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Top Forums Shell Programming and Scripting Find the closest value in another csv file preceding it and following it? Post 302769843 by Chubler_XL on Wednesday 13th of February 2013 04:12:16 PM
Old 02-13-2013
Are the two files sorted like your example data implies?

If there are no proceeding/following value should it print a blank line in it's place or just 1 value instead?

---------- Post updated at 07:12 AM ---------- Previous update was at 06:47 AM ----------

Here is a solution if both files are sorted that prints blank when proceeding or following value not available:

Code:
awk -F, 'FNR==NR{V[NR]=$2; L[NR]=$0; next}
{ 
  while(((k+1) in V) && $1 > V[k+1]) k++
  if ($1<V[k]) printf "\n"
  else print L[k];
  if (!(k+1 in V)) printf "\n"
  else print L[k+1]
}' fileb filea

 

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OCR4GAMERA(1)															     OCR4GAMERA(1)

NAME
ocr4gamera - OCR system using the Gamera framework USAGE
ocr4gamera -x <traindata> [options] <imagefile> OPTIONS
-v <int>, --verbosity=<int> Set verbosity level to <int>. Possible values are 0 (default): silent operation; 1: information on progress; >2: segmentation info is written to PNG files with prefix debug_. -h, --help Display help and exit. -d, --deskew Do a skew correction (recommended). -f, --filter Filter out very large (images) and very small components (noise). -a, --automatic-group Autogroup glyphs with classifier. -x <file>, --xmlfile=<file> Read training data from <file>. -o <xml>, --output=<xml> Write recognized text to file <xml> (otherwise it is written to stdout). -c <csv>, --extra_chars_csvfile=<csv> Read additional class name conversions from file <csv>. <csv> must contain one conversion per line. -R <rules>, --heuristic_rules=<rules> Apply heuristic rules <rules> for disambiguation of some chars. <rules> can be roman (default) or none (for no rules). -D, --dictionary-correction Correct words using a dictionary (requires aspell or ispell). -L <lang>, --dictionary-language=<lang> Use <lang> as language for aspell (when option -D is set). -e <int>, --edit-distance=<int> Correct words only when edit distance not more than <int>. OCR4GAMERA(1)
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