aimmath-developers — Development related messages

[Aimmath-developers] changes

[Neil S. <N.P...@sh...>]

Dear All,

I have just committed a large batch of changes to the develop_2_1 branch.
This is really a bit premature, buy I am going on holiday for the next
two weeks and I wanted to leave Gustav et al with something to work with.
In particular, many things have not been adequately tested (please help
with this!) and the documentation is not up to date.

There are two large scale changes.

(1) I have implemented multipart questions, using a syntax similar (but
    not identical) to that in the Gent version of AIM.  There is a sample
    at the end of this message, and I have updated the question format
    documentation to explain how it works.  I have not yet implemented
    hints and optional subquestions, but I think that would be a relatively
    easy next step.

(2) I have changed the user interface for students, to allow them to focus
    on an individual question.  This should improve response times quite
    substantially.  However, I have not updated the student help page yet.

(3) The maple part of AIM now imposes time limits on many things such as
    initializing a question, constructing the solution, or marking an
    answer.  All time limits default to 2 seconds, but there is a
    new timelimit>/tl> flag allowing you to specify a different limit
    for a particular question.

Here are a couple of more technical things:

(4) As a first step towards integrating AIM with Moodle or other VLE's,
    I have made AIM mark up its output in a way that can more easily be
    parsed by other programs.  This is mostly achieved by using <div> and
    <span> tags.  For example, question 7.2 now comes wrapped in
    <div class='question' id='question7.2'> ... </div>, and the solution
    comes wrapped in <div class='solution'> ... </div>.  I also made some
    changes to move closer to strict compliance with the XHTML standard,
    eg replacing <br> by <br /> everywhere.  This will be useful if and
    when we move to using MathML.

(5) I have made some changes to the object oriented programming framework,
    to make it fit better with the Maple debugger.  In particular, the
    procedures used to perform methods, which were previously anonymous,
    now have names: for example, the 'Show' method for
`aim/Question/Instance`
    objects is called `aim/Question/Instance!Show`, and this name is
    reported in error messages, and can be passed to debugger functions such
    as stopat().

Some smaller changes:

(6) There is a facility to make a list of all messages that might need to
    be translated for internationalization.

(7) There is a postprompt>/pp> flag, for putting some text directly after
    the input box in a text question.

(8) The trylast.mpl file has disappeared; it is replaced by the trylast()
    function which is now defined explicitly in Console.mpl

There are probably some more things that I have forgotten for the moment.

Here is a sample multipart question:

name> subtraction
t> Here are some questions about subtraction
h> n := rnd(5..10);
sq>
t> What is @2*n@ - @n@?
av> x
a> n
esq>
sq>
t> Here are some subsubquestions
sq>
h> m := rnd(11..20);
t> What is @n@ - @m@?
s> [proc(ans)
     `aim/SetAnswerNote`(sprintf("x = %A\n<br>\ny = %A\n<br>\n",x,y));
     `aim/Test`(ans,n-m);
    end,
    n-m]
esq>
sq>
t> What is @n@ - 2?
a> n-2
esq>
esq>
end>



Neil

[Aimmath-developers] gif files are ascii

[Gustav W D. <gu...@ma...>]

When you update to the latest version of branch develop_2_1 you will notice
that the .gif files that Greg committed will be handled as ascii files. I
have now updated the cvswrappers file so that SourceForge knows that .gif,
.exe, and .zip files are binary. Again there may be a delay before this
change takes effect. Sorry for not having thought of this when setting up
the CVS repository.

Gustav

[Aimmath-developers] Trig package added to develop_2_1

[Greg G. <gr...@ma...>]

Dear all,

I've just added changes and new files for my Trig package that I first
made mention of about 6 months ago on the Jiscmail list.

