Login or Register to Ask a Question and Join Our Community

Sponsored Content
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 303043661 by cotilloe on Monday 3rd of February 2020 09:39:02 AM
Old 02-03-2020
I got 575.25 outside of the script. There are 7 Homework assignments, 7 Labs, 7 Quizzes and 1 Final with a total of 100 points possible on each. Then there is the survey worth a possible 5 points.

Knowing the weighted values:
Homework 10%
Labs 30%
Quizzes 40%
Final 15%
Survey 5%

I applied that to the possible total scores, as well
Homework --> 700*0.1 = 70
Labs --> 700 * 0.3 = 210
Quizzes --> 700 * 0.4 = 280
Final --> 100 * 0.15 = 15
Survey --> 5 * 0.05 = 0.25
all weighted percentage values equal 100, so it is good there. so I added the totals 70+210+280+15+.25 = 575.25

I was able to, using the code snippet you provided, divide the totals by the 575.25 and get the final weighted percentile score for each student. I then spent the next several hours trying to get a letter grade assigned to each one based on the percentile score, but had no luck. It currently gives everyone an 'A' no matter what their percent score was, which I am sure a student would like, but not going to work for me...lol.

Very frustrating, trying to learn awk on the fly like this. ... Here is the most current version of the code I have with various comments on why/what is going on:

Code:
awk -F, '
FNR == NR       {WEIGHT[$1] = $3
                 next
                }
FNR == 1        {next
                }
     {SUM[$1] += $4 * WEIGHT[$2]
     per[$1]=SUM[$1]/575.25*100       # gives me the correct weighted final scores for each student
     TOTAL=SUM[$1]/575.25*100       # Assign value to variable cuz I have tried and failed to access it directly from per
     grd[$1]                                            # initializing a new array.. i do not know why. I am just trying things at this point
for (g in grd)                                      # tried without a loop, so now trying in a loop
    if(TOTAL > 97)
    {
       gr="A+"        
    }
    else if (94 < TOTAL <= 97)
    {
       gr="A"                                          # Everyone gets an A which is strange since it is not the first possibility and the student that 
    }	                                                     # actually has an A is not the first record being processed
    else if (90 < TOTAL <= 94)
    {
       gr="A-"        
    }
    else if(87 < TOTAL <= 90)
    {
       gr="B+"        
    }
    else if (84 < TOTAL <= 87)
    {
       gr="B"        
    }
    else if (80 < TOTAL <= 84)
    {
       gr="B-"        
    }
    else if (76 < TOTAL <= 80)
    {
       gr="C+"        
    }
    else if (70 < TOTAL <= 76)
    {
       gr="C"        
    }
    else if (60 < TOTAL <= 70)
    {
       gr="D"        
    }
    else
    {
       gr="E"        
    }
grd[$1]=gr                                          # trying to assign the gr variable to the value of new array... did not work too well
}

END {print "Name\tPercent\tGrade\n" 
           for (p in per)
           printf "%s\t%.2f\t%s\n", p, per[p], grd[$1] }' OFS="\t" file1 data.csv     # have tried grd[p], just the variable gr and doing the calculations inline.

Adding output and noticed that the student I said deserves an A actually deserves an A-....
Output:
Name Percent Grade
Sam 60.75 A
Chelsey 93.34 A
Andrew 69.99 A
Shane 74.36 A
Ava 75.53 A
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Find top N values for field X based on field Y's value

I want to find the top N entries for a certain field based on the values of another field. For example if N=3, we want the 3 best values for each entry: Entry1 ||| 100 Entry1 ||| 95 Entry1 ||| 30 Entry1 ||| 80 Entry1 ||| 50 Entry2 ||| 40 Entry2 ||| 20 Entry2 ||| 10 Entry2 ||| 50... (1 Reply)
Discussion started by: FrancoisCN
1 Replies

2. UNIX for Dummies Questions & Answers

awk - Summing a field based on another field

So, I need to do some summing. I have an Apache log file with the following as a typical line: 127.0.0.1 - frank "GET /apache_pb.gif HTTP/1.0" 200 2326 Now, what I'd like to do is a per-minute sum. So, I can have awk tell me the individual minutes, preserving the dates(since this is a... (7 Replies)
Discussion started by: treesloth
7 Replies

3. Shell Programming and Scripting

Update a field in a file based on condition

Hi i am new to scripting. i have a file file.dat with content as : CONTENT_STORAGE PERCENTAGE FLAG: /storage_01 64% 0 /storage_02 17% 1 I need to update the value of FLAG for a particular CONTENT_STORAGE value I have written the following code #!/bin/sh threshold=20... (1 Reply)
Discussion started by: kichu
1 Replies

4. Shell Programming and Scripting

Help with Awk finding and replacing a field based on a condition

Hi everybody, I'm trying to replace the $98 field with "T" if the last field (108th) is T I've tried awk 'BEGIN{OFS=FS="|"} {if ($108=="T")sub($98,"T"); print}' test.txt but that doesn't do anything also tried awk 'BEGIN{OFS=FS="|"}{ /*T.$/ sub($98,"T")} { print}' test.txt but... (2 Replies)
Discussion started by: jghi123
2 Replies

