Updated 2017-02-28 21:25:48 by gold

## Weighted Decision and eTCL demo example calculator, numerical analysis edit

This page is under development. Comments are welcome, but please load any comments in the comments section at the bottom of the page. Please include your wiki MONIKER in your comment with the same courtesy that I will give you. Its very hard to reply intelligibly without some background of the correspondent. Thanks,gold

gold Here is some eTCL starter code for weighted decision in calculator shell.

A piano teacher rates three students based on attendence and skills on a half and half basis. Student a has an attendence of 22.0 and a skill score of 53.0 , giving 0.50*22.0+ 0.50*53.0, 37.5 weighted score. Student b has an attendence of 46.0 and a skill score of 56.0 , giving 0.50*46.0+ 0.50*56.0, 51.0 weighted score. Student c has an attendence of 54.0 and a skill score of 27, giving 0.50*54.0+ 0.50*27.0, 40.5 weighted score. The highest rating was max < a)37.5 b)51.0 c)40.5 >= 51 max rating of weighted scores.

## Pseudocode Section edit

```       # using pseudocode
# possible problem instances,
initialize algorithm_result = 1.
check algorithm
f(solution) =? initial product
check_sum = a+b+c+d+e = original real estate
set answers and printout with resulting values
pseudocode: need test cases > small,medium, giant
pseudocode: need testcases within range of expected operation.
pseudocode: are there any cases too small or large to be solved?```

### Testcases Section

In planning any software, it is advisable to gather a number of testcases to check the results of the program. The math for the testcases can be checked by pasting statements in the TCL console. Aside from the TCL calculator display, when one presses the report button on the calculator, one will have console show access to the capacity functions (subroutines).

#### Testcase 1

table 1printed in tcl wiki format
quantity value comment, if any
1:testcase_number
22.0 :Attendence score (a)
53.0 :Skills score (a)
46.0 :Attendence score (b)
56.0 :Skills score (b)
54.0 :Attendence score (c)
27.0 :Skills score (c)
0.5 :optional: factor usually 0.50
37.5 :score (a)
51.0 :score (b)
40.5 :score (c)
43.0 :average score per item (a+b+c)/3
51.0 :answer: highest score (max fx)

#### Testcase 2

table 2printed in tcl wiki format
quantity value comment, if any
2:testcase_number
33.0 :Attendence score (a)
54.0 :Skills score (a)
42.0 :Attendence score (b)
50.0 :Skills score (b)
59.0 :Attendence score (c)
23.0 :Skills score (c)
0.5 :optional: factor usually 0.50
43.5 :score (a)
46.0 :score (b)
41.0 :score (c)
43.5 :average score per item (a+b+c)/3
46.0 :answer: highest score (max fx)

#### Testcase 3

table 3printed in tcl wiki format
quantity value comment, if any
3:testcase_number
25.0 :Attendence score (a)
50.0 :Skills score (a)
45.0 :Attendence score (b)
50.0 :Skills score (b)
64.0 :Attendence score (c)
25.0 :Skills score (c)
0.5 :optional: factor usually 0.50
37.5 :score (a)
47.5 :score (b)
44.5 :score (c)
43.166 :average score per item (a+b+c)/3
47.5 :answer: highest score (max fx)

## Appendix Code edit

### appendix TCL programs and scripts