Briefly ...

aim/Trig.mpl ... based on Neil's aim/Diff.mpl
                 defines two fairly specific types of trig. question
                 and corresponding test/mark functions.
aim/Util1.mpl .. some utility functions mainly used by/with Trig package
                 also added SimplestDecimal function described in
                 response to Gustav's query a few days ago
Aim.mpl
Make.mpl ....... small modification to allow comments in PackageList file

PackageList .... added the two new package files and a few comments in
                 the header

aim/Util.mpl ... added `aim/ExpandExamplesPath` ... this expands 
                 EXAMPLES at the beginning of a path of a quiz included
                 via the i> or include> tag, to the absolute path of
                 the examples directory (see below)

aim/Compile.mpl  used `aim/ExpandExamplesPath` to expand EXAMPLES for
                 include>d quiz files

Then at the root AIM on CVS (which corresponds to ROOT), I've added
two new directories as I proposed a month or two ago:

examples/
images/

Under examples/ I added a directory of examples for the Trig package:

examples/Trig/

I consider the examples part of the documentation of the Trig package.
Some of the examples use some pre-generated .gifs which I `stole'
(with acknowledgement) from one of Neil's .zip archives. The two .gifs
I use have been added to the images/ directory.

I'd appreciate any comments you might have about any of this.

In particular, I'd be interested to know if people on Windows or 
Mac/OSX boxes (Chris, Jon, ...) have any problems with the example 
quiz files.

I have a number of other things to commit ... but I'll be cleaning them up
a bit first.

  Regards,
  Greg

[Aimmath-developers] reply to message from Ken

[Gustav W D. <gu...@ma...>]

Dear Ken,

thanks for your message. Let me reply to it piece by piece and am forwarding
the reply to the aim-developer list because you ask questions of interest to
all AiM developers.

> As you can see, I've never worked on a group coding project before, so
> please forgive my complete ignorance on these matters.  Any help or advice
> you can provide will appreciated.

This applies to almost all of us. I think that Greg is the only one of us
who has worked on a team project (GAP) before. So we are trying to figure
things out together. We should try to find what works best for us.

>  There are so many web sites and email lists
> now that I'm not really sure how things are organized anymore.

That is my fault for not explaining the motivation behind the new AiM
homepage.

We are now following the example of most open source projects hosted on
SourceForge: we have an official homepage at aimmath.sourceforge.net for the
general public and we have a more technical project page at
sourceforge.net/projects/aimmath. The second one is mostly for developers.

There are therefore now also two places to post messages. For the general
public and AiM users it is simple. They will always post to the forums on
aimmath.sourceforge.net. For us developers it is a bit more complicated. We
would generally post to the forums at aimmath.sourceforge.net. In particular
announcements about developments plans on which we would like public input
should be posted to the forum "Future AiM".

Anything of relevance ONLY to us developers (like how to work with CVS) and
anything that we want to keep among ourselves should be posted to the
aim-developers mailing list hosted at sourceforge.net/projects/aimmath.

Finally there is the old JISC mailing list. This will currently reach some
more people than the aimmath site. So any major announcement (of new
releases for example) should probably be cross posted to that list.

>Plus I'm
> still trying to figure out CVS. I will probably be writing to you
> with some
> questions soon.

We really need some good documentation. For the moment there are the big CVS
manuals at http://www.cvshome.org/docs/manual/cvs-1.11.6/cvs.html and
http://cvsbook.red-bean.com/cvsbook.html.


> However, I probably should post somewhere to a discussion list what we are
> planning.  So here is another question for you... where is the appropriate
> place to post such a message about current work?  There is Sangwin's
> original list, some developer lists on sourceforge, some forums on your
> moodle aim site, etc, and I'm not really sure what is best?

What you describe is very interesting. I don't see any reason to keep the
information private. So please post this info to the "Future AiM" forum at
aimmath.sourceforge.net.


> In addition, I
> assume that if we are working on the servlet, we ought to somehow
> check-out
> those source files from the CVS or mark them in some way to say we are
> working on them?

