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Full Discussion: Excel vlookup function like value mapping with awk
Top Forums Shell Programming and Scripting Excel vlookup function like value mapping with awk Post 303000946 by sammy777888 on Monday 24th of July 2017 09:00:07 AM
Old 07-24-2017
Excel vlookup function like value mapping with awk
I have two files

File1
Code:
175552 st_497858.1 rs86052.1 rs92185.1 st_001022416.1 174841 175552_174841
179912 st_001122967.2 rs90435.1 rs89122.1 st_001022583.1 175545 179912_175545
179912 st_001122967.2 rs90435.1 rs89122.1 st_001022584.1 175545 179912_175545
179967 st_001256606.1 rs93516.2 rs86923.1 st_501841.1 177879 179967_177879

File2
Code:
179967_177879 0.75
179912_175545 0.5

Desired output File3
Code:
175552 st_497858.1 rs86052.1 rs92185.1 st_001022416.1 174841 175552_174841 NA
179912 st_001122967.2 rs90435.1 rs89122.1 st_001022583.1 175545 179912_175545 0.5
179912 st_001122967.2 rs90435.1 rs89122.1 st_001022584.1 175545 179912_175545 0.5
179967 st_001256606.1 rs93516.2 rs86923.1 st_501841.1 177879 179967_177879 0.75


I want to match the 7th column of File1 with 1st column of File2 and map the corresponding values at 8th cloumn. If any id of 7th column is not avalible (such as 175552_174841 here) in File 2 it should print NA. Here is what I did

Code:
awk 'NR == FNR{a[$7] = $1;next}; {print $0, $7 in a?a[$1]: "NA"}' File2 File1

The current output
Code:
175552 st_497858.1 rs86052.1 rs92185.1 st_001022416.1 174841 175552_174841 NA
179912 st_001122967.2 rs90435.1 rs89122.1 st_001022583.1 175545 179912_175545 NA
179912 st_001122967.2 rs90435.1 rs89122.1 st_001022584.1 175545 179912_175545 NA
179967 st_001256606.1 rs93516.2 rs86923.1 st_501841.1 177879 179967_177879 NA

Could someone please help to correct the code and explain it a bit. Thanks
 

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LEARN ABOUT CENTOS

paps

PAPS(1) 						      General Commands Manual							   PAPS(1)

NAME

       paps - UTF-8 to PostScript converter using Pango

SYNOPSIS

       paps [options] files...

DESCRIPTION

       paps reads a UTF-8 encoded file and generates a PostScript language rendering of the file. The rendering is done by creating outline curves
       through the pango ft2 backend.

OPTIONS

       These programs follow the usual GNU command line syntax, with long options starting with  two  dashes  (`-').   A  summary  of  options	is
       included below.

       --landscape
	      Landscape output. Default is portrait.

       --columns=cl
	      Number of columns output. Default is 1.

       --font=desc
	      Set the font description. Default is Monospace 12.

       --rtl  Do rtl layout.

       --paper ps
	      Choose paper size. Known paper sizes are legal, letter, a4. Default is A4.

       --bottom-margin=bm
	      Set bottom margin in postscript points (1/72 inch). Default is 36.

       --top-margin=tm
	      Set top margin. Default is 36.

       --left-margin=lm
	      Set left margin. Default is 36.

       --right-margin=rm
	      Set right margin. Default is 36.

       --help Show summary of options.

       --header
	      Draw page header for each page.

       --markup
	      Interpret the text as pango markup.

       --encoding=ENCODING
	      Assume the documentation encoding is ENCODING.

       --lpi  Set the lines per inch. This determines the line spacing.

       --cpi  Set the characters per inch. This is an alternative method of specifying the font size.

       --stretch-chars
	      Indicates  that  characters  should be stretched in the y-direction to fill up their vertical space. This is similar to the texttops
	      behaviour.

AUTHOR

       paps was written by Dov Grobgeld <dov.grobgeld@gmail.com>.

       This manual page was written by Lior Kaplan <kaplan@debian.org>, for the Debian project (but may be used by others).

								  April  17, 2006							   PAPS(1)
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