Version 53 of Drake Intelligent Life Equation Slot Calculator Example
Updated 2011-05-25 17:11:40 by goldDrake Intelligent Life Equation Slot Calculator Example
This page is under development. Comments are welcome, but please load any comments in the comments section at the middle of the page. Thanks,gold
gold Here is an eTCL script on to estimate drake equation. For the push buttons, the reccomended procedure is push testcase and fill frame, change entries , push solve, and then push report. Report allows copy and paste from console, but takes away from computer "efficiency".
In planning any software, there is a need to develop testcases.
Testcase 1.
| quantity | number | units |
|---|---|---|
| star formation | 10. | rate per year |
| stars with planets | .5 | stars |
| potential life | 2. | |
| actual life | 1. | |
| fraction develop civilization | .01 | none |
| fraction technology | .01 | none |
| years available | 10000. | years |
| number of civilizations equal 10.* .5 * 2. * 1. * .01 * .01 * 10000. | ||
| answer: 10. | civilizations |
Screenshots Section
Comments Section
Please place any comments here, Thanks.
What is your purpose in binding the motion event on your main window to execute the wm title command. I.e., this line:
bind . <Motion> {wm title . "Drake Equation Calculator "}The result of that binding is that every time you move the mouse, the "wm title" subcommand is called repeatedly. To set the window title, you just need to call "wm title . title" once, not on every event update upon mouse pointer motion.
Also, why do you define the procs pi, interlinear, pol, errorx, and height5 when you do not appear to use them anywhere in the code presented? In examples, having extra bits defined that are not used adds noise that a reader has to expend effort upon only to later learn that he/she could have ignored that part. Keeping the example focused upon only that which is needed for just the example, and nothing more, makes for a more informative, and educational, example.
gold changes: pulled procs pi,interlinear,pol,errorx,height5. and changed to wm . "title". Former idea was that user could use interpolate routine in the punched console. Conjecture below was that in a namespace version, subroutines would be available, but not all called from the namespace.
In that case, you might consider placing them into a namespace (i.e. ::gold::) and placing that common code on your main "gold" page. Then each other example page can refer to that one common location for the common items. Of course you would want to modify the examples to both load the ::gold definitions file from the gold page, and to make use of the procs therein instead of defining each individually.
References:
- http://en.wikipedia.org/wiki/Drake_equation
- http://www.astrodigital.org/astronomy/drake_equation.html
- expr
- Importing expr functions
- Category Package
Appendix TCL programs and scripts
* Pretty Print Version
# Pretty print version from autoindent
# and ased editor
# program of drake equation
# written on Windowws XP on eTCL
# working under TCL version 8.5.6 and eTCL 1.0.1
# gold on TCL WIKI , 24aug2010
frame .frame -relief flat -bg aquamarine4
pack .frame -side top -fill y -anchor center
set names {{} {star formation /yr:} {fraction w/ planets:} {poss life :} {actual life:} {civiliation develop:}
{detectable signs:} {length years:} { civilizations:} }
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 Drake Equation.
from TCL WIKI,
written on eTCL "
tk_messageBox -title "About" -message $msg
}
proc intelligent5 { xx1 } {
global side1 side2 side3
global side4 side5 side6 side7 side8
set side8 [ expr { 1*$side1*$side2*$side3*$side4*$side5*$side6*$side7 } ]
return $side8
}
proc calculate { } {
global colorwarning
global colorback
global answer2 answer3
global side1 side2 side3 side4 side5 side6 side7 side8
set answer2 5
set answer2 [ intelligent5 $side8 ]
set side8 $answer2
}
proc fillup {aa bb cc dd ee ff gg hh} {
.frame.entry1 insert 0 "$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 side6 side7 side8
console show;
puts "
puts " $side1 star formation /yr: "
puts " $side2 fraction w/ planets: "
puts " $side3 poss life : "
puts " $side4 actual life: "
puts " $side5 civiliation develop: "
puts " $side6 detectable signs: "
puts " $side7 length years: "
puts " $side1 civilizations: "
puts " $side2 "
puts " $side3 "
puts " $side4 "
puts " $side5 "
puts " $side6 "
puts " $side7 "
puts " $side8 "
puts "answer $side8 "
}
frame .buttons -bg aquamarine4
::ttk::button .calculator -text "Solve" -command { calculate }
::ttk::button .test2 -text "Testcase1" -command {clearx;fillup 10. .5 2. 1. .01 .01 10000. 10.}
::ttk::button .test3 -text "Testcase2" -command {clearx;fillup 10. .5 2. 1. .01 .01 10000. 10. }
::ttk::button .test4 -text "Testcase3" -command {clearx;fillup 10. .5 2. 1. .01 .01 10000. 10. }
::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 . "Drake Equation Calculator "Context and starter code for namespace version
aspect /excerpted/ many of your examples seem to have a common presentation, with a similar GUI consisting of:
a set of labelled boxes for user input a "Solve" button which calls your main logic with the inputs as arguments a few "Testcase" buttons to illustrate examples and test the code "About", "Clear" and "Exit" buttons
I for one would love to see the GUI side of the code factored out into a common framework which each example could share. That way the wiki page for each calculator example could be focussed on the logic, looking something more like this:
namespace eval linear_interp {
set name "Linear Interpolation Calculator"
set inputs {"First X value" x1 "First Y value" y1 "Second X value" x2 "Second y value" y2 "Solve for x" xx}
set about "This is Gold's linear interpolation calculator, © 2011
.. with some more information on how it works and is used, etc"
set testcases {
{10. 10. 200. 50. 123.}
# etc
}
proc calculate {x1 x2 y1 y2 xx} {
return [expr {some magic here to calculate the result}]
}
}
load generic_calculator_gui.tcl
generic_calculator_gui linear_interpAs a secondary advantage, your calculator could then without modification be used in other contexts, such as a command line or web tool or automatically invoking all the test cases. Of course, the GUI can also be easily re-skinned to the user's preferences without impacting the main code.
