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Full Discussion: Problem with getting awk to multiply a field by a value set based on condition of another field
Top Forums UNIX for Beginners Questions & Answers Problem with getting awk to multiply a field by a value set based on condition of another field Post 303043632 by RudiC on Sunday 2nd of February 2020 03:06:18 PM
Old 02-02-2020
How far would this get you, printing the weighted total for each student. The weight per category is delivered in file1 in the form you posted :
Code:
awk '
FNR == NR       {WEIGHT[$1] = $3
                 next
                }
FNR == 1        {next
                }
                {SUM[$1] += $4 * WEIGHT[$2]
                }
END             {for (s in SUM) print s, SUM[s]
                }
' OFS="\t" file1 file2
Sam     349.45
Chelsey 536.95
Andrew  402.6
Shane   427.75
Ava     434.5

Be aware that nothing is known on the grade calculation algorithm nor the "possible total" that might be needed to calculate it.
Last edited by RudiC; 02-02-2020 at 04:22 PM..
This User Gave Thanks to RudiC For This Post:
cotilloe
 

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LEARN ABOUT SUNOS

mlib_signalconv_f32_f32

mlib_SignalConv_S16_S16_Sat(3MLIB)			    mediaLib Library Functions				mlib_SignalConv_S16_S16_Sat(3MLIB)

NAME

       mlib_SignalConv_S16_S16_Sat, mlib_SignalConv_S16S_S16S_Sat, mlib_SignalConv_F32_F32, mlib_SignalConv_F32S_F32S - signal convolution

SYNOPSIS

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

       mlib_status mlib_SignalConv_S16_S16_Sat(mlib_s16 *dst, const mlib_s16 *src1, const mlib_s16 *src2, mlib_s32 m, mlib_s32 n);

       mlib_status mlib_SignalConv_S16S_S16S_Sat(mlib_s16 *dst, const mlib_s16 *src1, const mlib_s16 *src2, mlib_s32 m, mlib_s32 n);

       mlib_status mlib_SignalConv_F32_F32(mlib_f32 *dst, const mlib_f32 *src1, const mlib_f32 *src2, mlib_s32 m, mlib_s32 n);

       mlib_status mlib_SignalConv_F32S_F32S(mlib_f32 *dst, const mlib_f32 *src1, const mlib_f32 *src2, mlib_s32 m, mlib_s32 n);

DESCRIPTION

       Each of these functions performs convolution.

       For monaural signals, the following equation is used:

		m-1
       dst[i] = SUM (src1[j] * src2[i - j])  if m <= n
		j=0

		n-1
       dst[i] = SUM (src2[j] * src1[i - j])  if m > n
		j=0

       where i = 0, 1, ..., (m + n - 2).

       For stereo signals, the following equation is used:

		      m-1
       dst[2*i]     = SUM (src1[2*j] * src2[2*(i - j)])
		      j=0

		      m-1
       dst[2*i + 1] = SUM (src1[2*j + 1] * src2[2*(i - j) + 1])
		      j=0

       if m <= n, or

		      n-1
       dst[2*i]     = SUM (src2[2*j] * src1[2*(i - j)])
		      j=0

		      n-1
       dst[2*i + 1] = SUM (src2[2*j + 1] * src1[2*(i - j) + 1])
		      j=0

       if m > n; where i = 0, 1, ..., (m + n - 2).

PARAMETERS

       Each of the functions takes the following arguments:

       dst	       Destination signal array.

       src1	       First source signal array.

       src2	       Second source signal array.

       m	       Number of samples in the first source signal array.

       n	       Number of samples in the second source signal arrays.

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

       attributes(5)

SunOS 5.10							    10 Nov 2004 				mlib_SignalConv_S16_S16_Sat(3MLIB)
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