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Top Forums UNIX for Dummies Questions & Answers setting environment variable in awk Post 302304346 by tintin72 on Monday 6th of April 2009 07:37:15 AM
Old 04-06-2009
setting environment variable in awk

Dear all,

I have a data sample...

Code:
 
Dose: Summed 
ROI: Bladder
**************************
Bin        Dose      Volume
001       0.700     100.000
002       0.715      99.998
168       3.142       0.368
169       3.157       0.338
170       3.171       0.292
 
Dose: Summed 
ROI: Rectum
**************************
Bin        Dose      Volume
001       0.233     100.00
003       0.357      96.725
152       9.582       0.481

to select everything between the strings Bladder & Rectum, I use the command
Code:
awk '/Bladder/,/Rectum/' inputfile > outputfile

SmilieIt works. So far so good...my problem however is that this step is not the 1st stage in my code. The 1st stage requires the user to input all the organs of interest into an array using
Code:
read -a structure

therefore "Bladder" is defined by ${structure[0]} and "Rectum" as ${structure[1]}. But the command
Code:
awk '/$[structure[0]}/,/${structure[1]}/' inputfile > outputfile

gives an outputfile with zero entriesSmilie.

Can someone tell me what I am doing wrong? Thanks.
 

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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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