aimmath-developers — Development related messages

[Aimmath-developers] congratulations: 0 bugs

[Gustav W D. <gw...@yo...>]

Congratulations: all bugs reported on SourceForge (and many others of
course) are now fixed! Neil's latest changes fixed a lot of them in one go.
Many thanks to everyone.

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 (Settings changed) made by gustav_delius
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=439479&aid=766067&group_id=44411

Category: None
Group: None
>Status: Closed
>Resolution: Fixed
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] [ aimmath-Bugs-772556 ] function in map becomes a t

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

Bugs item #772556, was opened at 2003-07-16 19:31
Message generated for change (Settings changed) made by gustav_delius
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Category: None
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Gustav W Delius (gustav_delius)
Assigned to: Nobody/Anonymous (nobody)
Summary: function in map becomes a t

Initial Comment:
The following will print [1,4,9]



h> f := x->x^2;; 

   b :=eval(map(f,[1,2,3]));

t> $$@b@$$

a>1

end>



This is expected. 

But the following will print [ t(1), t(2), t(3)] 



h> b := eval(map(x->x^2,[1,2,3]));

t> $$@b@$$

a>1

end>



Why? Where did the t come from?





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

Comment By: Gustav W Delius (gustav_delius)
Date: 2003-07-18 22:01

Message:
Logged In: YES 
user_id=737246

Hi Gustav,



I would say that the t was a local variable generated by the 

codegen

Maple package. Occasionally, I have found that t has been 

assigned to

1 and just recently E was set to 0 for a quiz. I believe these 

are all

codegen bugs, nothing to do with the AIM code. In many 

contexts the arrow

notation fails to work in a quiz question and you need to use 

the

proc() end; syntax. If you want to use an anonymous 

function in b

use unapply, e.g.



h> b := eval(map(unapply(x^2, x), [1,2,3]));



Unfortunately, these bugs will remain I suspect until the 

usage of

codegen is replaced by CodeGeneration. Anyway, when Neil 

gets back,

he may be able to elaborate.



  Regards,

  Greg

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

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

Bugs item #765268, was opened at 2003-07-03 12:08
Message generated for change (Settings changed) made by gustav_delius
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Category: None
Group: None
>Status: Closed
>Resolution: Fixed
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?

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

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

Message:
Logged In: YES 
user_id=430681

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-764731 ] multiplying Arrays with integer entries

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

Bugs item #764731, was opened at 2003-07-02 17:03
Message generated for change (Settings changed) made by gustav_delius
You can respond by visiting: 
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Category: None
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Gustav W Delius (gustav_delius)
Assigned to: Nobody/Anonymous (nobody)
Summary: multiplying Arrays with integer entries

Initial Comment:
Below are two short question sources. The first one 

compiles with no problem, the second one gives the 

compilation error:



Error while globalizing variables: 

unable to determine the type of {rational, List(1 .. 

2,integer)} 

iproc = 



h> A:=1/5*array([8.0,4]);

a>1

end>



h> A:=1/5*array([8,4]);

a>1

end>

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

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

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

Bugs item #764611, was opened at 2003-07-02 14:18
Message generated for change (Settings changed) made by gustav_delius
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Category: Marking
Group: None
>Status: Closed
>Resolution: Fixed
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.



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

Comment By: Greg Gamble (gregg0)
Date: 2003-08-23 19:18

Message:
Logged In: YES 
user_id=766524

Just last week I encountered this problem when putting a

quiz together, I used i

;-)



I guess the same cause prevents one being able to use the

differential operator D.

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

Comment By: Gustav W Delius (gustav_delius)
Date: 2003-08-23 16:37

Message:
Logged In: YES 
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Neil, will you get around to fixing this for AiM 3.0? If not I will 

update the documentation to tell the user to use sqrt(-1) 

instead of I or Complex(0,1).

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

Comment By: Gustav W Delius (gustav_delius)
Date: 2003-08-23 16:35

Message:
Logged In: YES 
user_id=737246

Neil, will you get around to fixing this for AiM 3.0? If not I will 

update the documentation to tell the user to use sqrt(-1) 

instead of I or Complex(0,1).

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

Comment By: Gustav W Delius (gustav_delius)
Date: 2003-08-23 16:34

Message:
Logged In: YES 
user_id=737246

Neil, will you get around to fixing this for AiM 3.0? If not I will 

update the documentation to tell the user to use sqrt(-1) 

instead of I or Complex(0,1).

