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Full Discussion: Region between lines
Top Forums Shell Programming and Scripting Region between lines Post 302717153 by rdrtx1 on Wednesday 17th of October 2012 03:37:02 PM
Old 10-17-2012
Code:
awk '
rd>1 && $4 == 0 {
  if (ev==4) print col,bv,$2;
}
rd==1 { bv=$2; rd++; }
rd>1 {
  if ($4>ev) ev=$4;
}
$2 > 0 && $4==0 {
  ev=$4;
  col=$1;
  rd=1;
}
' infile

 

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LEARN ABOUT DEBIAN

vcrop

vcrop(1Vi)																vcrop(1Vi)

NAME

       vcrop - crop an image

SYNOPSIS

       vcrop [-option ...] [infile] [outfile]

DESCRIPTION

       vcrop crops a file of images using a cropping rectangle specified by command line options.

COMMAND LINE OPTIONS

       vcrop accepts the following options:

       -help	      Prints a message describing options.

       -in infile     Specifies a Vista data file containing the input images.

       -out outfile   Specifies where to write the cropped images as a Vista data file.

       -top row       Specifies the first (top) row of the cropping rectangle.

       -bottom row    Specifies the last (bottom) row of the cropping rectangle.

       -left col      Specifies the first (leftmost) column of the cropping rectangle.

       -right col     Specifies the last (rightmost) column of the cropping rectangle.

       -height nrows  Specifies the height of the cropping rectangle.

       -width ncols   Specifies the width of the cropping rectangle.

       The  cropping  rectangle must be unambiguously specified by using any two of -top, -bottom, and -height, plus any two of -left, -right, and
       -width.

       The cropping rectangle may fall partially or completely outside an image it is cropping; in that case, the  area  outside  is  filled  with
       zeros.

       Input and output files can be specified on the command line or allowed to default to the standard input and output streams.

SEE ALSO

       vxcrop(1Vi), VImage(3Vi), Vista(7Vi)

AUTHOR

       Ralph Horstmann <horstman@cs.ubc.ca>

Vista Version 1.12						   24 April 1993							vcrop(1Vi)
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