5. Shell Programming and Scripting

awk to count condition in field

I am trying to confirm the counts from another code and tried the below awk, but the syntax is incorrect. Basically, outputting the counts of each condition in $8. Thank you :) awk '$8==/TYPE=snp/ /TYPE=ins/ /TYPE=del/ {count++} END{print count}'... (6 Replies)
Discussion started by: cmccabe
6 Replies

6. Shell Programming and Scripting

awk to update value in field based on another field

In the tab-delimeted input file below I am trying to use awk to update the value in $2 if TYPE=ins in bold, by adding the value of HRUN= in italics. In the below since in line 1 TYPE=ins the 117282541 value in $2 has 6 added because that is the value of HRUN=. Hopefully the awk is a start but I... (2 Replies)
Discussion started by: cmccabe
2 Replies

7. Shell Programming and Scripting

awk to adjust coordinates in field based on sequential numbers in another field

I am trying to output a tab-delimited result that uses the data from a tab-delimited file to combine and subtract specific lines. If $4 matches in each line then the first matching sequential $6 value is added to $2, unless the value is 1, then the original $2 is used (like in the case of line... (3 Replies)
Discussion started by: cmccabe
3 Replies

8. Shell Programming and Scripting

Perl to update field based on a specific set of rules

In the perl below, which does execute, I am having trouble with the else in Rule 3. The digit in f{8} is extracted and used to update f accordinly along with the value in f. There can be either - * or + before the number that is extracted but the same logic applies, that is if the value is greater... (5 Replies)
Discussion started by: cmccabe
5 Replies

9. Shell Programming and Scripting

awk to change contents of field based on condition in same file

In the awk below I am trying to copy the entire contents of $6 there may be multiple values seperated by a ;, to $8, if $8 is . (lines 1 and 3 are examples). If that condition $8 is not . (line2 is an example) then that line is skipped and printed as is. The awk does execute but prints the output... (3 Replies)
Discussion started by: cmccabe
3 Replies

10. UNIX for Beginners Questions & Answers

Change the field color based on condition in email

Request your help to change the field color based on condition , if it is otherthan 0. using html in unix. Here is my condition for(i=1;i<=NF;i++) { print "<td> "$i"</td> } Please use CODE tags when displaying sample input, output, and code segments. (17 Replies)
Discussion started by: CatchMe
17 Replies

LEARN ABOUT OPENSOLARIS

mlib_signallpcpitchanalyze_s16

mlib_SignalLPCPitchAnalyze_S16(3MLIB)			    mediaLib Library Functions			     mlib_SignalLPCPitchAnalyze_S16(3MLIB)

NAME

       mlib_SignalLPCPitchAnalyze_S16 - perform open-loop pitch analysis

SYNOPSIS

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

       mlib_status mlib_SignalLPCPitchAnalyze_S16(mlib_s32 *pitch,
	    const mlib_s16 *sigwgt, const mlib_s32 *region,
	    mlib_s32 length);

DESCRIPTION

       The mlib_SignalLPCPitchAnalyze_S16() function performs open-loop pitch analysis.

       The open-loop pitch analysis uses perceptual weighted signal and is done with following steps.

       In the first step, three maxima of the correlation

		     N-1
	      R(k) = SUM sw(j) * sw(j-k)
		     j=0

       where N = length, is located for each of the three search regions.

       In the second step, the retained maxima R(Ti), i=0,1,2 are normalized as following.

				R(Ti)
	      Rn(ti) = ---------------------, i=0,1,2
			     N-1	 2
			SQRT(SUM sw(j-Ti) )
			     j=0

       where N = length.

       In the third step, the best open-loop delay Topt is determined as following.

	      Topt = T0
	      if (Rn(t1) >= (0.85 * Rn(Topt))
		   Topt = t1
	      if (Rn(t2) >= (0.85 * Rn(Topt))
		   Topt = t2

       See G.729, G.729A, GSM EFR standards.

PARAMETERS

       The function takes the following arguments:

       pitch	 The speech pitch estimated.

       sigwgt	 The  weighted signal vector with samples in Q15 format. sigwgt points to the current sample of the weighted signal vector, length
		 samples must be availabe after this point, and MAX{region[i],i=0,1,...,5} samples must be available before this point.

       region	 The lower/upper boundaries of the three search regions,  where  region[2*i]  is  the  lower  boundary	of  search  region  i  and
		 region[2*i+1] is the upper boundary of search region i.

       length	 The length of the signal vectors over which the correlation is calculated.

RETURN VALUES

       The function 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	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_SignalLPCPitchAnalyze_F32(3MLIB), attributes(5)

SunOS 5.11							    2 Mar 2007				     mlib_SignalLPCPitchAnalyze_S16(3MLIB)
All times are GMT -4. The time now is 10:08 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy