[QTI] Rounding outcome variables

[R.Bacon at surrey.ac.uk]

Hi Niall,
 
I fear you are right - I have found no other way setting a precision.
 
Dick.

________________________________

From: ims-qti-bounces at lists.ucles.org.uk on behalf of Niall Barr
Sent: Tue 29/07/2008 16:36
To: IMS Question &Test Interoperability
Subject: [QTI] Rounding outcome variables


Hi all,
 
I'm trying to fix the (very broken) Moodle QTIv2 item export, so that it generates valid QTI items that behave exactly the same as the Moodle items. One thing Moodle does is round scores to 2 decimal places, so that a score made by adding three parts each with a value of 0.33333 becomes 1.
 
Is there a neat way of doinf this, or do I need to do something like this at the end of responseProcessing?
 
<setOutcomeValue identifier="SCORE">

  <divide>

    <round>

      <product>

        <variable identifier="SCORE"/>

        <baseValue baseType="float">100</baseValue>

       </product> 

      </round>

    <baseValue baseType="float">100</baseValue>

  </divide>

</setOutcomeValue> 

 

(Unfortunatly this doesn't work in either of the item players I'm using - bits are unimplemented in APIS (though it should only take an hour or so to fix that) and R2Q2 doesn't seem to calculate <product> correctly.)

 

Niall 

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