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Diff for /capa/capa51/GUITools/quizzer.tcl between versions 1.1 and 1.8

version 1.1, 1999/09/28 21:25:36 version 1.8, 1999/11/17 21:34:40
Line 948  proc createDateDialog { toplevel makedef Line 948  proc createDateDialog { toplevel makedef
     checkbutton $optionsFrame2.response -variable gDates(inhibitresponse) \      checkbutton $optionsFrame2.response -variable gDates(inhibitresponse) \
  -text "Inhibit Correct/Incorrect response \n(normally only for exams/quizzes)"   -text "Inhibit Correct/Incorrect response \n(normally only for exams/quizzes)"
     pack $durationFrame $optionsFrame2.view $optionsFrame2.response -side top      pack $durationFrame $optionsFrame2.view $optionsFrame2.response -side top
     set gDates(viewbetween) 1      set gDates(viewbetween) 0
     set gDates(inhibitresponse) 0      set gDates(inhibitresponse) 0
   
     label $durationFrame.label -text "Duration"      label $durationFrame.label -text "Duration"
Line 1162  proc addDate { listbox } { Line 1162  proc addDate { listbox } {
 ###########################################################  ###########################################################
 proc createDBHeader {} {  proc createDBHeader {} {
     global gNumberParsedText gPrompt gLoadHeaderSet gControlDates \      global gNumberParsedText gPrompt gLoadHeaderSet gControlDates \
     gSetNumberText  gHeaderQCount      gSetNumberText  gHeaderQCount gEnableDiscussion gFile
   
     if { $gNumberParsedText == "" } {      if { $gNumberParsedText == "" } {
  displayError "You must first preview the file before creating the \   displayError "You must first preview the file before creating the \
Line 1182  proc createDBHeader {} { Line 1182  proc createDBHeader {} {
     message $dialog.msg -text "Header Information" -aspect 1000      message $dialog.msg -text "Header Information" -aspect 1000
     set loadFrame [frame $dialog.loadFrame -borderwidth 4 -relief sunken]      set loadFrame [frame $dialog.loadFrame -borderwidth 4 -relief sunken]
     set infoFrame [frame $dialog.infoFrame -borderwidth 4 -relief sunken]      set infoFrame [frame $dialog.infoFrame -borderwidth 4 -relief sunken]
       set optionFrame [frame $dialog.options]
     set buttonFrame [frame $dialog.buttons -bd 10]      set buttonFrame [frame $dialog.buttons -bd 10]
     pack $dialog.msg $loadFrame $infoFrame $buttonFrame -side top -fill x      pack $dialog.msg $loadFrame $infoFrame $optionFrame $buttonFrame -side top -fill x
   
     set legendFrame [frame $infoFrame.legendFrame]      set legendFrame [frame $infoFrame.legendFrame]
     set listFrame [frame $infoFrame.listFrame]      set listFrame [frame $infoFrame.listFrame]
Line 1212  proc createDBHeader {} { Line 1213  proc createDBHeader {} {
     button $loadFrame.load -text "load" -command "loadDates $listbox"      button $loadFrame.load -text "load" -command "loadDates $listbox"
     pack $loadFrame.msg $loadFrame.entry $loadFrame.load -side left      pack $loadFrame.msg $loadFrame.entry $loadFrame.load -side left
   
       if { [file exists [file join [file dirname $gFile] discussion $gSetNumberText]] } {
    set gEnableDiscussion 1
       } else {
    set gEnableDiscussion 0
       }
       checkbutton $optionFrame.discuss -text "Enable Discussion Forum" \
    -variable gEnableDiscussion
       pack $optionFrame.discuss
   
     button $buttonFrame.ok -text Set -command { set gPrompt(ok) 1 } \      button $buttonFrame.ok -text Set -command { set gPrompt(ok) 1 } \
     -underline 0       -underline 0 
     button $buttonFrame.cancel -text Cancel -command { set gPrompt(ok) 0 } \      button $buttonFrame.cancel -text Cancel -command { set gPrompt(ok) 0 } \
Line 1241  proc createDBHeader {} { Line 1251  proc createDBHeader {} {
     capaGrab release $dialog      capaGrab release $dialog
     destroy $dialog      destroy $dialog
     if {$gPrompt(ok) == 1 } {      if {$gPrompt(ok) == 1 } {
    updateDiscussion
  eval updateHeader [ eval concat $gControlDates ]   eval updateHeader [ eval concat $gControlDates ]
     }      }
           