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

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

Message:
Logged In: YES 
user_id=430681

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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[Aimmath-developers] towards a beta release

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

Dear All,

we are close to releasing the first beta.

It now turns out that Ken's modifications and Alex's modifications to the
servlet do not work well together. So AiM 3.0 beta will be released with
Alex's modified servlet. Ken's servlet will be offered as an extra download.

Neil at some point committed code to CVS that assumed that the kill program
is there. So even though we don't use Ken's servlet at the moment we
nevertheless include the code looking for the kill progam and process.exe in
the windows case.

Not using Ken's servlet removes the need to have two separate releases for
windows and linux. The branch "windows" will not be used for the release.

I have zipped up the head branch and posted it at
http://aimmath.sourceforge.net/aim.zip. Could you please test this release?
I have tested the installation on a clean Windows 2000 machine.

There is one thing that still needs to be done before we can release this as
a beta to the public: installation instructions for linux and OS X need to
be written. Any volunteers?

You will notice that I changed the installation instructions for Windows a
bit. Installation is now done through a Maple worksheet AutoConfWin.mws
rather than through AutoConf.mpl. This is because I can still remember that
when I first installed AiM I had some difficulties figuring out how to start
a command line maple in the correct directory (maple was not in my path).
Every windows user should be able to open a maple worksheet however.

Please continue to commit changes to the head branch. The beta will always
be based on the latest version in CVS.

I think we should release the first beta as soon as someone has written
installation instructions for linux and has tested them.

Gustav

[Aimmath-developers] codegen

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

I have committed a new version of aim/Compile.mpl that
uses ToInert/FromInert instead of codegen[makeglobal] etc.
I think that this cures all reported bugs with question
compilation.  However examples like this are particularly
subtle:

local> a,f
h> f := (t) -> t^2 + a;
...
s> [proc(ans)
     local b,g;
     g := (s) -> s^2 + a + b;
     ...
    end,
    42]

There are intricate questions about the scoping of variables
etc in the functions f and g.  If you have any question files
like this, please test them, and let me know about any problems.

Neil
 

[Aimmath-developers] com.oreilly classes moved

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

Because no one objected, I have now moved the com.oreilly classes from the
WEB-INF\cos to the WEB-INF\classes directory permanently. They will no
longer be copied during installation. You will notice the move next time you
update from CVS. You can delete the WEB-INF\cos directory.

Gustav

[Aimmath-developers] APPROVED and more

[Ken M. <mo...@pt...>]

I just committed the changes to AIM described in the PROPOSAL below.  In
addition to those listed in the proposal I have also made the following
changes.  If you have any concerns or want a particular change removed, let
me know.

Note: due to the time constraint on releasing the beta, I did not get a
chance to test if these changes work for AIM guests.  That's still on the
Things to Do list.  It should work for registered students though.

COMMITTED CHANGES: Aug 25, 2003
-------------------------------

* committed all of the changes listed in the PROPOSAL below.

* Added Gustav's modifications to the code that produces the quiz selection
page with marks.  I also tweaked this a little from his original version in
order to (a) accommodate multipart questions and (b) improve the formatting
and information of the marks shown.  As a result a student will see their
marks on each quiz they attempted on the quiz selection page when they
select the quiz.

* Added two radio buttons to the bottom of the quiz selection table on the
student quiz selection page.  They say:

 O Show me only one question at a time.
 O Show me the entire quiz.

This allows the student to decide if they want to see the quiz in Focused or
Unfocused mode before they select the quiz.  The default is Focused mode.

The motivation behind this change is mainly to improve efficiency,
especially in a situation where we have many students all trying to access a
quiz at roughly the same time (like in a proctored computer lab setting).
It also seems to be a natural option to have on that page.  If a student
wants to work in Focused mode on the quiz, they simply select the quiz, but
if they intend to just print out the whole quiz and work on it later (like
many of my students do), they can choose to see the quiz in Unfocused mode
immediately.  Whichever radio button they select, they still can switch
between Focused and Unfocused mode while viewing the quiz, of course.

* Made changes throughout the AIM code to implement a new
Config['TimeLimit'] variable. This can now be set in ManualConfig just like
the other global Config values.  The default value is still Neil's value of
2.0 seconds.  I was getting lots of timeout error messages with a 2 second
time limit (perhaps my machine is slow) so I implemented this as a way for
the administrator to change the system default time limit value during
installation.

