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Full Discussion: Counting characters at each position
Top Forums Shell Programming and Scripting Counting characters at each position Post 302768215 by RudiC on Friday 8th of February 2013 06:50:42 AM
Old 02-08-2013
Try this as a starting point:
Code:
$ awk -F "" '     {for ( i=1; i<=NF;  i++) {freq[$i,i]++; Base[$i]} if (NF > max) max = NF}
             END  {for ( i=1; i<=max; i++)
                    {for (a in Base) print "Pos: ", i, ", Base: ", a, ", Freq: ", freq[a,i]}}
            ' file
Pos:  1 , Base:  A , Freq:  1
Pos:  1 , Base:  C , Freq:  1
Pos:  1 , Base:  G , Freq:  2
Pos:  1 , Base:  N , Freq:  
Pos:  1 , Base:  T , Freq:  2
Pos:  2 , Base:  A , Freq:  1
Pos:  2 , Base:  C , Freq:  2
Pos:  2 , Base:  G , Freq:  
Pos:  2 , Base:  N , Freq:  
Pos:  2 , Base:  T , Freq:  3
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.
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LEARN ABOUT SUNOS

mlib_vectormaximummag_s16c

mlib_VectorMaximumMag_U8C(3MLIB)			    mediaLib Library Functions				  mlib_VectorMaximumMag_U8C(3MLIB)

NAME

       mlib_VectorMaximumMag_U8C,  mlib_VectorMaximumMag_S8C,  mlib_VectorMaximumMag_S16C, mlib_VectorMaximumMag_S32C, mlib_VectorMaximumMag_F32C,
       mlib_VectorMaximumMag_D64C - find the first element with the maximum magnitude in a vector

SYNOPSIS

       cc [ flag... ] file... -lmlib [ library... ]
       #include <mlib.h>

       mlib_status mlib_VectorMaximumMag_U8C(mlib_u8 *max, const mlib_u8 *x, mlib_s32 n);

       mlib_status mlib_VectorMaximumMag_S8C(mlib_s8 *max, const mlib_s8 *x, mlib_s32 n);

       mlib_status mlib_VectorMaximumMag_S16C(mlib_s16 *max, const mlib_s16 *x, mlib_s32 n);

       mlib_status mlib_VectorMaximumMag_S32C(mlib_s32 *max, const mlib_s32 *x, mlib_s32 n);

       mlib_status mlib_VectorMaximumMag_F32C(mlib_f32 *max, const mlib_f32 *x, mlib_s32 n);

       mlib_status mlib_VectorMaximumMag_D64C(mlib_d64 *max, const mlib_d64 *x, mlib_s32 n);

DESCRIPTION

       Each of these functions finds the first element with the maximum magnitude in a complex vector, then puts the real and imaginary  parts	of
       it into max[0] and max[1], respectively.

PARAMETERS

       Each of the functions takes the following arguments:

       max	       Pointer to the first element with the maximum magnitude.

       x	       Pointer to the first element of the source vector.

       n	       Number of elements in the source vector.

RETURN VALUES

       Each of the functions returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_VectorMinimumMag_U8C(3MLIB), mlib_MatrixMaximumMag_U8C(3MLIB), mlib_MatrixMinimumMag_U8C(3MLIB), attributes(5)

SunOS 5.10							    9 Nov 2004					  mlib_VectorMaximumMag_U8C(3MLIB)
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