CVS has this feature allowing you to notify other CVS users that you are
editing a file. See
http://cvsbook.red-bean.com/cvsbook.html#Watches__CVS_As_Telephone_. However
with just 8 of us it is probably easiest to just post messages to the
aim-developers list about what you are currently working on.


> But this will be a major rewrite, so it isn't
> like we are
> modifying those files but rather replacing them.  What is the right way to
> signify this to the other developers in the SourceForge/CVS environment??

Again: simply send a message to the aim-developers list.

And please break you postings into small bits, each containing only one
question or one topic, with a suitable subject line for each one. That makes
it easier for everyone to find the message again later. This message for
example has the subject line "committing server mods". But it also has other
interesting questions about which forum to post to, and how to use CVS.
These questions and the replies to them would get lost easily.

I am looking forward to the post describing you work on the server.

Best wishes,

Gustav

[Aimmath-developers] developer 8

[Gustav W D. <gu...@ma...>]

We can welcome Alex Smith as new member on the AiM development team. He will
be working with me on the Moodle-AiM interface.

Gustav

[Aimmath-developers] [ aimmath-Bugs-766067 ] aim/Test versus aim/TestMatrix

[SourceForge.net <no...@so...>]

Bugs item #766067, was opened at 2003-07-04 17:16
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=439479&aid=766067&group_id=44411

Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Gustav W Delius (gustav_delius)
Assigned to: Nobody/Anonymous (nobody)
Summary: aim/Test versus aim/TestMatrix

Initial Comment:
The following does not work:

h> A:=matrix(2,2,[1,2,3,4])
t> Please try to type the matrix $$@A@$$ into the 
boxes below
c> MATRIX(2,2)
s> [ans->`aim/Test`(ans,A),A]
end>

The answer is marked as incorrect, irrespective of what 
the student puts into the matrix boxes.

It will work with `aim/TestMatrix` though. This is not in 
accordance with the documentation for `aim/Test` 
which says that it will check the type of arguments 
passed and call the appropriate routine automatically.


----------------------------------------------------------------------

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[Aimmath-developers] Variables in AiM

[Dr GW D. <gw...@yo...>]

Our week of learning how to writing AiM questions has just come to an
end. From now on the students will be working on their own.

We have had a lot of difficulties with the way AiM handles variables.
The problem is that we do not have enough information on what logic AiM
follows. For example I had expected both of the following two questions
to print out a matrix. However the first one prints P whereas the second
prints a matrix. Why is that?

t> matrix problem
s> [ proc(ans) P:=matrix(2,2,[1,2,3,4]);
   `aim/t`("Here should be a matrix: $$@P@$$");1 end proc,1]
end>

t> matrix problem
h> P:=matrix(2,2,[1,2,3,4]);
s> [ proc(ans) 
   `aim/t`("Here is a matrix: $$@P@$$");1 end proc,1]
end>

If the second version had not printed P I would have put it down to P
having been implicitly declared local to the procedure. But it is the
first version that does not print P even though it is defined just in
the previous line.

The week was very exhausting because every few minutes another student
came with a similar riddle and we had to experiment until we found
something that worked. It would be extremely useful to us if someone
could explain to us how things should work.

Gustav

[Aimmath-developers] buggy SourceForge tracker

[Gustav W D. <gu...@ma...>]

I dislike the SourceForge tracker. It appears very buggy too, adding items
multiple times and sending out duplicates of e-mails. We will switch to
something better soon. In the meantime, apologies for all the e-mail
flooding your inboxes.

Gustav

[Aimmath-developers] [ aimmath-Feature Requests-729538 ] Web interface to upload/download images

[SourceForge.net <no...@so...>]

Feature Requests item #729538, was opened at 2003-04-29 12:50
Message generated for change (Comment added) made by gustav_delius
You can respond by visiting: 
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Category: Interface Improvements
Group: None
>Status: Closed
Priority: 2
Submitted By: Chris Sangwin (sangwinc)
Assigned to: Nobody/Anonymous (nobody)
Summary: Web interface to upload/download images

Initial Comment:
Currently to access the /images directory one needs 
root access.  There could be a web interface to 
upload/download images.   