Line 1249  proc createDBHeader {} { Line 1260  proc createDBHeader {} {
 }  }
   
 ###########################################################  ###########################################################
   # updateDiscussion
   ###########################################################
   ###########################################################
   ###########################################################
   proc updateDiscussion {} {
       global gFile gSetNumberText gEnableDiscussion
       set dir [file dirname $gFile]
       set disDir [file join $dir discussion $gSetNumberText]
       set logDir [file join $dir discussion logs]
       if { $gEnableDiscussion } {
    if { ![file exists $disDir] } {
       if { [file exists $disDir.unavailable] } {
    exec mv $disDir.unavailable $disDir
       } else {
    file mkdir $disDir
    file attributes $disDir -permissions 0777
       }
    }
    if { ![file exists $logDir] } {
       file mkdir [file join $dir discussion logs]
       file attributes [file join $dir discussion logs] -permissions 0777
    }
       } else { 
    if { [file exists $disDir] } { exec mv $disDir $disDir.unavailable } 
       }
   }
   
   ###########################################################
 # allFieldsComplete2   # allFieldsComplete2 
 ###########################################################  ###########################################################
 ###########################################################  ###########################################################
 ###########################################################  ###########################################################
 proc allFieldsComplete2 {} {  proc allFieldsComplete2 {} {
     global gLoadHeaderSet gControlDates      global gLoadHeaderSet gControlDates 
           
     if { [string length $gOpenDate] != 8 } {      if { [string length $gOpenDate] != 8 } {
  return 0   return 0
Line 2189  proc createPreviewWindow {} { Line 2228  proc createPreviewWindow {} {
 }  }
   
 ###########################################################  ###########################################################
   # openError
   ###########################################################
   ###########################################################
   ###########################################################
   proc openError { file line type} {
       global gRefLine gLineNumberGoto gTextWindow
       if { $type == 2 } {
    set gLineNumberGoto $line
    gotoLine
    capaRaise [winfo toplevel $gTextWindow]
       } else {
    if {[set num [openReferenceFile $file]]} {
       update idletasks
       set gRefLine($num) $line
       gotoRefLine $num
    }
       }
   }
   
   ###########################################################
   # showParseErrors
 ###########################################################  ###########################################################
 ###########################################################  ###########################################################
 ###########################################################  ###########################################################
 proc showParseErrors {} {  proc showParseErrors {} {
     global gParseErrorsText gWindowMenu      global gParseErrorsText gWindowMenu gUniqueNumber gCapaConfig
   
     set parseErrors [getParseErrors]      set parseErrors [getParseErrors]
           
Line 2243  proc showParseErrors {} { Line 2303  proc showParseErrors {} {
     $gParseErrorsText delete 0.0 end      $gParseErrorsText delete 0.0 end
     capaRaise .parseErrors      capaRaise .parseErrors
  }   }
    foreach line [split $parseErrors "\n"] {
  $gParseErrorsText insert end $parseErrors      set tag 0
       if { [regexp -indices {File:.+->(.+), Line ([0-9]+): ERROR:} $line result file linenum]} {
    set tag 1
       } else {
    if { [regexp -indices {File:(.+), Line ([0-9]+): ERROR:} $line result file linenum]} {
       set tag 2
    }
       }
       if { $tag } {
    set tagnum [incr gUniqueNumber]
    set linenum [eval [list string range $line] $linenum]
    set filename [eval [list string range $line] $file]
    set i [expr [lindex [split [$gParseErrorsText index end] .] 0] - 1]
       }
       $gParseErrorsText insert end "$line\n"
       if { $tag } {
    $gParseErrorsText tag add error.$tagnum $i.[lindex $file 0] $i.[expr [lindex $file 1] + 1]
    $gParseErrorsText tag configure error.$tagnum -foreground $gCapaConfig(IMP_color)
    $gParseErrorsText tag bind error.$tagnum <Double-ButtonPress> \
       "eval openError $filename $linenum $tag"
       }
    }
     } else {      } else {
  if { [winfo exists .parseErrors] } { $gParseErrorsText delete 0.0 end }   if { [winfo exists .parseErrors] } { $gParseErrorsText delete 0.0 end }
     }      }
Line 2381  proc rereadCapaConfig { } { Line 2462  proc rereadCapaConfig { } {
  displayError "Invalid capa.config file"    displayError "Invalid capa.config file" 
  set gCapaConfig(printer_option) $printer_option   set gCapaConfig(printer_option) $printer_option
     }       } 
       setDefaultValues
     updateColors      updateColors
 }  }
   
