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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 303043636 by cotilloe on Sunday 2nd of February 2020 03:46:24 PM
Old 02-02-2020
Wow, thanks. I did not know how that worked. So basically, it works like CSS sort of, as long as I mention the file name at the end, it will look in those files for the input?

Just want to be sure I understand fully.

--- Post updated at 09:46 PM ---

Quote:
Originally Posted by RudiC
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.
I kind of figured it out from looking again but am still confused on a couple of things:

the first line is basically telling the script to get input from first file, creating and storing the array, weight[] which holds the values as such: weight[Homework:0.10, Lab :0.30, Quiz:0.40, Final :0.15, Survey:0.05]

How does it/why does it become weight[$2] though?
 

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LEARN ABOUT NETBSD

slapo-valsort

SLAPO-VALSORT(5)						File Formats Manual						  SLAPO-VALSORT(5)

NAME

       slapo-valsort - Value Sorting overlay to slapd

SYNOPSIS

       /etc/ldap/slapd.conf

DESCRIPTION

       The  Value Sorting overlay can be used with a backend database to sort the values of specific multi-valued attributes within a subtree. The
       sorting occurs whenever the attributes are returned in a search response.

       Sorting can be specified in ascending or descending order, using either numeric or alphanumeric sort methods.  Additionally,  a	"weighted"
       sort  can  be specified, which uses a numeric weight prepended to the attribute values.	The weighted sort is always performed in ascending
       order, but may be combined with the other methods for values that all have equal weights. The weight is specified by prepending an  integer
       weight  {<weight>} in front of each value of the attribute for which weighted sorting is desired. This weighting factor is stripped off and
       never returned in search results.

CONFIGURATION

       These slapd.conf options apply to the Value Sorting overlay.  They should appear after the overlay directive.

       valsort-attr <attribute> <baseDN> (<sort-method> | weighted [<sort-method>])
	      Configure a sorting method for the specified attribute in the subtree rooted at baseDN.  The sort-method may be one of alpha-ascend,
	      alpha-descend, numeric-ascend, or numeric-descend.  If the special weighted method is specified, a secondary sort-method may also be
	      specified. It is an error to specify an alphanumeric sort-method for an attribute with Integer or NumericString syntax, and it is an
	      error to specify a numeric sort-method for an attribute with a syntax other than Integer or NumericString.

EXAMPLES

	    database bdb
	    suffix dc=example,dc=com
	    ...
	    overlay valsort
	    valsort-attr member ou=groups,dc=example,dc=com alpha-ascend

FILES

       /etc/ldap/slapd.conf
	      default slapd configuration file

SEE ALSO

       slapd.conf(5), slapd-config(5).

ACKNOWLEDGEMENTS

       This module was written in 2005 by Howard Chu of Symas Corporation. The work was sponsored by Stanford University.

OpenLDAP							    2012/04/23							  SLAPO-VALSORT(5)
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