Perhaps images should be included with the question 
source.  Cross reference needs to be made with 
question,quiz and subject sharing mechanisms.

----------------------------------------------------------------------

>Comment By: Gustav W Delius (gustav_delius)
Date: 2003-07-04 07:30

Message:
Logged In: YES 
user_id=737246

This has now become a part of Request 765653 "Organization 
of images", https://sourceforge.net/tracker/index.php?
func=detail&aid=765653&group_id=44411&atid=439482

----------------------------------------------------------------------

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[Aimmath-developers] [ aimmath-Feature Requests-765651 ] Authentication

[SourceForge.net <no...@so...>]

Feature Requests item #765651, was opened at 2003-07-03 23:06
Message generated for change (Comment added) made by gustav_delius
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=439482&aid=765651&group_id=44411

Category: None
Group: None
Status: Open
Priority: 5
Submitted By: Neil Strickland (npstrick)
Assigned to: Nobody/Anonymous (nobody)
Summary: Authentication

Initial Comment:
It should be possible to 
* share student information between subjects
* obtain student information from, and check passwords
   against, an external directory such as an LDAP server
   or a VLE.

There should also be better provision for self-registration
and finely controlled guest access.


----------------------------------------------------------------------

>Comment By: Gustav W Delius (gustav_delius)
Date: 2003-07-04 07:29

Message:
Logged In: YES 
user_id=737246

the solution to this that we are going to follow at York is to 
handle all the authentication through Moodle. 
User accounts in Moodle are shared between subjects.

Moodle has a large number of different options for how it 
does its authentication and thus there should be something 
there for most institutions. You can find a description of the 
features here:
http://moodle.org/doc/?file=features.html.

I think it would be too much work to try to replicate all that 
in AiM itself.


----------------------------------------------------------------------

Comment By: Gustav W Delius (gustav_delius)
Date: 2003-07-04 07:28

Message:
Logged In: YES 
user_id=737246

the solution to this that we are going to follow at York is to 
handle all the authentication through Moodle. 
User accounts in Moodle are shared between subjects.

Moodle has a large number of different options for how it 
does its authentication and thus there should be something 
there for most institutions. You can find a description of the 
features here:
http://moodle.org/doc/?file=features.html.

I think it would be too much work to try to replicate all that 
in AiM itself.


----------------------------------------------------------------------

Comment By: Gustav W Delius (gustav_delius)
Date: 2003-07-04 07:27

Message:
Logged In: YES 
user_id=737246

the solution to this that we are going to follow at York is to 
handle all the authentication through Moodle. 
User accounts in Moodle are shared between subjects.

Moodle has a large number of different options for how it 
does its authentication and thus there should be something 
there for most institutions. You can find a description of the 
features here:
http://moodle.org/doc/?file=features.html.

I think it would be too much work to try to replicate all that 
in AiM itself.


----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=439482&aid=765651&group_id=44411

[Aimmath-developers] [ aimmath-Feature Requests-765651 ] Authentication

[SourceForge.net <no...@so...>]

Feature Requests item #765651, was opened at 2003-07-03 23:06
Message generated for change (Comment added) made by gustav_delius
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=439482&aid=765651&group_id=44411

Category: None
Group: None
Status: Open
Priority: 5
Submitted By: Neil Strickland (npstrick)
Assigned to: Nobody/Anonymous (nobody)
Summary: Authentication

Initial Comment:
It should be possible to 
* share student information between subjects
* obtain student information from, and check passwords
   against, an external directory such as an LDAP server
   or a VLE.

There should also be better provision for self-registration
and finely controlled guest access.


----------------------------------------------------------------------

>Comment By: Gustav W Delius (gustav_delius)
Date: 2003-07-04 07:28

Message:
Logged In: YES 
user_id=737246

the solution to this that we are going to follow at York is to 
handle all the authentication through Moodle. 
User accounts in Moodle are shared between subjects.

