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Full Discussion: Add 0 values to replace empty value
Top Forums Shell Programming and Scripting Add 0 values to replace empty value Post 302803431 by hanson44 on Monday 6th of May 2013 05:58:06 PM
Old 05-06-2013
Code:
$ sed ":a s/^\(.\{120,125\}\) /\10/; T; ba" input
A          4175.0  8055.01211 75   1  -2172671 77 45 16 457626.4 2609265.1 131.3  1090 102 1                   1T N/A124000015 0.8    1051670971100000
A          4175.0  8055.012 7 75   2  -5204072 78 43 25 457627.7 2609284.5 131.8  1090 102 1                   1T N/A124000015 0.8    1051670971100000
A          4173.0  8055.01211 75   1  -3142772 77 61 18 457624.6 2609212.6 131.1  1089 102 1                   1T N/A124000009 0.8    1051671025148000
A          4173.0  8055.012 7 75   1  -3132772 79 61 16 457625.2 2609231.2 131.1  1089 102 1                   1T N/A124000009 0.8    1051671025148000
A          4171.0  8055.01211 75   1   3142671 77 40 26 457622.6 2609161.0 131.6  1088 102 1                   1T N/A124005121 0.8    1051671097224000
A          4171.0  8055.012 7 75   1   3162772 77 48 20 457622.2 2609179.5 131.2  1088 102 1                   1T N/A124005121 0.8    1051671097224000
A          4169.0  8055.01211 75   1   3152571 77 34 26 457625.4 2609110.6 131.9  1087 102 1                   1T N/A124055215 0.8    1051671151300000
A          4169.0  8055.012 7 75   1  -2172972 78 43 27 457624.3 2609129.2 131.8  1087 102 1                   1T N/A124055215 0.8    1051671151300000
A          4167.0  8055.01211 75   1   3162971 75 36 25 457626.9 2609064.4 131.6  1086 102 1                   1T N/A124155327 0.8    1051671223416000
A          4167.0  8055.012 7 75   1  -3142772 76 43 26 457627.0 2609083.5 132.5  1086 102 1                   1T N/A124155327 0.8    1051671223416000

This User Gave Thanks to hanson44 For This Post:
Scrutinizer
 

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LEARN ABOUT LINUX

ppmtosixel

ppmtosixel(1)						      General Commands Manual						     ppmtosixel(1)

NAME

       ppmtosixel - convert a portable pixmap into DEC sixel format

SYNOPSIS

       ppmtosixel [-raw] [-margin] [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as input.  Produces sixel commands (SIX) as output.	The output is formatted for color printing, e.g. for a DEC
       LJ250 color inkjet printer.

       If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled.  A printer control header and a color assignment table
       begin the SIX file.  Image data is written in a compressed format by default.  A printer control footer ends the image file.

OPTIONS

       -raw   If  specified,  each  pixel  will  be explicitly described in the image file.  If -raw is not specified, output will default to com-
	      pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands.  A raw file is often an order	of  magni-
	      tude larger than a compressed file and prints much slower.

       -margin
	      If  -margin  is not specified, the image will be start at the left margin (of the window, paper, or whatever).  If -margin is speci-
	      fied, a 1.5 inch left margin will offset the image.

PRINTING

       Generally, sixel files must reach the printer unfiltered.  Use the lpr -x option or cat filename > /dev/tty0?.

BUGS

       Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion.  If the original PPM maxval was
       greater	than  100,  rescaling  also reduces the image depth.  While the actual RGB values from the ppm file are more or less retained, the
       color palette of the LJ250 may not match the colors on your screen.  This seems to be a printer limitation.

SEE ALSO

       ppm(5)

AUTHOR

       Copyright (C) 1991 by Rick Vinci.

								   26 April 1991						     ppmtosixel(1)
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