Updated 2016-05-20 18:50:24 by gold

Sumerian Surveyor Area Formula and eTCL Slot Calculator Demo Example, numerical analysis edit

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gold Here is some eTCL starter code for calculating the Sumerian surveyor formula for a rectangle and 4 sided figure. Most of the testcases involve replicas or models, using assumptions and rules of thumb.

The Sumerian surveyor formula is ( (L1+L2)/2)* (W1+W2)/2) or (L1+L2 +W1+W2)/4 for a rectangle and 4 sided figure. The first testcase was all sides equal 1 meter. For the formula (L1+L2 +W1+W2)/4, substituting, area equals ( 1+1 +1+1)/4, results in 1 square meter. The perimeter is (L1+L2 +W1+W2), substituting, perimeter = ( 1+1 +1+1), 4 meters.

The second testcase was L1=2,L2=2,W1=4,and W2=4. For the formula (L1+L2 +W1+W2)/4, substituting, area equals ( 2+2 +4+4)/4, 12/4, 3 square meters. The perimeter was 2+2 +4+4, 12 meters.

The third testcase was L1=3,L2=3,W1=5,and W2=5. For the formula (L1+L2 +W1+W2)/4, substituting, area equals ( 3+3 +5+5)/4, 16/4, 4 square meters. The perimeter was 3+3 +5+5, 16 meters.

Pseudocode and Equations

    # following statements can be pasted into eTCL console
    set testcase_1  [ eval expr  ( 1+1 +1+1)/4 ]  # 1 square meters
    set testcase_2  [ eval expr  ( 2+2 +4+4)/4 ]  # 3 square meters
    set testcase_3  [ eval expr  ( 3+3 +5+5)/4 ]  # 4 square meters
    set testcase_1_perimeter   [ eval expr  ( 1+1 +1+1) ]  # 4 square meters
    set testcase_2_perimeter   [ eval expr  ( 2+2 +4+4) ]  # 12 square meters
    set testcase_3_perimeter   [ eval expr ( 3+3 +5+5)  ]  # 16 square meters

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
testcase number:1
1.0 :length L1 meters meters
1.0 :length L2 meters
1.0 :width W1 meters
1.0 :width W2 meters
1.0 :average length meters
1.0 :average width meters
4.0 :perimeter meters
1.0 :surface area square meters


Testcase 2

table 2printed in tcl wiki format
quantity value comment, if any
testcase number:2
2.0 :length L1 meters meters
2.0 :length L2 meters
4.0 :width W1 meters
4.0 :width W2 meters
2.0 :average length meters
4.0 :average width meters
12.0 :perimeter meters
3.0 :surface area square meters


Testcase 3

table 3printed in tcl wiki format
quantity value comment, if any
testcase number:3
3.0 :length L1 meters meters
3.0 :length L2 meters
5.0 :width W1 meters
5.0 :width W2 meters
3.0 :average length meters
5.0 :average width meters
16.0 :perimeter meters
4.0 :surface area square meters


Screenshots Section

figure 1.


References:

  • Eleanor Robson, Mesopotamian Mathematics, 2100-1600 BC (Oxford, 1999)
  • Robson, Eleanor, Mesopotamian Mathematics, 2100-1600BCE,Oxford 1999
  • Horowitz, Wayne, Late Babylonian Tablet CBS1766, Hebrew University
  • Steele, J.M. Celestial Measurement in Bablylonian Astronomy,Annals of Science,2007
  • Mathematical Cuneiform Texts, Neugebauer and A. Sachs, American Oriental Society, 1945
  • Friberg 1987-90:555,Firberg on tablet BM15285
  • Eclipse Prediction and the Length of the Saros in
  • Babylonian Astronomy LIS BRACK-BERNSEN∗AND JOHN M. STEELE
  • Celestial Measurement in Babylonian Astronomy, J. M. STEELE, University of Durham
  • Amazing Traces of a Babylonian Origin in Greek Mathematics, Jöran Friberg and Joachim Marzahn
  • The area and the side i added: some old Babylonian geometry, duncan j. Melville
  • Sumerian Circular Segment Coefficients and Calculator Demo Example
  • Sumerian Coefficients in the Pottery Factory and Calculator Demo Example
  • Sumerian Pottery Vessel & Clay Mass and eTCL Slot Calculator Demo Example , numerical analysis
  • Mathematics hidden behind the two coefficients of Babylonian geometry, kazuo muroi
  • Especially oven/kiln problem in YBC7997, area of ring annulus complements bullseye figure.
  • Sumerian Barge & Cargo Calculator and eTCL Slot Calculator Demo Example, numerical analysis
  • Sumerian Coefficients at the Weavers Factory and eTCL Slot Calculator Demo Example
  • Sumerian Construction Rates and eTCL Slot Calculator Demo Example
  • Sumerian Workcrew & Payroll and eTCL Slot Calculator Demo Example, numerical analysis
  • The design of Babylonian waterclocks : Astronomical and experimental evidence,Steele

