Combined Availability and eTCL demo example calculator, numerical analysis edit
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gold Here is some eTCL starter code for combined availability in calculator shell.A hospital carries three ambulances on a 24 hour basis. Ambulance a has an availability of 0.8 and a use of availability of 0.6, giving 24*.8*0.6, 11.52 hours. Ambulance b has an availability of 0.8 and a use of availability of .7, giving 24*0.8*0.7, 13.44 hours. Ambulance c has an availability of 0.8 and a use of availability of 0.5, giving 24*0.8*0.5, 9.6 hours. The combined use for the three ambulances is a)11.52 + b)13.44 + c)9.6 = 34.56 total hours.
# 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 1
printed in
tcl wiki format
quantity
value
comment, if any
1:
testcase_number
0.800 :
Availability (a)
0.599 :
Use of Availability (a)
0.800 :
Availability (b)
0.699 :
Use of Availability (b)
0.800 :
Availability (c)
0.5 :
Use of Availability (c)
24.0 :
optional: hours per interval (24,5*8,3*8,55*40, usually 24 )
11.520 :
hours (a)
13.440 :
hours (b)
9.600 :
hours (c)
11.520 :
average hours per item (a+b+c)/3
34.560 :
answer: total hours
Testcase 2
table 2
printed in
tcl wiki format
quantity
value
comment, if any
2:
testcase_number
0.75 :
Availability (a)
0.599 :
Use of Availability (a)
0.699:
Availability (b)
0.699 :
Use of Availability (b)
0.599 :
Availability (c)
0.699 :
Use of Availability (c)
24.0 :
optional: hours per interval (24,5*8,3*8,55*40, usually 24 )
10.799 :
hours (a)
11.759 :
hours (b)
10.079 :
hours (c)
10.879 :
average hours per item (a+b+c)/3
32.639 :
answer: total hours
Testcase 3
table 3
printed in
tcl wiki format
quantity
value
comment, if any
3:
testcase_number
0.800 :
Availability (a)
0.5 :
Use of Availability (a)
0.900 :
Availability (b)
0.5 :
Use of Availability (b)
0.900 :
Availability (c)
0.5 :
Use of Availability (c)
24.0 :
optional: hours per interval (24,5*8,3*8,55*40, usually 24 )
9.600 :
hours (a)
10.800 :
hours (b)
10.800 :
hours (c)
10.4 :
average hours per item (a+b+c)/3
31.200 :
answer: total hours
Screenshots Section
figure 1.
References:
Taking a Weighted Average, Dr Math, mathforum.org/dr.math, dated 03/20/2003
google <Weighted Average, Dr Math>, mathforum.org/dr.math
Using Weighted Criteria to Make Decisions, Dr Math>, mathforum.org/dr.math, dated 07/18/2008
# pretty print from autoindent and ased editor
# Combined Availability 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 {{} { Availability (a) :} }
lappend names { Use of Availability (a) :}
lappend names { Availability (b) : }
lappend names { Use of Availability (b) : }
lappend names { Availability (c) :}
lappend names { Use of Availability (c) : }
lappend names { optional: hours per interval ( usually 24 )}
lappend names { answers: total hours :}
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 Combined Availability
from TCL WIKI,
written on eTCL "
tk_messageBox -title "About" -message $msg }
proc calculate { } {
global answer2
global side1 side2 side3 side4 side5
global side6 side7 side8
global a_hours b_hours c_hours average_hours
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 total_hours 1.
set hours_rating 24.
set hours_rating $side7
set a_hours [* $hours_rating $side1 $side2 ]
set b_hours [* $hours_rating $side3 $side4 ]
set c_hours [* $hours_rating $side5 $side6 ]
set total_hours [+ $a_hours $b_hours $c_hours ]
set average_hours [/ [+ $a_hours $b_hours $c_hours ] 3. ]
set side8 $total_hours
}
proc fillup {aa bb cc dd ee ff gg hh} {
.frame.entry1 insert 0 "$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_hours b_hours c_hours average_hours
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 :|Availability (a) | |&"
puts "&| $side2 :|Use of Availability (a)| |& "
puts "&| $side3 :|Availability (b) | |& "
puts "&| $side4 :|Use of Availability (b)| |&"
puts "&| $side5 :|Availability (c) | |&"
puts "&| $side6 :|Use of Availability (c) | |&"
puts "&| $side7 :|optional: hours per interval (24,5*8,3*8,55*40, usually 24 ) | |&"
puts "&| $a_hours :|hours (a) | |&"
puts "&| $b_hours :|hours (b) | |&"
puts "&| $c_hours :|hours (c) | |&"
puts "&| $average_hours :|average hours per item (a+b+c)/3 | |&"
puts "&| $side8 :|answer: total hours | |&"
}
frame .buttons -bg aquamarine4
::ttk::button .calculator -text "Solve" -command { calculate }
::ttk::button .test2 -text "Testcase1" -command {clearx;fillup 0.8 0.6 0.8 0.7 0.8 0.5 24. 36.4}
::ttk::button .test3 -text "Testcase2" -command {clearx;fillup 0.75 0.6 0.7 0.7 0.6 0.7 24. 32.6 }
::ttk::button .test4 -text "Testcase3" -command {clearx;fillup 0.8 0.5 0.9 .5 .9 .5 24. 32.2 }
::ttk::button .clearallx -text clear -command {clearx }
::ttk::button .about -text about -command {about}
::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 . "Combined Availability 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 |&"
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