Hi,

1st solution works:

Code:

$ sed 's/^ *//' bfd.txt | sort -bV

BE31.116              0s               0s               DOWN DAMP
BE31.116               0s               0s               DOWN DAMP
BE31.117              0s               0s               DOWN DAMP
BE31.702                 0s               0s               DOWN DAMP
BE31.961              0s               0s               DOWN DAMP
BE31.3918           0s               0s               DOWN DAMP
BE62.2040               0s               0s               DOWN DAMP

2nd solution fails:

Code:

$ sed 's/^ *//' bfd.txt | sort -k1.3,1n

BE31.116              0s               0s               DOWN DAMP
BE31.116              0s               0s               DOWN DAMP
BE31.117               0s               0s               DOWN DAMP
BE31.3918             0s               0s               DOWN DAMP  <----- incorrect
BE31.702                 0s               0s               DOWN DAMP
BE31.961            0s               0s               DOWN DAMP
BE62.2040               0s               0s               DOWN DAMP

Can you please shed some light on why the 2nd solution does not work?
Also, why do we need 1n after -k1,3? I get the same result with and without this switch.

Thanks,

Last edited by Scrutinizer; 05-21-2019 at 11:52 AM..

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LEARN ABOUT DEBIAN

dcsort

DCSORT(1)					      DICOM PS3 - Make sorted list of images						 DCSORT(1)

NAME

       dcsort - ACR/NEMA DICOM PS3 ... DICOM PS3 - Make sorted list of images

SYNOPSIS

       dcsort  "  inputfile1  [ inputfile2 ... ]" [ -v|verbose ] [ -vv|veryverbose ] [ -vvv|veryveryverbose ] [ -index ] [ -show ] [ -interval ] [
		 -tolerance mm ] [ -check ] [ -checkFoR ] [ -descending ] [ -sortby|k  attributename ]

DESCRIPTION

       dcsort reads the named dicom input files and sorts them by the specified sort key.

       The sort key should be a single valued numeric attribute, with the exception of ImageOrientationPatient and ImagePositionPatient which  are
       handled as special cases.

       There is no output by default unless the index or verbose options are specified.

OPTIONS

       The output and errors go to standard error.

       The basic input switches are described in dcintro(1). Options specific to this program are:

       -index
	      Creates a first column of output that is the index in the sort order, starting from 0, and a second column that is the filename.

       -show
	      Show the value of the sort key after the file name with the -index option

       -interval
	      Show the interval between values of the sort key, or an error if not equal

       -tolerance mm
	      The tolerance value in mm to use when comparing intervals between slices; defaults to +/- 0.01 mm if unspecified

       -check
	      Check that all the images are from the same series.

       -checkFoR
	      Check that all the images have the same Frame of Reference (UID).

       -descending
	      Sort in descending, rather than the default ascending, order.

       -sortby|k  attributename
	      Specify attributename as the sort key.

ENVIRONMENT


EXAMPLES


       % dcsort -index -sortby SliceLocation ./1/[0-9]*
       0    ./1/1
       1    ./1/2

FILES


SEE ALSO

       dcintro(1)

AUTHOR

       Copyright (C) 1993-2010. David A. Clunie DBA PixelMed Publishing. All rights reserved.

BUGS

DICOM PS3							 22 December 2006							 DCSORT(1)