Moodle has a large number of different options for how it 
does its authentication and thus there should be something 
there for most institutions. You can find a description of the 
features here:
http://moodle.org/doc/?file=features.html.

I think it would be too much work to try to replicate all that 
in AiM itself.


----------------------------------------------------------------------

Comment By: Gustav W Delius (gustav_delius)
Date: 2003-07-04 07:27

Message:
Logged In: YES 
user_id=737246

the solution to this that we are going to follow at York is to 
handle all the authentication through Moodle. 
User accounts in Moodle are shared between subjects.

Moodle has a large number of different options for how it 
does its authentication and thus there should be something 
there for most institutions. You can find a description of the 
features here:
http://moodle.org/doc/?file=features.html.

I think it would be too much work to try to replicate all that 
in AiM itself.


----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=439482&aid=765651&group_id=44411

[Aimmath-developers] [ aimmath-Feature Requests-765651 ] Authentication

[SourceForge.net <no...@so...>]

Feature Requests item #765651, was opened at 2003-07-03 23:06
Message generated for change (Comment added) made by gustav_delius
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=439482&aid=765651&group_id=44411

Category: None
Group: None
Status: Open
Priority: 5
Submitted By: Neil Strickland (npstrick)
Assigned to: Nobody/Anonymous (nobody)
Summary: Authentication

Initial Comment:
It should be possible to 
* share student information between subjects
* obtain student information from, and check passwords
   against, an external directory such as an LDAP server
   or a VLE.

There should also be better provision for self-registration
and finely controlled guest access.


----------------------------------------------------------------------

>Comment By: Gustav W Delius (gustav_delius)
Date: 2003-07-04 07:27

Message:
Logged In: YES 
user_id=737246

the solution to this that we are going to follow at York is to 
handle all the authentication through Moodle. 
User accounts in Moodle are shared between subjects.

Moodle has a large number of different options for how it 
does its authentication and thus there should be something 
there for most institutions. You can find a description of the 
features here:
http://moodle.org/doc/?file=features.html.

I think it would be too much work to try to replicate all that 
in AiM itself.


----------------------------------------------------------------------

You can respond by visiting: 
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[Aimmath-developers] [ aimmath-Feature Requests-765646 ] Separate login page editor

[SourceForge.net <no...@so...>]

Feature Requests item #765646, was opened at 2003-07-03 22:52
Message generated for change (Comment added) made by gustav_delius
You can respond by visiting: 
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Category: Interface Improvements
Group: None
Status: Open
Priority: 5
Submitted By: Neil Strickland (npstrick)
Assigned to: Nobody/Anonymous (nobody)
Summary: Separate login page editor

Initial Comment:
Move editing of login pages from the Zone admin page
to a separate page.

----------------------------------------------------------------------

>Comment By: Gustav W Delius (gustav_delius)
Date: 2003-07-04 07:25

Message:
Logged In: YES 
user_id=737246

Login could be most conveniently handled by Moodle. This is 
how we will do things at York. The necessary interface 
between Moodle and AiM will be released this summer. 

----------------------------------------------------------------------

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RE: [Aimmath-developers] [ aimmath-Feature Requests-765650 ] Questionnaires

[Gustav W D. <gu...@ma...>]

> A facility to attach a questionnaire to a quiz.  This should
> probably be implemented as a special question type.

That is interesting. What type of questions do you have in mind for such a
questionnaire?

Gustav

RE: [Aimmath-developers] [ aimmath-Feature Requests-765651 ] Authentication

[Gustav W D. <gu...@ma...>]

> Summary: Authentication

the solution to this that we are going to follow at York is to handle all
the authentication through Moodle.

Moodle has a large number of different options for how it does its
authentication and thus there should be something there for most
institutions. You can find a description of the features here:
http://moodle.org/doc/?file=features.html.

I think it would be too much work to try to replicate all that in AiM
itself.