* Modified the Focus/Unfocus behavior so that when a student selects New
Version or Show Solutions link while viewing a quiz, it retains the current
quiz's focus setting.  Thus, if the quiz is currently focused and the
student asks to see solutions, it will show the solution to the currently
focused question.  If the quiz is focused (showing the solution to one
question) and a student requests a New Version, it returns a new version
focused on question #1. If the current quiz is not focused, the result of
Solutions or New Version will also be unfocused.  This makes sense from the
users' point of view, since their preference of Focusing/Unfocusing is
retained until they decide to change it themselves.

* Fixed minor bugs in aim/Question.mpl and aim/analyze/Question.mpl that
prevented question analysis.

* Added "Sum" to the list of OKNames in SafeParse.mpl.  I use this in
questions about summation notation.

* Made changes so that students are now informed of the number of incorrect
attempts they have made on a question whether or not they got it correct.
In the past it would simply report that their mark was zero.


PREVIOUS PROPOSAL:
-----Original Message-----
From: aim...@li...
[mailto:aim...@li...]On Behalf Of Ken
Monks
Sent: Tuesday, August 19, 2003 2:57 PM
To: Aim Developers
Subject: [Aimmath-developers] PROPOSAL: Maple 9 mods;focus/solutions
behavior;bug fixes

Aug 19, 2003
------------
PROPOSAL
  I propose to commit the following changes

* Globally rename Latex to aim/LaTeX as described in previous postings by
Greg Gamble and myself to accomodate Maple 9 (affects 15 files)

* Minor tweak to `Class/Typefunction` to fix a problem that occurs in Maple
9

* Several changes to Aim.mpl, Util.mpl, aim/Question.mpl and aim/Quiz.mpl to
do the following:

  + Fixed the Mark Summary table so it uses the correct links when the quiz
is focused

  + Removed the focus option from the question toolbars when the Trying a
quiz in aim/Question.mpl (since there is already a "Try Separately" link)

  + Fixed a minor formatting bug in aim/Question.mpl

  + Changed the background color for the teacher's answer and solutions to
make it easier to quickly distinguish between viewing solutions and working
on an active quiz while focusing and unfocusing and reloading quizzes (see
below)

  + Added the aim/HTMLColoredPage method to aim/Util.mpl to allow us to set
the background color for the entire html page. Initially I was going to use
this to distinguish solutions pages from active quiz pages, but it was
overkill. :) Thus this function currently is not used for anything, but I
left it in there in case we decide to add such options in the future.

  + Changed the behavior of AIM with regard to showing solutions as follows:

    The only way for a student to get a new version of a quiz is if he (a)
is attempting the quiz for the first time or (b) requests a new version by
clicking on the New Version link.

    In particular, if the student elects to show solutions to a quiz, he
will continue to see the solutions to the quiz he just completed no matter
what he does until he clicks New Version. This allows a student, for
example, to view solutions on one machine, then switch to a different
machine to print them out (or view some of the solutions, then go for lunch,
and then return and read the rest of them).

    When viewing solutions, the focus option now focuses on the given
question and shows its solution instead of generating a new quiz and
focusing on that newly generated question. This allows a student to print
the solution to just one question instead of printing the solutions to the
entire quiz.

-----------------------------------------
Ken Monks - Professor of Mathematics
            University of Scranton
            Scranton, PA 18510
email: mailto:mo...@sc...
web:   http://www.scranton.edu/~monks
-----------------------------------------

Re: [Aimmath-developers] windows installer

[Manolis M. <ma...@ma...>]

Gustav said:

>Thanks. It would be really good if someone could find the time during
>the next few weeks. Is Visual Studio mentioned by Neil the best way
>to do it or do you know of simpler alternatives?

I didn't like Visual Studio's installation process. It doesn't give you much
freedom. In addition I don't have a register version any more. The company I
was working for is happy to produce an installation for us with
InstallShield but this is again limited as InstallShield needs an external
.exe to do some intelligent installation and we would have to write that. A
friend send me InnoSetup 4 which has a script like language. I had a look
and it seems that it can achieve (maybe in a simplistic way at least for
now) something like our needs. I 'll find more time next week and try to do
that.

