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    1: \label{Domain_Configuration_Scantron_Format}
    2: Where bubblesheet exams are used in a course, the format of data in the
    3: file generated from the processing of bubbled-in bubblesheets may
    4: vary between institutions. The format definitions available when performing
    5: bubblesheet grading in LON-CAPA were originally listed in the scantronformat.tab
    6: file, stored in /home/httpd/lonTabs, which might have been modified
    7: locally on each server. 
    8: 
    9: Starting with LON-CAPA 2.7, bubblesheet format information is read from
   10: either a custom.tab file, or a default.tab file both of which belong
   11: to the special domain configuration user (\$dom-domainconfig, where
   12: \$dom is the name of the domain) and which are automatically published
   13: into resource space. 
   14: 
   15: For LON-CAPA installations older than 2.7, when the primary library
   16: server for the domain has been updated, a Domain Coordinator should
   17: display the ``Bubblesheet format file'' configuration
   18: page via ``Domain Configuration''. The first time
   19: this page is displayed, a default.tab (a copy of the standard LON-CAPA
   20: scantronformat.tab file), and a custom.tab (if the scantronform.tab
   21: file currently on the server differs from the standard file) will
   22: be copied and published. Thereafter any changes to bubblesheet format
   23: files to be used for grading bubblesheet exams in courses from the domain
   24: will be made via the Domain Configuration menu. Any scantronform.tab
   25: files in /home/httpd/lonTab directories on servers in the domain will
   26: no longer be used.
   27: 
   28: The settings available via ``Bubblesheet format file'' 
   29: support upload of a new custom file, or deletion of an existing custom
   30: file (in which case grading will default to use of the default.tab
   31: file). An uploaded bubblesheet format file contains one or more lines
   32: of colon-separated values for the parameters in the following order:
   33: 
   34: \begin{quote}
   35: {\scriptsize name:description:CODEtype:CODEstart:CODElength:IDstart:IDlength:Qstart:Qlength:Qoff:Qon:PaperID:PaperIDlength:}
   36: {\scriptsize FirstName:FirstNamelength:LastName:LastNamelength} 
   37: \end{quote}
   38: 
   39: \begin{enumerate}
   40: \item \emph{name} is the internal identifier used within LON-CAPA
   41: \item \emph{description} is the text displayed for each option in
   42: the {}``Format of data file'' dropdown in the Bubblesheet grading
   43: screen.  The user will choose the appropriate format for the bubblesheet 
   44: file currently being used for bubblesheet grading.
   45: \item \emph{CODEtype} can be either 'none' 'letter' 'number' 
   46: \item \emph{CODEstart}: (only matters if a CODE exists) column in the line where the CODE starts
   47: \item \emph{CODElength}: length of the CODE
   48: \item \emph{IDstart}: column where the student ID starts
   49: \item \emph{IDlength}: length of the student ID
   50: \item \emph{Qstart}: column where the information from the bubbled 'questions' start  
   51: \item \emph{Qlength} is the number of characters in the raw data used to record the student's bubbled answer for each row on the bubblesheet.
   52: 
   53: If the raw data indicate bubble position by a letter or a number (e.g., A = first bubble or 1 = first bubble etc.) then the number of characters would be 1 (assuming 10 bubbles or less for the number case).  If however, bubble position is indicated by position of the Qon (bubbled) character, then each bubble row might have 10 characters (one for each of the 10 possible positions with Qon at the position bubbled and Qoff elsewhere, (e.g. if Qon = 1, Qoff = .  the portion of a student's record for a single bubble row might be:  ...1......  indicating position 4 was the one bubbled.
   54: \item \emph{Qoff} is the character used to indicate an unfilled bubble, this is commonly a single blank space.
   55: \item \emph{Qon} is the character used in the raw data generated by the bubblesheet scanner to indicate a filled-in bubble.
   56: 
   57: \emph{Qon} can be either:
   58: \begin{itemize}
   59: \item the symbol that says a bubble has been selected, or
   60: \item 'letter' (for when the selected letter appears), or 
   61: \item 'number' for when a number indicating the selected letter appears 
   62: \end{itemize}
   63: \item \emph{PaperID}: if the scanning process generates a unique number for each sheet scanned the column that this ID number starts in
   64: \item \emph{PaperIDlength}: number of columns that comprise the unique ID number for the sheet of paper
   65: \item \emph{FirstName}: column that the first name starts in
   66: \item \emph{FirstNamelength}: number of columns that the first name spans
   67: \item \emph{LastName}: column that the last name starts in
   68: \item \emph{LastNamelength}: number of columns that the last name spans
   69: \end{enumerate}
   70: As an example, below are four different format lines: the first two
   71: were used at MSU prior to 2006; the last two have been used since
   72: then.
   73: 
   74: \begin{itemize}
   75: \item msunocode:MSU without any CODE:none:0:0:57:9:77:10: :1:5:5:51:1:41:10 
   76: \item msucode:MSU with CODE in separate location:letter:69:6:57:9:77:10:
   77: :1:5:5:51:1:41:10 
   78: \item msucodelet:MSU with CODE in separate location (letter format):-1:69:6:57:9:77:1:
   79: :letter:5:5:51:1:41:10 
   80: \item msucodenum:MSU with CODE in separate location (number format):-1:69:6:57:9:77:1:
   81: :number:5:5:51:1:41:10
   82: \end{itemize}