Gustav

[Aimmath-developers] [ aimmath-Feature Requests-765663 ] Customized parsing

[SourceForge.net <no...@so...>]

Feature Requests item #765663, was opened at 2003-07-03 23:35
Message generated for change (Tracker Item Submitted) made by Item Submitter
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Category: None
Group: None
Status: Open
Priority: 5
Submitted By: Neil Strickland (npstrick)
Assigned to: Nobody/Anonymous (nobody)
Summary: Customized parsing

Initial Comment:
It should be possible to specify a parsing function for
text questions.  One could then write specialised 
functions to allow students to enter permutations in
standard cycle notation, or to enter subintervals of
the real line using the standard notation with square
and round brackets.  One could also write a 
non-simplifying parser to allow AIM to distinguish 
between "1/2 + 1/3" and "5/6", for example.

----------------------------------------------------------------------

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[Aimmath-developers] [ aimmath-Feature Requests-765658 ] Letter grades

[SourceForge.net <no...@so...>]

Feature Requests item #765658, was opened at 2003-07-03 23:22
Message generated for change (Tracker Item Submitted) made by Item Submitter
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Category: None
Group: None
Status: Open
Priority: 5
Submitted By: Neil Strickland (npstrick)
Assigned to: Nobody/Anonymous (nobody)
Summary: Letter grades

Initial Comment:
A facility to calculate overall grades for quizzes or 
subjects.  These could either be numbers or letter
grades, and it should be possible to specify the 
conversion procedure in a flexible way.

----------------------------------------------------------------------

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[Aimmath-developers] [ aimmath-Feature Requests-765656 ] Logging and reporting of problems

[SourceForge.net <no...@so...>]

Feature Requests item #765656, was opened at 2003-07-03 23:17
Message generated for change (Tracker Item Submitted) made by Item Submitter
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Category: None
Group: None
Status: Open
Priority: 5
Submitted By: Neil Strickland (npstrick)
Assigned to: Nobody/Anonymous (nobody)
Summary: Logging and reporting of problems

Initial Comment:
If any of the following things happen, then AIM should
record it in a special log file, and possibly also send an
email alert to the administrator.

* Any initialization procedure or marking procedure 
   generates an untrapped error.

* Anyone tries to log on as the administrator, but 
   gives the wrong password.

* Any student enters an answer containing words 
   listed in `aim/SafeParse/HackNames`.


----------------------------------------------------------------------

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[Aimmath-developers] [ aimmath-Feature Requests-765653 ] Organization of images

[SourceForge.net <no...@so...>]

Feature Requests item #765653, was opened at 2003-07-03 23:12
Message generated for change (Tracker Item Submitted) made by Item Submitter
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Category: None
Group: None
Status: Open
Priority: 5
Submitted By: Neil Strickland (npstrick)
Assigned to: Nobody/Anonymous (nobody)
Summary: Organization of images

Initial Comment:
There should be facilities to keep track of which static
images are associated to which subjects/quizzes/
questions, and possibly a separate directory tree in
which to store the image files.  There should also be
some convenient functions that can be used in 
question source files to generate URL's to refer to these
image files.

----------------------------------------------------------------------

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[Aimmath-developers] [ aimmath-Feature Requests-765651 ] Authentication

[SourceForge.net <no...@so...>]

Feature Requests item #765651, was opened at 2003-07-03 23:06
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=439482&aid=765651&group_id=44411

Category: None
Group: None
Status: Open
Priority: 5
Submitted By: Neil Strickland (npstrick)
Assigned to: Nobody/Anonymous (nobody)
Summary: Authentication

Initial Comment:
It should be possible to 
* share student information between subjects
* obtain student information from, and check passwords
   against, an external directory such as an LDAP server
   or a VLE.

There should also be better provision for self-registration
and finely controlled guest access.