Manolis

ps. If anyone else finds more time: http://www.jrsoftware.org/

[Aimmath-developers] changes in CVS

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

I have made some changes in CVS:

1) as announced, the develop branch has been merged back into head. You can
from now on ignore the develop branch. All development work should be done
in the head branch.

2) I have created a branch called "windows". This is the version specific to
windows. It contains Ken's modified servlet for example and installation
instructions tailored for windows. Having this branch makes it easier to
prepare the windows releases. You don't have to worry about this branch.
Before each windows release I will merge the changes on the head branch into
this branch.

3) I have created a new module called "moodle" which contains the aim_quiz
module for moodle that Alex has produced. We'll tell you more about this
moodle stuff soon.

I am sorry I haven't produced the beta release yet. I'll work on it later
today and expect to release it tonight.

Gustav

Re: [Aimmath-developers] codegen bugs

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

On Mon, 25 Aug 2003, Neil Strickland wrote:
> ....
> However, all of this depends on the ToInert and FromInert functions.
> I think that these were introduced in Maple 8, but I'm not 100% sure
> about that.  Can anyone easily check Maple 7 for me?

I still have Maple 7 (as well as Maple 8) here ... and I've just checked:
Maple 7 has ToInert and FromInert.

  Regards,
  Greg

RE: [Aimmath-developers] codegen bugs

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

Dear Neil,

> I hope to sort them out in the
> next few days.

that would be great!
 
> I think that these were introduced in Maple 8, but I'm not 100% sure
> about that.  Can anyone easily check Maple 7 for me?

I don't have Maple 7 to check on. But even if it turns out that these
functions were introduced in Maple 8, don't let that stop you!

Gustav

[Aimmath-developers] codegen bugs

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

Several of the reported bugs in AIM, related to questions that
behave strangely or fail to compile, are caused by problems with
the codegen package.  I have now worked out how to deal with marking
procedures without using codegen.  There are some different issues
for initialization procedures, but I hope to sort them out in the
next few days.

However, all of this depends on the ToInert and FromInert functions.
I think that these were introduced in Maple 8, but I'm not 100% sure
about that.  Can anyone easily check Maple 7 for me?

Neil

[Aimmath-developers] merging develop 2_1 back into head

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

Thank you all for the many improvements you have contributed to AiM.

I will now merge the develop_2_1 branch back into the head branch. From now
on all development will take place directly in the head branch.

Gustav

RE: [Aimmath-developers] AiM 3.0 will support Maple versions 7, 8, and 9

[Ken M. <mo...@pt...>]

> -----Original Message-----
> From: aim...@li...
> [mailto:aim...@li...]On Behalf Of
> Gustav W Delius
> Sent: Saturday, August 23, 2003 6:11 AM
> To: AIM developers
> Subject: [Aimmath-developers] AiM 3.0 will support Maple versions 7, 8,
> and 9
>
>
> As far as I am aware there is no one out there who has expressed an
interest
> in using AiM 3.0 with Maple 6 or lower. So AiM 3.0 will support only Maple
> versions 7,8, and 9.
>
> I can't test AiM under Maple 9 but I gather from the posts on this list
that
> all problems have been resolved and the code currently in CVS works with
> Maple 9. Is that correct?

I am currently using the develop_2_1 version of AIM under Maple 9 and after
tweaking the code in a few places (already committed) it seems to be working
fine with one exception. I am getting a very weird sporadic error for
certain questions when I Try (as administrator) a quiz.  Namely, the
teacher's answer that is provided automatically by AIM in the answer box for
certain questions when Trying a quiz is sometimes marked as being invalid
with errors like:

"Your answer contains a forbidden name: x."

Sometimes the variable is "k", or "m" or "x" depending on what the question
selects for the variable and which question it is but it is usually a single
letter variable.  The odd part of this is that if I try the same question
separately, and use the exact same AIM-supplied answer, it marks it correct
with no problems.  In fact, I can mark the question as many times as I like
if I Try it separately or if I try it as a student in a quiz, and it works
flawlessly, but when I Try the whole quiz I get the validation error.  It is
not repeatable either.  If I Try the quiz a second time the same question
might work, but some other questions in the same quiz might have the
validation error.

I have tried to reproduce this behavior in Maple 8, but it never happens, so
I think this is something new to Maple 9.  My guess is that there is some
new twist in the internal way that Maple stores things that is throwing off
the use of disassemble() in SafeParse, but the sporadic nature of the
problem is making that really hard to track down.

