Reformat text table Post: 302486546

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Top Forums Shell Programming and Scripting Reformat text table Post 302486546 by Scrutinizer on Sunday 9th of January 2011 10:00:55 AM

01-09-2011

Moderator

Hi yifangt, you are welcome. Here is an explanation:

awk -F'[ \t:;,]*'	Use zero or more repetitions of the characters in square brackets as field separators
split($0,T)	Split the record $0 into array T, using FS as field separator, effectively creating a copy of $1 to $NF (allowing the reuse of $1 to $NF for output..)
for(i=NF;i>=2;i--)	reading backwards from the last field number to the 2nd ..
if (T[i]~/m[0-9]/)	if the array copy of field number "i" contains "m" followed by a digit,
{sub(/m/,x,T[i])	remove the letter m from that field.
$(T[i]+1)=c	Store the character contained in variable c into the field number contained in T[i] + 1. If for example T[i] contains 4 than store in $5
else c=T[i]	if the array copy of field number "i" does not contain m followed by a digit, it must be a new value which gets stored in variable c
NF=11	Cut off fields $12 until $NF, so that 11 fields remain
1	Print every record
OFS="\t"	Use tab as output field separator

With your actual raw data what is the required output?

S.

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LEARN ABOUT MINIX

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)