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Full Discussion: Make change to variable value inside of awk script
Top Forums Shell Programming and Scripting Make change to variable value inside of awk script Post 303012765 by RudiC on Thursday 8th of February 2018 02:12:01 PM
Old 02-08-2018
Quote:
Originally Posted by LMHmedchem
Was this addressed to me?
Yes.
Quote:
I have run this version of the code on many files and it seems to work fine.
Do you need the line Mrv16a3102061815532D or not? The output as posted has it, the script doesn't provide it. Or, is there an empty line at the begin of the input not shown in the input sample?

Quote:
I like your method of changing the value stored in the output array instead of storing the modified value in a separate variable. . . .
Your analysis is correct.

Quote:
It seems like the getline OUT[++CNT] instruction would cause the counter to be off by one. Is the changed value of ++CNT only in scope inside the {}?
No. The getline reads a new line that needs to be inserted exactly one count above the last line read. Your desired header ("ID_" + name value) will be inserted BEFORE all the other lines at the array's zero element. If the Mrv16a3102061815532D line in NOT wanted, assign to OUT[1] and run the loop starting from i=1.
 

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LEARN ABOUT XFREE86

ppmtopgm

ppmtopgm(1)						      General Commands Manual						       ppmtopgm(1)

NAME

       ppmtopgm - convert a portable pixmap into a portable graymap

SYNOPSIS

       ppmtopgm [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as  input.  Produces a portable graymap as output.  The output is a "black and white" rendering of the original
       image, as in a black and white photograph.  The quantization formula used is .299 r + .587 g + .114 b.

       Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any  ppm  program  can
       read  pgm  (and	pbm  ) files automatically.  pgmtoppm is for colorizing a pgm file.  Also, see ppmtorgb3 for a different way of converting
       color to gray.  And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate  the  original
       colors, not necessarily a way that looks like a black and white photograph.

QUOTE

       Cold-hearted orb that rules the night
       Removes the colors from our sight
       Red is gray, and yellow white
       But we decide which is right
       And which is a quantization error.

SEE ALSO

       pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5)

AUTHOR

       Copyright (C) 1989 by Jef Poskanzer.

								   10 April 2000						       ppmtopgm(1)
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