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Full Discussion: Shell script - precent value
Top Forums Shell Programming and Scripting Shell script - precent value Post 302657319 by haczyk on Sunday 17th of June 2012 07:18:18 AM
Old 06-17-2012
Hello,

Code:
awk -F , '
    $2 != l  && NR > 1 {
        if ( sum )
        printf( "%s; %.3f\n", l, (f/sum) * 100 );
        f = sum = $1;
        l = $2;
        next;
    }
    {
        sum += $1;
        l = $2;
    }
    END {
        if( sum )
            printf( "%s; %.3f\n", l, (f/sum) * 100 );
    }
' input-file



Code:
 cat input-file
     39 ,2012/01,0
     22 ,2012/02,0
      2 ,2012/02,1
     23 ,2012/03,0
      3 ,2012/03,1
     16 ,2012/04,0
      2 ,2012/04,1
      8 ,2012/05,0
      2 ,2012/05,1
      2 ,2012/06,0
      2 ,2012/07,1

Code:
 bash awk
2012/01; 0.000
2012/02; 91.667
2012/03; 88.462
2012/04; 88.889
2012/05; 80.000
2012/06; 100.000
2012/07; 100.000

First line should have "100" instead.
2nd line from the bottom - its ok, but last line - it should be "0" instead "100"

Any advice ?
 

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LEARN ABOUT CENTOS

slassq

slassq.f(3)							      LAPACK							       slassq.f(3)

NAME

       slassq.f -

SYNOPSIS

   Functions/Subroutines
       subroutine slassq (N, X, INCX, SCALE, SUMSQ)
	   SLASSQ updates a sum of squares represented in scaled form.

Function/Subroutine Documentation
   subroutine slassq (integerN, real, dimension( * )X, integerINCX, realSCALE, realSUMSQ)
       SLASSQ updates a sum of squares represented in scaled form.

       Purpose:

	    SLASSQ  returns the values	scl  and  smsq	such that

	       ( scl**2 )*smsq = x( 1 )**2 +...+ x( n )**2 + ( scale**2 )*sumsq,

	    where  x( i ) = X( 1 + ( i - 1 )*INCX ). The value of  sumsq  is
	    assumed to be non-negative and  scl  returns the value

	       scl = max( scale, abs( x( i ) ) ).

	    scale and sumsq must be supplied in SCALE and SUMSQ and
	    scl and smsq are overwritten on SCALE and SUMSQ respectively.

	    The routine makes only one pass through the vector x.

       Parameters:
	   N

		     N is INTEGER
		     The number of elements to be used from the vector X.

	   X

		     X is REAL array, dimension (N)
		     The vector for which a scaled sum of squares is computed.
			x( i )	= X( 1 + ( i - 1 )*INCX ), 1 <= i <= n.

	   INCX

		     INCX is INTEGER
		     The increment between successive values of the vector X.
		     INCX > 0.

	   SCALE

		     SCALE is REAL
		     On entry, the value  scale  in the equation above.
		     On exit, SCALE is overwritten with  scl , the scaling factor
		     for the sum of squares.

	   SUMSQ

		     SUMSQ is REAL
		     On entry, the value  sumsq  in the equation above.
		     On exit, SUMSQ is overwritten with  smsq , the basic sum of
		     squares from which  scl  has been factored out.

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   September 2012

       Definition at line 104 of file slassq.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2							  Tue Sep 25 2012						       slassq.f(3)
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