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Top Forums Shell Programming and Scripting Read column and find differences... Post 302723309 by Chubler_XL on Monday 29th of October 2012 09:41:35 PM
Old 10-29-2012
It makes two passes of the file (this is why filename is passed on commandline twice).

First pass stores all the IDs (field 1) in k[]:

Code:
FNR==NR{k[$1];next}

The Second pass blanks the string v then builds it up with all the ids within 10 of the current (excluding the current line of course):
Code:
v=x; for(i=$1-10;i<=$1+10;i++) if(i!=$1&&i in k) v=v","i;

This value v is then stripped of the first comma and added as a new field on the end of the line
Code:
$(NF+1)=substr(v,2)

1 this is a true expression and will cause awk to print the current line (ie the line that was just appended with v's contents).

OFS="\t" sets output fieldsep to TAB

Last edited by Chubler_XL; 10-29-2012 at 10:46 PM..
 

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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)
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