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Full Discussion: awk- comparing fields from the same column, finding discontinuities.
Top Forums Shell Programming and Scripting awk- comparing fields from the same column, finding discontinuities. Post 302513786 by |UVI| on Thursday 14th of April 2011 05:20:55 AM
Old 04-14-2011
Quote:
Originally Posted by acsg



Lines 5, 6, 7 shouldn't be seen as a discontinuity since I have a lot of those in the input file Smilie
Code:
cat input.txt | awk 'BEGIN{ 
  while (getline  > 0){
    if ( NR > 1 ){
      C1 = $1 
      C2 = $2

      if ( P1 == C1 && P2 != C2){
        if ( (P2+1)%16 != C2 )
          data_array[$1]++
      }
    }
    P1 = $1
    P2 = $2
  }
}

END{
  for (var in data_array)
    if ( data_array[var] > 1)
      print "Channel " var " : "  data_array[var] " discontinuities"
    else
      print "Channel " var " : "  data_array[var] " discontinuity"
}'

now should be works

---------- Post updated at 04:20 AM ---------- Previous update was at 03:58 AM ----------

using this the program prints also channel with 0 discontinuities Smilie

Code:
cat input.txt | awk 'BEGIN{ 
  while (getline  > 0 && NF > 0){
    data_array[$1]+=0
    if ( NR > 1 ){
      C1 = $1 
      C2 = $2

      if ( P1 == C1 && P2 != C2){
        if ( (P2+1)%16 != C2 )
          data_array[$1]++
      }
    }
    P1 = $1
    P2 = $2
  }
}

END{
  for (var in data_array)
    if ( data_array[var] = 1)
      print "Channel " var " : "  data_array[var] " discontinuity"
    else
      print "Channel " var " : "  data_array[var] " discontinuities"
}'

This User Gave Thanks to |UVI| For This Post:
acsg
 

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BLOCKDIAG(1)						      General Commands Manual						      BLOCKDIAG(1)

NAME

       blockdiag - generate block-diagram image file from spec-text file.

SYNOPSIS

       blockdiag [options] file

DESCRIPTION

       This manual page documents briefly the blockdiag commands.

       blockdiag is a program that generate block-diagram image file from spec-text file.

OPTIONS

       These  programs	follow	the  usual  GNU  command  line	syntax, with long options starting with two dashes (`-').  A summary of options is
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       --version
	      show program's version number and exit

       -h, --help
	      Show summary of options

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	      Pass diagram image to anti-alias filter

       -c FILE, --config=FILE
	      read configurations from FILE

       -o FILE
	      write diagram to FILE

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	      use FONT to draw diagram

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SEE ALSO

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AUTHOR

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								   May	9, 2011 						      BLOCKDIAG(1)
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