Appendix Code edit

appendix TCL programs and scripts

        # pretty print from autoindent and ased editor
        # Sumerian Surveyor Formula calculator
        # written on Windows XP on eTCL
        # working under TCL version 8.5.6 and eTCL 1.0.1
        # gold on TCL WIKI, 15may2016
        package require Tk
        namespace path {::tcl::mathop ::tcl::mathfunc}
        frame .frame -relief flat -bg aquamarine4
        pack .frame -side top -fill y -anchor center
        set names {{} {length L1 meters :} }
        lappend names {length L2 meters :}
        lappend names {width W1 meters: }
        lappend names {width W2 meters :}
        lappend names {answers: average length meters:}
        lappend names {average width meters: }
        lappend names {surface area square meters: }
        lappend names {surface area square meters :}
        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 Sumerian Surveyor 
            from TCL WIKI,
            written on eTCL "
            tk_messageBox -title "About" -message $msg } 
       proc pi {} {expr acos(-1)}       
       proc calculate {     } {
            global answer2
            global side1 side2 side3 side4 side5
            global side6 side7 side8
            global testcase_number
            global average_length average_width total_surface_area 
            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. ]
            set length1 $side1  
            set length2 $side2
            set width1 $side3 
            set width2 $side4 
            set average_length [/ [+ $length1 $length2 ] 2. ]
            set average_width [/ [+  $width1 $width2 ] 2. ]
            set total_surface_area [/ [+ $length1 $length2 $width1 $width2 ] 4. ]
            set perimeter [+ $length1 $length2 $width1 $width2 ] 
            set side5 $average_length
            set side6 $average_width
            set side7 $perimeter
            set side8 $total_surface_area
                    }
        proc fillup {aa bb cc dd ee ff gg hh} {
            .frame.entry1 insert 0 "$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 testcase_number
            global average_length average_width total_surface_area
            console show;
            puts "%|table $testcase_number|printed in| tcl wiki format|% "
            puts "&| quantity| value| comment, if any|& "
            puts "&| testcase number:|$testcase_number | |&"
            puts "&| $side1 :|length L1 meters meters |   |&"
            puts "&| $side2 :|length L2 meters | |& "
            puts "&| $side3 :|width W1 meters| |& "
            puts "&| $side4 :|width W2 meters| |&"
            puts "&| $side5 :|average length meters | |&"
            puts "&| $side6 :|average width meters |  |&"
            puts "&| $side7 :|perimeter meters|  |&"
            puts "&| $side8 :|surface area square meters|  |&" 
            }
        frame .buttons -bg aquamarine4
        ::ttk::button .calculator -text "Solve" -command { calculate   }
        ::ttk::button .test2 -text "Testcase1" -command {clearx;fillup 1.0 1.0 1.0 1.0  1.0 1.0 1.0 1.0}
        ::ttk::button .test3 -text "Testcase2" -command {clearx;fillup 2. 2. 4.0 4.0   4.0  2.0 3.0 3.0 }
        ::ttk::button .test4 -text "Testcase3" -command {clearx;fillup 3. 3. 5.0 5.0   4.0 2.0  4.0 4.0 }
        ::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 . "Sumerian Surveyor Area Formula 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   |&"  

gold This page is copyrighted under the TCL/TK license terms, this license.

Comments Section edit

Please place any comments here, Thanks.