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Diff for /loncom/html/adm/help/tex/Custom_Response_Problems.tex between versions 1.4 and 1.5

version 1.4, 2007/05/10 21:04:02 version 1.5, 2009/05/24 13:08:35
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 Custom Response is a way to have a problem graded based on an algorithm. The use of this response type is  Custom Response is a way to have a problem graded based on an algorithm. The use of this response type is
 generally discouraged, since the responses will not be analyzable by the LON-CAPA statistics tools.  generally discouraged, since the responses will not be analyzable by the LON-CAPA statistics tools.
   
 The student answer is stored in the  For a single textfield, the student's answer will be in a variable \$submission. If the Custom Response has multiple textfields, the answers will be in an array
 variable \$submission, and needs to be evaluated by Perl code inside the <answer>-tag. Custom Response needs to return a standard LON-CAPA. The most common response are:  reference, and can be accessed as \$\$submission[0], \$\$submission[1], etc.
   
   The student answer needs to be evaluated by Perl code inside the <answer>-tag. Custom Response needs to return a standard LON-CAPA. The most common response are:
 \begin{itemize}  \begin{itemize}
 \item EXACT\_ANS: return if solved exactly correctly  \item EXACT\_ANS: return if solved exactly correctly
 \item APPROX\_ANS: return if solved approximately  \item APPROX\_ANS: return if solved approximately
 \item INCORRECT: return if not correct, uses up a try  \item INCORRECT: return if not correct, uses up a try
   \item ASSIGNED\_SCORE: partial credit (also return the credit factor, e.g. return(ASSIGNED\_SCORE,0.3);)
 \item SIG\_FAIL, NO\_UNIT, EXTRA\_ANSWER, MISSING\_ANSWER, BAD\_FORMULA,   \item SIG\_FAIL, NO\_UNIT, EXTRA\_ANSWER, MISSING\_ANSWER, BAD\_FORMULA, 
 WANTED\_NUMERIC: return if not correct for different reasons, does not use up a try  WANTED\_NUMERIC: return if not correct for different reasons, does not use up a try
 \end{itemize}  \end{itemize}
Line 42  Full list of possible return codes: Line 45  Full list of possible return codes:
 \item WANTED\_NUMERIC: expected a numeric answer and didn't get one  \item WANTED\_NUMERIC: expected a numeric answer and didn't get one
 \item SIG\_FAIL: incorrect number of Significant Figures  \item SIG\_FAIL: incorrect number of Significant Figures
 \item UNIT\_FAIL: incorrect unit  \item UNIT\_FAIL: incorrect unit
 \item UNIT\_NOTNEEDED: Submitted a unit when one shouldn't  \item UNIT\_NOTNEEDED: submitted a unit when one shouldn't
 \item UNIT\_INVALID\_INSTRUCTOR: the unit provided by the author of the problem is unparsable  \item UNIT\_INVALID\_INSTRUCTOR: the unit provided by the author of the problem is unparsable
 \item UNIT\_INVALID\_STUDENT: the unit provided by the student is unparasable  \item UNIT\_INVALID\_STUDENT: the unit provided by the student is unparasable
 \item UNIT\_IRRECONCIBLE: the unit from the student and the instructor are of different types  \item UNIT\_IRRECONCIBLE: the unit from the student and the instructor are of different types
Line 53  Full list of possible return codes: Line 56  Full list of possible return codes:
 \item DRAFT: submission only stored  \item DRAFT: submission only stored
 \item MISORDERED\_RANK: student submitted a poorly order rank response  \item MISORDERED\_RANK: student submitted a poorly order rank response
 \item ERROR: unable to get a grade  \item ERROR: unable to get a grade
 \item ASSIGNED\_SCORE: there is a resource.partid.responseid.awarded the real awarded should be set to the average of the individual awards  \item ASSIGNED\_SCORE: partial credit; the customresponse needs to return the award followed by the partial credit factor  
 \item TOO\_LONG: answer submission to CAPA engine longer than 500 characters  \item TOO\_LONG: answer submission was deemed too long
 \item INVALID\_FILETYPE: student tried to upload a file that was of an extension that was not specifically allowed   \item INVALID\_FILETYPE: student tried to upload a file that was of an extension that was not specifically allowed 
 \item COMMA\_FAIL: answer requires the use of comma grouping and it wasn't provided or was incorrect  \item COMMA\_FAIL: answer requires the use of comma grouping and it wasn't provided or was incorrect
   
 \end{itemize}  
   
   \end{itemize}
Removed from v.1.4  
changed lines
  Added in v.1.5

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