I hope you don't find the above overly critical or discouraging, that's certainly not my intention -- but I do think keeping the above points in mind will make your pages more appealing to other wiki'ers and encourage collaboration .. which is what we're all here for, after all!
gold test on calculator in namespace. The original program used global statements to pass data among subroutines. Some routines are working in canvas, clear,fillup,exit,load new testcase and solve with button. With number and all of variables so specified upfront, not sure how to float the calculations into the shell, other than to put an statement if not zero, answer is expr{ side1*side2...}
package provide calculatorslot 1.0
namespace eval slot {
variable colorhigh
variable colorback
variable answer2
variable answer3
variable side1
variable side2
variable side3
variable side4
variable side5
variable side6
variable side7
variable side8
namespace export clearx
namespace export fillup
# drake equation
# written on Windows XP on eTCL
# working under TCL version 8.5.6 and eTCL 1.0.1
# gold on TCL WIKI , 24aug2010
proc initdisplay {} {
variable titlex
variable colorhigh
variable colorback
variable quantitylist
frame .frame -relief flat -bg $slot::colorback
pack .frame -side top -fill y -anchor center
set names $slot::quantitylist
foreach i {1 2 3 4 5 6 7 8} {
label .frame.label$i -text [lindex $names $i] -anchor e
entry .frame.entry$i -width 35 -textvariable slot::side$i
grid .frame.label$i .frame.entry$i -sticky ew -pady 2 -padx 1
}
frame .buttons -bg $slot::colorback
::ttk::button .calculator -text "Solve" -command { slot::calculate }
::ttk::button .test2 -text "Testcase1" -command {slot::clearx;slot::fillup 10. .5 2. 1. .01 .01 10000. 10.}
::ttk::button .test3 -text "Testcase2" -command {slot::clearx;slot::fillup 10. .5 2. 1. .01 .01 10000. 10. }
::ttk::button .test4 -text "Testcase3" -command {slot::clearx;slot::fillup 10. .5 2. 1. .01 .01 10000. 10. }
::ttk::button .clearallx -text clear -command {slot::clearx }
::ttk::button .about -text about -command {slot::about}
::ttk::button .cons -text report -command { slot::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 $slot::colorback -highlightcolor $slot::colorhigh -relief raised -border 30
wm title . $slot::titlex
}
proc about {} {
variable msgx
set msg $slot::msgx
tk_messageBox -title "About" -message $msg
}
proc intelligent5 { xx1 } {
variable side1
variable side2
variable side3
variable side4
variable side5
variable side6
variable side7
variable side8
set side8 [ expr { 1*$side1*$side2*$side3*$side4*$side5*$side6*$side7 } ]
return $side8
}
proc calculate { } {
variable answer2
variable answer3
variable side1
variable side2
variable side3
variable side4
variable side5
variable side6
variable side7
variable side8
set side8 8
set answer2 5
set answer2 [ intelligent5 $side8 ]
set side8 $answer2
}
proc fillup {aa bb cc dd ee ff gg hh} {
.frame.entry1 insert 0 "$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 {} {
variable colorwarning
variable colorback
variable answer2
variable answer3
variable side1
variable side2
variable side3
variable side4
variable side5
variable side6
variable side7
variable side8
console show;
puts " "
puts " $side1 star formation /yr: "
puts " $side2 fraction w/ planets: "
puts " $side3 poss life : "
puts " $side4 actual life: "
puts " $side5 civiliation develop: "
puts " $side6 detectable signs: "
puts " $side7 length years: "
puts " $side8 civilizations: "
puts " $side2 "
puts " $side3 "
puts " $side4 "
puts " $side5 "
puts " $side6 "
puts " $side7 "
puts " $side8 "
puts "answer is $side8 "
}
}
#-------------------------- end namespace
proc slotshell {} {
set slot::titlex "Drake Equation Calculator in Namespace"
set slot::colorback aquamarine4
set slot::colorhigh brown
set slot::msgx "Drake Calculator in Namespace.
from TCL WIKI,
written on eTCL "
set slot::quantitylist {{} {star formation /yr:} {fraction w/ planets:} {poss life :} {actual life:} {civiliation develop:}
{detectable signs:} {length years:} { civilizations:} }
if {0} { planned >>>> here
new slot::testcases {10. 10. 200. 50. 123....}
magic xproc calculate {x1 x2 y1 y2 xx ...}
return [expr {some magic here to calculate the result}]
}
namespace import slot::*
slot::initdisplay
set xcalls [clearx]
set xcalls [fillup 7. .5 2. 1. .01 .01 10000. 10.]
puts " clear&fillup called, push button solve"
puts " program calculated data loaded from shell"
}
slotshell