Does anyone have any idea about what might be causing it?

Other than this it seems to work fine in Maple 9 as far as I've tested it.

KEN

RE: [Aimmath-developers] Ken's servlet mod

[Ken M. <mo...@pt...>]

> -----Original Message-----
> From: aim...@li...
> [mailto:aim...@li...]On Behalf Of
> Gustav W Delius
> Sent: Saturday, August 23, 2003 6:01 AM
> To: AIM developers
> Subject: [Aimmath-developers] Ken's servlet mod
>
>
> I intend to include Ken's modification of the servlet in the
> Windows version
> of AiM 3.0 beta.
>
> Can you please bring me up to date on the problems that the
> modified servlet causes under Linux? Is it correct that these problems
mean that the Linux
> version of AiM 3.0 beta should be released with the unmodified servlet?

I only run AIM under Windows 2000, and my servlet mod works fine under that
OS.  I wrote it so that it would be compatible with Linux also, but I
haven't tested that in quite a while and the last I heard from Greg was that
it was hanging sporadically under Linux.  I think the problem might be the
difference in the way the two OS's multitask, since it is using a separate
java thread to monitor Maple processes so if they go awry they can be killed
by the original thread.  I have not tested it under Windows 95/98, though I
assume it would work under XP if it works for 2000.

I was going to try to fix the problem it has under Linux, but even under
Windows there are still situations where a wayward Maple process can crash
the entire server.  So I abandoned that work and decided to move towards the
distributed TCP servlet design.

Still my current servlet mod does work as claimed under Windows 2000, adds
some nice new features, and is somewhat more robust than the current
distribution.  So if you want to distribute it with the Windows version of
AIM, that would be fine.  The only problem I could foresee would be if it
doesn't work under Win 95/98 for some reason.

> When will Ken's new servlet be ready?

Unfortunately not in time for this release.  My student was working on it,
but I have not been able to contact him in the past few weeks. He is
thinking of using this as part of his Masters Thesis project in software
engineering, and classes just started today, so I would say that you should
consider that servlet project to be a long term project.

KEN

Re: [Aimmath-developers] Ken's servlet mod

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

On Sat, 23 Aug 2003, Gustav W Delius wrote:
> I intend to include Ken's modification of the servlet in the Windows version
> of AiM 3.0 beta.
> 
> Can you please bring me up to date on the problems that the modified servlet
> causes under Linux? Is it correct that these problems mean that the Linux
> version of AiM 3.0 beta should be released with the unmodified servlet?

I believe Ken has made modifications since I tried it. Basically, what 
used to happen at least, is that after a while it would `freeze' up ...
as a user you would click `Mark' or `Validate' and AIM would never come
back ... some sort of deadlock was happening.

  Regards,
  Greg

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

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

Bugs item #764611, was opened at 2003-07-02 22:18
Message generated for change (Comment added) made by gregg0
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=439479&aid=764611&group_id=44411

Category: Marking
Group: None
Status: Open
Resolution: Remind
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.


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

>Comment By: Greg Gamble (gregg0)
Date: 2003-08-24 03:18

Message:
Logged In: YES 
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Just last week I encountered this problem when putting a
quiz together, I used i
;-)

I guess the same cause prevents one being able to use the
differential operator D.

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

Comment By: Gustav W Delius (gustav_delius)
Date: 2003-08-24 00:37

Message:
Logged In: YES 
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Neil, will you get around to fixing this for AiM 3.0? If not I will 
update the documentation to tell the user to use sqrt(-1) 
instead of I or Complex(0,1).

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

Comment By: Gustav W Delius (gustav_delius)
Date: 2003-08-24 00:35

Message:
Logged In: YES 
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Neil, will you get around to fixing this for AiM 3.0? If not I will 
update the documentation to tell the user to use sqrt(-1) 
instead of I or Complex(0,1).

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

Comment By: Gustav W Delius (gustav_delius)
Date: 2003-08-24 00:34

Message:
Logged In: YES 
user_id=737246

Neil, will you get around to fixing this for AiM 3.0? If not I will 
update the documentation to tell the user to use sqrt(-1) 
instead of I or Complex(0,1).

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

Comment By: Neil Strickland (npstrick)
Date: 2003-07-03 20:52

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.