Line 2399  proc pickCapaConfig { } { Line 2481  proc pickCapaConfig { } {
  cd [file dirname $file]   cd [file dirname $file]
  set error [parseCapaConfig]   set error [parseCapaConfig]
  if { $error != "OK" } { displayError "Invalid capa.config file"; cd $oldDir }    if { $error != "OK" } { displayError "Invalid capa.config file"; cd $oldDir } 
    setDefaultValues
     }       } 
 }  }
   
   proc setDefaultValues {} {
       global gProbVal gTryVal gHintVal gCapaConfig
       catch {set gProbVal $gCapaConfig(default_prob_val)}
       catch {set gTryVal $gCapaConfig(default_try_val)}
       catch {set gHintVal $gCapaConfig(default_hint_val)}
   }
   
 ###########################################################  ###########################################################
 # openDocument  # openDocument
 ###########################################################  ###########################################################
 ###########################################################  ###########################################################
 ###########################################################  ###########################################################
 proc openDocument {} {  proc openDocument {} {
     global gFile gTextWindow gSetNumberText gPrefs gChanged gQuizTemp gUndo      global gFile gTextWindow gSetNumberText gPrefs gChanged gQuizTemp gUndo 
   
     if { $gChanged } { if { [askToSave 0 0] == "Cancel" } { return } }      if { $gChanged } { if { [askToSave 0 0] == "Cancel" } { return } }
     if { ![catch {set gTextWindow}] } {       if { ![catch {set gTextWindow}] } { 
Line 2478  proc openDocument {} { Line 2568  proc openDocument {} {
  set gQuizTemp true   set gQuizTemp true
         return          return
     }      }
       setDefaultValues
   
     createEditingWindow 0      createEditingWindow 0
     $gTextWindow delete 0.0 end      $gTextWindow delete 0.0 end
     $gTextWindow insert 0.0 [read $fileId [file size $gFile]]      $gTextWindow insert 0.0 [read $fileId [file size $gFile]]
Line 2664  proc isReferenceFileOpen { file } { Line 2755  proc isReferenceFileOpen { file } {
     set entryfile [lindex $entry 1]      set entryfile [lindex $entry 1]
  }   }
 # puts $entryfile  # puts $entryfile
  if { [catch {file stat $entryfile a1}] } { puts skipped;continue }   if { [catch {file stat $entryfile a1}] } { continue }
  file stat $file a2   file stat $file a2
 # puts "$a2(ino) == $a1(ino)"  # puts "$a2(ino) == $a1(ino)"
  if { $a2(ino) == $a1(ino) } {   if { $a2(ino) == $a1(ino) } {
Line 2721  proc openReferenceFile { {file ""} {new Line 2812  proc openReferenceFile { {file ""} {new
       -title "Select the proper file" \        -title "Select the proper file" \
       -initialdir "$gDir(reference)" ]        -initialdir "$gDir(reference)" ]
  event generate .main <ButtonRelease-1>   event generate .main <ButtonRelease-1>
  if { $file == "" } { return }   if { $file == "" } { return 0 }
  set gDir(reference) [file dirname $file]   set gDir(reference) [file dirname $file]
   
  if { [file isdirectory $file] } {   if { [file isdirectory $file] } {
     displayError "You attempted to open $file which is a directory not a file."      displayError "You attempted to open $file which is a directory not a file."
     return      return 0
  }   }
     } else {      } else {
  if { !$new } {   if { !$new } {
     if { [set window [isReferenceFileOpen $file] ] != "" } {       if { [set window [isReferenceFileOpen $file] ] != "" } { 
    set num [lindex [split [lindex [split $window .] 1] e] end]
  capaRaise $window   capaRaise $window
  return    return $num
     }      }
     # specifically opening the capa.config file      # specifically opening the capa.config file
     if { $file == "capa.config" } {      if { $file == "capa.config" } {
Line 2743  proc openReferenceFile { {file ""} {new Line 2835  proc openReferenceFile { {file ""} {new
       { {All Files} {"*"} } } \        { {All Files} {"*"} } } \
   -title "Select the proper file" \    -title "Select the proper file" \
   -initialdir "$gDir(reference)" ]    -initialdir "$gDir(reference)" ]
     if { $file == "" } { return }      if { $file == "" } { return 0 }
  } else {   } else {
     set file [file join [file dirname $gFile] capa.config]      set file [file join [file dirname $gFile] capa.config]
  }   }
     } else {      } else {
  if { ![file isfile $file] && ![file readable $file] } {   if { ![file isfile $file] && ![file readable $file] } {
     displayError "Unable to find $file"      displayError "Unable to find $file"
     return      return 0
  }   }
  if { [file isdirectory $file] } {   if { [file isdirectory $file] } {
     displayError "You attempted to open $file which is a directory not a file."      displayError "You attempted to open $file which is a directory not a file."
     return      return 0
  }   }
     }      }
  }   }
Line 2872  proc openReferenceFile { {file ""} {new Line 2964  proc openReferenceFile { {file ""} {new
     set gRefChanged($num) 0      set gRefChanged($num) 0
     set gRefClosed($num) 0      set gRefClosed($num) 0
     addFindList $num      addFindList $num
       return $num
 }  }
   