----------------------------------------------------------------------

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[Aimmath-developers] [ aimmath-Feature Requests-765650 ] Questionnaires

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Feature Requests item #765650, was opened at 2003-07-03 23:01
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Category: None
Group: None
Status: Open
Priority: 5
Submitted By: Neil Strickland (npstrick)
Assigned to: Nobody/Anonymous (nobody)
Summary: Questionnaires

Initial Comment:
A facility to attach a questionnaire to a quiz.  This should
probably be implemented as a special question type.

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[Aimmath-developers] [ aimmath-Feature Requests-765646 ] Separate login page editor

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Feature Requests item #765646, was opened at 2003-07-03 22:52
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Category: Interface Improvements
Group: None
Status: Open
Priority: 5
Submitted By: Neil Strickland (npstrick)
Assigned to: Nobody/Anonymous (nobody)
Summary: Separate login page editor

Initial Comment:
Move editing of login pages from the Zone admin page
to a separate page.

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[Aimmath-developers] [ aimmath-Bugs-728388 ] "Back" link not working

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Bugs item #728388, was opened at 2003-04-27 12:19
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Category: Admin Interface
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 2
Submitted By: Gustav W Delius (gustav_delius)
Assigned to: Nobody/Anonymous (nobody)
Summary: "Back" link not working

Initial Comment:
When on the admin.html page I enter a wrong password 
and then press "Zone login" I come to a page 
saying: "Incorrect password. Back Close ". The "Close" 
link works fine but the "Back" link does not in Internet 
Explorer 6. This appears to be a javascript problem.

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>Comment By: Neil Strickland (npstrick)
Date: 2003-07-03 13:25

Message:
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I have fixed this, and will commit the change (together with
a lot of other stuff) soon.

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[Aimmath-developers] [ aimmath-Bugs-765268 ] variables in procedures

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Bugs item #765268, was opened at 2003-07-03 12:08
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Category: None
Group: None
Status: Open
>Resolution: Postponed
Priority: 5
Submitted By: Gustav W Delius (gustav_delius)
Assigned to: Nobody/Anonymous (nobody)
Summary: variables in procedures

Initial Comment:
The following harmless looking question gives a 
compilation error 
Type error in assignment: field IProc in class 
`aim/TextQuestion` should have type procedure

h> a1:=1;
   f:=x->a1;
t> ?
a> 1
end>

However the following works:

h> a1:=1;
   f:=proc(x) global a1; a1 end proc;
t> ?
a> 1
end>

Is this expected behaviour or a bug?

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Comment By: Neil Strickland (npstrick)
Date: 2003-07-03 12:53

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This problem is caused by a bug in the makeglobal function
in the codegen package, which is (as of Maple 8) deprecated
in favour of the ToInert function and related utilities.  I
therefore propose to do nothing about it until I get around
to rewriting the `aim/Compile` function to use ToInert.

Neil

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[Aimmath-developers] [ aimmath-Bugs-764611 ] Complex number I leads to compilation error

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Bugs item #764611, was opened at 2003-07-02 14:18
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Category: Marking
Group: None
Status: Open
>Resolution: Postponed
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: Complex number I leads to compilation error

Initial Comment:
The following question

t> Give $\sqrt{-1}$.
a> I
end>

gives the compilation error

Error while globalizing variables: 
invalid parameters for creation of table or array 
iproc = 

The same problem occurs if I try

t> Give $\sqrt{-1}$.
a> Complex(0,1)
end>

However the following works:

t> Give $\sqrt{-1}$.
a> sqrt(-1)
end>

If you need I somewhere in your calculations the safest 
solution that Marc found is to define a variable

b:= sqrt(-1)

and then use b instead of I everywhere.


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Comment By: Neil Strickland (npstrick)
Date: 2003-07-03 12:52

Message:
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This problem is caused by a bug in the makeglobal function
in the codegen package, which is (as of Maple 8) deprecated
in favour of the ToInert function and related utilities.  I
therefore propose to do nothing about it until I get around
to rewriting the `aim/Compile` function to use ToInert.

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