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Top Forums Shell Programming and Scripting Can anyone tell me what's wrong with my script Post 302768783 by Akshay Hegde on Saturday 9th of February 2013 03:11:44 PM
Old 02-09-2013
Hammer & Screwdriver Logic I want to use in awk script

Code:
I just want to use this logic in shell awk script

1 . First read column 1 and column 2 of file1.txt store it in array(reference)

2 . Now read column 1 and column 2 of file2.txt store it in another array,to be compared with reference 

3 . for loop : - for(i=1;i<=file2.txt_length;i++)

4 . x=0; y=0 this will get clear as and when i will increment

5 . nested loop :-  for(j=1;j<=file1.txt_lenght;j++)

6 . if(col1_f1[j]>=col1_f2-0.1[i] && col1_f1[j]<=col1_f2+0.1[i])

if above if statement is true then,go to following statement else check condition with j++

7 . if(col2_f2[i]>=col2_f1[j]) then x=x+1

8 . if(col2_f2[i]<=col2_f1[j]) then y=y+1

repeat 5,6,7 and 8 till j reaches file1.txt_length(NR),Once j reaches NR following

9 . if(x>=1 && y>=1) then print column1_f2[i] column2_f2[i] 

repeat statements after number 4 to 9 till i reaches file2.txt_length(NR)

I hope this will be helpful

this logic is to find whether file 2.txt is falling within the range of file1.txt(reference)
if falling, how many records are near to records of file1.txt

and this is for mapping purpose, one can see script's result preview in GMT, with reference file

I am trying to write the same logic in awk script, but I couldn't succeed..those who know...awk very well pls help

Thanks in advance.........................

Last edited by Akshay Hegde; 02-10-2013 at 09:53 AM.. Reason: ???? Awaiting for reply......
 

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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)
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