 ###########################################################  ###########################################################
Line 2928  proc trackChanges { procName num } { Line 3021  proc trackChanges { procName num } {
 ###########################################################  ###########################################################
 ###########################################################  ###########################################################
 proc undo { num } {  proc undo { num } {
     global gUndo gRefText gTextWindow      global gUndo gRefText gTextWindow gChanged gRefChanged
     if { $gUndo($num.cur) == 0 } { return }      if { $gUndo($num.cur) == 0 } { return }
     set undoInfo $gUndo($num.$gUndo($num.cur))      set undoInfo $gUndo($num.$gUndo($num.cur))
     if { [regexp {.*[\"/].*} $undoInfo] } {      if { [regexp {.*[\"/].*} $undoInfo] } {
Line 2939  proc undo { num } { Line 3032  proc undo { num } {
     }      }
     if { $num == 0 } {      if { $num == 0 } {
  if {[catch {eval ".$gTextWindow $gUndo($num.$gUndo($num.cur))"}]} { return }   if {[catch {eval ".$gTextWindow $gUndo($num.$gUndo($num.cur))"}]} { return }
    set gChanged 1
     } else {      } else {
  if {[catch {eval ".$gRefText($num) $gUndo($num.$gUndo($num.cur))"}]} { return }   if {[catch {eval ".$gRefText($num) $gUndo($num.$gUndo($num.cur))"}]} { return }
    set gRefChanged($num) 1
     }      }
     incr gUndo($num.cur) -1      incr gUndo($num.cur) -1
 }  }
Line 3220  proc createStopButton {} { Line 3315  proc createStopButton {} {
     if {[winfo exists .stopbutton]} {destroy .stopbutton}      if {[winfo exists .stopbutton]} {destroy .stopbutton}
     set top [toplevel .stopbutton]      set top [toplevel .stopbutton]
     button $top.stop -text "Stop Parser" -command "stopParser"      button $top.stop -text "Stop Parser" -command "stopParser"
     label $top.status -textvariable gStopStatus -width 35      label $top.status -textvariable gStopStatus -width 35 -anchor w
     pack $top.stop $top.status      pack $top.stop $top.status
     set gStopStatus ""      set gStopStatus ""
     grab $top      grab $top
Line 3558  proc printWindow {} { Line 3653  proc printWindow {} {
  -value "printWholeClass" -variable gPrintSelection(type)    -value "printWholeClass" -variable gPrintSelection(type) 
     pack $wholeClassFrame.wholeClass -side left      pack $wholeClassFrame.wholeClass -side left
           
     message $studentNumber.msg -text "Student Number: "  -aspect 10000  i   message $studentNumber.msg -text "Student Number: "  -aspect 10000
     entry $studentNumber.entry -textvariable gPrintSelection(studentNumber) -width 9 \      entry $studentNumber.entry -textvariable gPrintSelection(studentNumber) -width 9 \
  -validate key -validatecommand "limitEntry %W 9 any %P"   -validate key -validatecommand "limitEntry %W 9 any %P"
     pack $studentNumber.msg $studentNumber.entry -side left      pack $studentNumber.msg $studentNumber.entry -side left
Line 3696  proc createCreateDviWin {} { Line 3791  proc createCreateDviWin {} {
 #          gStopPrinting -  #          gStopPrinting -
 # Files: quiztemp.ps - file containg info to print (removed)  # Files: quiztemp.ps - file containg info to print (removed)
 ###########################################################  ###########################################################
 proc printBody { lprCommand { showCompletionMessage 1 } } {  proc printBodon(section
   ionMessage 1 } } {
     global gCapaConfig gStopPrinting gDonePrinting      global gCapaConfig gStopPrinting gDonePrinting
   
