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Full Discussion: Sum values & compare with footer
Top Forums Shell Programming and Scripting Sum values & compare with footer Post 302249696 by summer_cherry on Tuesday 21st of October 2008 10:25:05 PM
Old 10-21-2008
Code:
line=`cat filename | wc -l`
nawk -v l="$line" -F"~" '{
if(NR<l)
	p=p+$3
else
	c=$2
}
END{
	if(p>c)
		print "Sum of parts is larger than the checksum"
	else if (p<c)
		print "Sum of parts is less than the checksum"
	else
		print "Match"
}' filename

 

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LEARN ABOUT HPUX

pgmtexture

pgmtexture(1)						      General Commands Manual						     pgmtexture(1)

NAME

       pgmtexture - calculate textural features on a portable graymap

SYNOPSIS

       pgmtexture [-d d] [pgmfile]

DESCRIPTION

       Reads  a  portable graymap as input.  Calculates textural features based on spatial dependence matrices at 0, 45, 90, and 135 degrees for a
       distance d (default = 1).  Textural features include:

	      (1) Angular Second Moment,
	      (2) Contrast,
	      (3) Correlation,
	      (4) Variance,
	      (5) Inverse Difference Moment,
	      (6) Sum Average,
	      (7) Sum Variance,
	      (8) Sum Entropy,
	      (9) Entropy,
	      (10) Difference Variance,
	      (11) Difference Entropy,
	      (12, 13) Information Measures of Correlation, and
	      (14) Maximal Correlation Coefficient.

       Algorithm taken from:
       Haralick, R.M., K. Shanmugam, and I. Dinstein. 1973. Textural features for image classification.  IEEE Transactions on  Systems,  Man,  and
       Cybertinetics, SMC-3(6):610-621.

BUGS

       The  program  can  run incredibly slow for large images (larger than 64 x 64) and command line options are limited.  The method for finding
       (14) the maximal correlation coefficient, which requires finding the second largest eigenvalue of a matrix Q, does not always converge.

REFERENCES

       IEEE Transactions on Systems, Man, and Cybertinetics, SMC-3(6):610-621.

SEE ALSO

       pgm(5), pnmcut(1)

AUTHOR

       Copyright (C) 1991 by Texas Agricultural Experiment Station, employer for hire of James Darrell McCauley.

								    22 Aug 1991 						     pgmtexture(1)
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