[LON-CAPA-users] Any way around this?

[Mills, Douglas G]

Thank you Gerd!


On 8/21/12 11:17 AM, "Gerd Kortemeyer" <korte at lite.msu.edu> wrote:

> Hi,
> 
> Yes, you are right, I just tested this. Deep down inside CAPA, the string from
> the Perl-environment is turned into a number before being passed on to
> checking. It's a bug that nobody found in 12 years.
> 
> I would suggest customresponse or even stringresponse to get around this.
> 
> - Gerd.
> 
> On Aug 21, 2012, at 11:54 AM, "Mills, Douglas G" <dmills at illinois.edu> wrote:
> 
>> Ok, but even so the error message quotes the computer's answer as 8e-06 with
>> nothing but 1 sig fig, regardless of how hard I try to get it to recognize
>> that in fact I'm giving it 4 sig figs. What is wanted here is 4 sig figs, so
>> turning it into a range all the way down to 1 sig fig seems like removing
>> the sig fig requirement altogether, no?
>> 
>> 
>> On 8/21/12 10:50 AM, "Gerd Kortemeyer" <korte at lite.msu.edu> wrote:
>> 
>>> Hi,
>>> 
>>> That means the expected answer from the student (and the computer) needs to
>>> have exactly four significant digits. I would turn that into a range.
>>> 
>>> - Gerd.
>>> 
>>> On Aug 21, 2012, at 11:48 AM, "Mills, Douglas G" <dmills at illinois.edu>
>>> wrote:
>>> 
>>>> <responseparam type="tolerance" default="0.5%" name="tol"
>>>> description="Numerical Tolerance" />
>>>> <responseparam name="sig" type="int_range" default="4"
>>>> description="Significant Digits" />
>>>> 
>>>> 
>>>> 
>>>> On 8/21/12 10:43 AM, "Gerd Kortemeyer" <korte at lite.msu.edu> wrote:
>>>> 
>>>>> Hi,
>>>>> 
>>>>> On Aug 21, 2012, at 11:39 AM, "Mills, Douglas G" <dmills at illinois.edu>
>>>>> wrote:
>>>>> 
>>>>>> So <numericalresponse answer="$CB1" format="4s"> ??
>>>>> 
>>>>> Yes.
>>>>> 
>>>>> 
>>>>>> I have that, and have
>>>>>> tried setting the variable both with and without the &format command, but
>>>>>> to
>>>>>> no avail.  8.000e-6, 8*10^-6 and even .000008000 all show up in the error
>>>>>> message as 8e-06 complaining of the computer's answer being wrong.
>>>>> 
>>>>> What do you have the in "significant digits" and "tolerance" response
>>>>> parameters?
>>>>> 
>>>>> - Gerd.
>>>>> 
>>>>> _______________________________________________
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>>>>> LON-CAPA-users at mail.lon-capa.org
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>>>> 
>>>> 
>>>> Doug
>>>> 
>>>> Douglas Mills
>>>> Director of Instructional Technologies
>>>> Department of Chemistry
>>>> University of Illinois
>>>> dmills at illinois.edu
>>>> (217) 244-5739
>>>> 
>>>> 
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>>> 
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>> 
>> 
>> Doug
>> 
>> Douglas Mills
>> Director of Instructional Technologies
>> Department of Chemistry
>> University of Illinois
>> dmills at illinois.edu
>> (217) 244-5739 
>> 
>> 
>> _______________________________________________
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>> LON-CAPA-users at mail.lon-capa.org
>> http://mail.lon-capa.org/mailman/listinfo/lon-capa-users
> 
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Doug

Douglas Mills
Director of Instructional Technologies
Department of Chemistry
University of Illinois
dmills at illinois.edu
(217) 244-5739