     set errorMsg ""      set errorMsg ""
Line 3975  proc printSection { { lprCommand "" } } Line 4071  proc printSection { { lprCommand "" } }
  default { set type "-T" }   default { set type "-T" }
     }      }
   
       set prSection [string trimleft $gPrintSelection(section) 0]
   
     if { [set gStopPrinting [expr 2 == [runLatex \      if { [set gStopPrinting [expr 2 == [runLatex \
     "echo [pwd] | $gCapaConfig(qzparse_command) \      "echo [pwd] | $gCapaConfig(qzparse_command) \
     -sec $gPrintSelection(section) -set $set \      -sec $prSection -set $set \
     -d [pwd] -c [pwd] $type " gCreateDviText] ] ] } {      -d [pwd] -c [pwd] $type " gCreateDviText] ] ] } {
  for {set i $start} { $i <= $end} { incr i } {   for {set i $start} { $i <= $end} { incr i } {
     exec rm -f section$gPrintSelection(section)-set$i.tex       exec rm -f section$prSection-set$i.tex 
  }   }
  if {$showStopping} {   if {$showStopping} {
     displayMessage "Printing has been stopped."      displayMessage "Printing has been stopped."
Line 3997  proc printSection { { lprCommand "" } } Line 4095  proc printSection { { lprCommand "" } }
     }      }
   
     for { set i $start} { $i <= $end } { incr i } {      for { set i $start} { $i <= $end } { incr i } {
  if { ! [file exists section$gPrintSelection(section)-set$i.tex] } {   if { ! [file exists section$prSection-set$i.tex] } {
     if {$showStopping} {      if {$showStopping} {
  displayError "The qzparse command: $gCapaConfig(qzparse_command), was unable to produce the expected output. Printing stopped"   displayError "The qzparse command: $gCapaConfig(qzparse_command), was unable to produce the expected output. Printing stopped"
  set gStopPrinting 0   set gStopPrinting 0
Line 4006  proc printSection { { lprCommand "" } } Line 4104  proc printSection { { lprCommand "" } }
     return 2      return 2
  }   }
   
  exec mv section$gPrintSelection(section)-set$i.tex quiztemp.tex   exec mv section$prSection-set$i.tex quiztemp.tex
  exec /bin/rm -f quiztemp.dvi    exec /bin/rm -f quiztemp.dvi 
   
  $gCreateDviText insert end "$gCapaConfig(latex_command)\n"   $gCreateDviText insert end "$gCapaConfig(latex_command)\n"
Line 4424  proc analyzeRandom { } { Line 4522  proc analyzeRandom { } {
 }  }
   
 ###########################################################  ###########################################################
   # analyzeStrings
   ###########################################################
   ###########################################################
   ###########################################################
   proc analyzeStrings { prob window create} {
       global gAnalyze
   
       if { ![winfo exists $window.analyzestrings] } { if {!$create} { return } }
       if { ![catch {set setWin [toplevel $window.analyzestrings]}] } {
    set msgFrame [frame $setWin.msgFrame]
    set valFrame [frame $setWin.valFrame]
    set buttonFrame [frame $setWin.buttonFrame]
    pack $msgFrame $valFrame $buttonFrame
    pack configure $valFrame -expand 1 -fill both
   
    message $msgFrame.msg -text "Correct Answers" -aspect 3000
    pack $msgFrame.msg
   
    set maxWidth 1
    foreach choice $gAnalyze($prob.ans) {
       if {[string length $choice]>$maxWidth} {set maxWidth [string length $choice]}
    }
    set maxStringWidth $maxWidth
    incr maxWidth 6
   