```        # pretty print from autoindent and ased editor
# Weighted Decision calculator
# written on Windows XP on eTCL
# working under TCL version 8.5.6 and 1.0.1
# gold on TCL WIKI, 25feb2017
package require Tk
package require math::numtheory
namespace path {::tcl::mathop ::tcl::mathfunc math::numtheory }
set tcl_precision 17
frame .frame -relief flat -bg aquamarine4
pack .frame -side top -fill y -anchor center
set names {{} { Attendence score (a) :} }
lappend names { Skills score (a) :}
lappend names { Attendence score (b) : }
lappend names { Skills score (b) : }
lappend names { Attendence score (c) :}
lappend names { Skills score (c) : }
lappend names { optional: factor usually 0.5  }
lappend names { answers: highest score (max fx)  :}
foreach i {1 2 3 4 5 6 7 8} {
label .frame.label\$i -text [lindex \$names \$i] -anchor e
entry .frame.entry\$i -width 35 -textvariable side\$i
grid .frame.label\$i .frame.entry\$i -sticky ew -pady 2 -padx 1 }
proc about {} {
set msg "Calculator for Weighted Decision
from TCL WIKI,
written on eTCL "
tk_messageBox -title "About" -message \$msg }
proc calculate {     } {
global side1 side2 side3 side4 side5
global side6 side7 side8
global a_score b_score c_score average_score
global testcase_number
incr testcase_number
set side1 [* \$side1 1. ]
set side2 [* \$side2 1. ]
set side3 [* \$side3 1. ]
set side4 [* \$side4 1. ]
set side5 [* \$side5 1. ]
set side6 [* \$side6 1. ]
set side7 [* \$side7 1. ]
set side8 [* \$side8 1. ]
# initialize placeholder answer
set maximum_score_rating 1.
set score_rating 0.5
set score_rating \$side7
set a_score [+ [* \$score_rating \$side1 ] [* \$score_rating \$side2 ] ]
set b_score [+ [* \$score_rating \$side3 ] [* \$score_rating \$side4 ] ]
set c_score [+ [* \$score_rating \$side5 ] [* \$score_rating \$side6 ] ]
set average_score [/ [+ \$a_score \$b_score \$c_score ] 3. ]
set maximum_score_rating [max \$a_score \$b_score \$c_score ]
set side8 \$maximum_score_rating
}
proc fillup {aa bb cc dd ee ff gg hh} {
.frame.entry1 insert 0 "\$aa"
.frame.entry2 insert 0 "\$bb"
.frame.entry3 insert 0 "\$cc"
.frame.entry4 insert 0 "\$dd"
.frame.entry5 insert 0 "\$ee"
.frame.entry6 insert 0 "\$ff"
.frame.entry7 insert 0 "\$gg"
.frame.entry8 insert 0 "\$hh"
}
proc clearx {} {
foreach i {1 2 3 4 5 6 7 8 } {
.frame.entry\$i delete 0 end } }
proc reportx {} {
global side1 side2 side3 side4 side5
global side6 side7 side8
global a_score b_score c_score average_score
global testcase_number
console show;
puts "%|table \$testcase_number|printed in| tcl wiki format|% "
puts "&| quantity| value| comment, if any|& "
puts "&| \$testcase_number:|testcase_number | |& "
puts "&| \$side1 :|Attendence score (a)   |   |&"
puts "&| \$side2 :|Skills score (a)| |& "
puts "&| \$side3 :|Attendence score (b) | |& "
puts "&| \$side4 :|Skills score (b)| |&"
puts "&| \$side5 :|Attendence score (c) | |&"
puts "&| \$side6 :|Skills score (c) |  |&"
puts "&| \$side7 :|optional: factor usually 0.50  |  |&"
puts "&| \$a_score :|score (a) |  |&"
puts "&| \$b_score :|score (b) |  |&"
puts "&| \$c_score :|score (c) |  |&"
puts "&| \$average_score :|average score per item (a+b+c)/3 |  |&"
puts "&| \$side8 :|answer: highest score (max fx) |  |&"
}
frame .buttons -bg aquamarine4
::ttk::button .calculator -text "Solve" -command { calculate   }
::ttk::button .test2 -text "Testcase1" -command {clearx;fillup 22.  53.   46. 56.  54.  27. 0.5 51.0}
::ttk::button .test3 -text "Testcase2" -command {clearx;fillup 33.  54.  42.  50.  59.  23. .5 46.0 }
::ttk::button .test4 -text "Testcase3" -command {clearx;fillup 25. 50. 45. 50. 64.  25. 0.5 47.5 }
::ttk::button .clearallx -text clear -command {clearx }
::ttk::button .cons -text report -command { reportx }
::ttk::button .exit -text exit -command {exit}
pack .calculator  -in .buttons -side top -padx 10 -pady 5
pack  .clearallx .cons .about .exit .test4 .test3 .test2   -side bottom -in .buttons
grid .frame .buttons -sticky ns -pady {0 10}
. configure -background aquamarine4 -highlightcolor brown -relief raised -border 30
wm title . "Weighted Decision Calculator"   ```

### Pushbutton Operation

For the push buttons, the recommended procedure is push testcase and fill frame, change first three entries etc, push solve, and then push report. Report allows copy and paste from console.

For testcases in a computer session, the eTCL calculator increments a new testcase number internally, eg. TC(1), TC(2) , TC(3) , TC(N). The testcase number is internal to the calculator and will not be printed until the report button is pushed for the current result numbers. The current result numbers will be cleared on the next solve button. The command { calculate; reportx } or { calculate ; reportx; clearx } can be added or changed to report automatically. Another wrinkle would be to print out the current text, delimiters, and numbers in a TCL wiki style table as
```  puts " %| testcase \$testcase_number | value| units |comment |%"
puts " &| volume| \$volume| cubic meters |based on length \$side1 and width \$side2   |&"  ```