    set selectMode none
    listbox $valFrame.val -width [expr $maxWidth + 2] \
       -yscrollcommand "$valFrame.scroll set" -selectmode $selectMode
    scrollbar $valFrame.scroll -command "$valFrame.val yview"
    pack $valFrame.val $valFrame.scroll -side left
    pack configure $valFrame.val -expand 1 -fill both 
    pack configure $valFrame.scroll -expand 0 -fill y
    button $buttonFrame.cancel -text "Dismiss" -command "destroy $setWin"
    pack $buttonFrame.cancel
       } else {
    set maxWidth 1
    set valFrame $window.analyzestrings.valFrame
    $valFrame.val delete 0 end
    foreach choice $gAnalyze($prob.ans) {
       if {[string length $choice]>$maxWidth} {set maxWidth [string length $choice]}
    }
    set maxStringWidth $maxWidth
    incr maxWidth 6
       }
       set lastchoice [lindex $gAnalyze($gAnalyze(prob).ans) 0]
       set num 1
       foreach choice [lsort $gAnalyze($gAnalyze(prob).ans)] {    
    if { $lastchoice != $choice } {
       $valFrame.val insert end \
    "[format %-[set maxStringWidth]s $lastchoice] [format %5d $num]"
       set lastchoice $choice
       set num 1
    } else {
       incr num
    }
       }
       $valFrame.val insert end \
    "[format %-[set maxStringWidth]s $lastchoice] [format %5d $num]"
   }
   
   ###########################################################
 # analyzeUpdate  # analyzeUpdate
 ###########################################################  ###########################################################
 ###########################################################  ###########################################################
Line 4444  proc analyzeUpdate { {newProbNumber 0} } Line 4603  proc analyzeUpdate { {newProbNumber 0} }
     set gAnalyze(highnum) [set high [lindex $gAnalyze($gAnalyze(prob).ans) end]]      set gAnalyze(highnum) [set high [lindex $gAnalyze($gAnalyze(prob).ans) end]]
     set gAnalyze(numuniq) [llength [lunique $gAnalyze($gAnalyze(prob).ans)]]      set gAnalyze(numuniq) [llength [lunique $gAnalyze($gAnalyze(prob).ans)]]
 #don't draw anything if the answers aren't numbers  #don't draw anything if the answers aren't numbers
     if { [catch {expr $low + 1}]} { update idletask;return }      if { [catch {expr $low + 1}]} { 
    catch {destroy $c.button}
    update idletask
    button $c.button -text "List of strings" -command \
       "analyzeStrings $gAnalyze(prob) $c 1"
    $c create window [expr $gAnalyze(canvaswidth)/2.0] 40 -window $c.button
    analyzeStrings $gAnalyze(prob) $c 0
    return 
       }
   
     $c create line 25 50 [expr $gAnalyze(canvaswidth) - 25] 50      $c create line 25 50 [expr $gAnalyze(canvaswidth) - 25] 50
     set diff [expr double($high-$low)]      set diff [expr double($high-$low)]
     if { $diff == 0 } {      if { $diff == 0 } {
  set center [expr $gAnalyze(canvaswidth)/2.0]   set center [expr $gAnalyze(canvaswidth)/2.0]
  $c create oval [expr $center - 2] 48 [expr $center + 2] 52 -fill green   $c create rectangle [expr $center - 2] 48 [expr $center + 2] 52 -fill green
  update idletasks   update idletasks
  return   return
     }      }
Line 4467  proc analyzeUpdate { {newProbNumber 0} } Line 4634  proc analyzeUpdate { {newProbNumber 0} }
  set center [expr $center+25]   set center [expr $center+25]
  $c create rectangle [expr $center - 1] 40 [expr $center + 1] 60   $c create rectangle [expr $center - 1] 40 [expr $center + 1] 60
     }      }
       set lastpoint [lindex $gAnalyze($gAnalyze(prob).ans) 0]
       set num 0
     foreach point $gAnalyze($gAnalyze(prob).ans) {          foreach point $gAnalyze($gAnalyze(prob).ans) {    
  set center [expr ($gAnalyze(canvaswidth)-50)*(($point-$low)/$diff)]   if { $lastpoint != $point } {
  set center [expr $center+25]      set center [expr ($gAnalyze(canvaswidth)-50)*(($lastpoint-$low)/$diff)]
  $c create oval [expr $center - 2] 48 [expr $center + 2] 52 -fill green      set center [expr $center+25]
       $c create rectangle [expr $center - 2] [expr 48-$num] \
    [expr $center + 2] [expr 52+$num] -fill green
       set lastpoint $point
       set num 0
    } else {
       incr num
    }
     }      }
       set center [expr ($gAnalyze(canvaswidth)-50)*(($lastpoint-$low)/$diff)]
       set center [expr $center+25]
       $c create rectangle [expr $center - 2] [expr 48-$num] \
    [expr $center + 2] [expr 52+$num] -fill green
           
     update idletasks      update idletasks
 }  }
Removed from v.1.1  
changed lines
  Added in v.1.8

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