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

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=439479&aid=764611&group_id=44411

Re: [Aimmath-developers] PROPOSAL: Maple 9 mods;focus/solutions behavior;bug fixes

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

On Tue, 19 Aug 2003, Ken Monks wrote:
> These aren't really MAJOR CHANGES (as described in the "Developer's
> Etiquette" document), but I have a general question about protocol that I
> want to ask before committing these changes, so I am listing them below in
> case someone wants to comment.
> 
> I have been in the habit of commenting my changes by surrouning new lines
> with
> 
> # KM
> :
> # END KM
> 
> and commenting out existing lines with
> 
> # DIST (existing line goes here)
> 
> This turns out to be VERY useful to me because I can easily find the lines
> that I have changed and can easily revert back to what used to be there when
> things don't work as planned.  I noticed also that Greg and Gustav have done
> similar things in the past, and that has also been helpful in my opionion
> since it is more convenient than using diff to compare two revisions of the
> file.  Clearly we want to eventually remove such commenting before the code
> goes into the main AIM distribution, but my question is whether or not we
> should commit changes to the develop_2_1 version with such comment lines or
> not.
> 
> Personally, I think we should commit such lines except in cases where the
> comments would get out of hand, like when searching and replacing something
> globally in all files, for example.  Then when the develop_2_1 version is
> ready to be released, we could just grep out all of the extra comment lines.
> The alternative would be for everyone to eliminate any such comment lines
> before committing the changes so that no such comments appear in the
> develop_2_1 code.  How do the rest of you feel about this?

I think there is a clear value in doing this where there is a danger that
someone not understanding what the old code breaks, puts it back again.

Also, if one sees that code is broken, but doesn't understand completely 
what it was intended to do, it is good practice to comment out the broken
lines and maybe add a comment to that effect. Then if something else gets
broken by the change, the comments may lead to the `right' solution.

On the other hand where a fix is obvious, I think there's no need to
include a comment.

I have made a comment and added by initials in some cases, e.g. 
in Aim.mpl I added a StringTools:-RegSub command ... I thought that
later readers of the code would wonder what the hell the line was for.
I think comments like this are then useful ... and the initials might
help another developer track down a further explanation, if needed.

> Anyway, here are the changes I've made that I propose to commit:
> 
> Aug 19, 2003
> ------------
> PROPOSAL
>   I propose to commit the following changes
> 
> * Globally rename Latex to aim/LaTeX as described in previous postings by
> Greg Gamble and myself to accomodate Maple 9 (affects 15 files)
> 
> * Minor tweak to `Class/Typefunction` to fix a problem that occurs in Maple
> 9
> 
> * Several changes to Aim.mpl, Util.mpl, aim/Question.mpl and aim/Quiz.mpl to
> do the following:
> 
>   + Fixed the Mark Summary table so it uses the correct links when the quiz
> is focused
> 
>   + Removed the focus option from the question toolbars when the Trying a
> quiz in aim/Question.mpl (since there is already a "Try Separately" link)
> 
>   + Fixed a minor formatting bug in aim/Question.mpl
> 
>   + Changed the background color for the teacher's answer and solutions to
> make it easier to quickly distinguish between viewing solutions and working
> on an active quiz while focusing and unfocusing and reloading quizzes (see
> below)
> 
>   + Added the aim/HTMLColoredPage method to aim/Util.mpl to allow us to set
> the background color for the entire html page. Initially I was going to use
> this to distinguish solutions pages from active quiz pages, but it was
> overkill. :) Thus this function currently is not used for anything, but I
> left it in there in case we decide to add such options in the future.
> 
>   + Changed the behavior of AIM with regard to showing solutions as follows:
> 
>     The only way for a student to get a new version of a quiz is if he (a)
> is attempting the quiz for the first time or (b) requests a new version by
> clicking on the New Version link.
> 
>     In particular, if the student elects to show solutions to a quiz, he
> will continue to see the solutions to the quiz he just completed no matter
> what he does until he clicks New Version. This allows a student, for
> example, to view solutions on one machine, then switch to a different
> machine to print them out (or view some of the solutions, then go for lunch,
> and then return and read the rest of them).
> 
>     When viewing solutions, the focus option now focuses on the given
> question and shows its solution instead of generating a new quiz and
> focusing on that newly generated question. This allows a student to print
> the solution to just one question instead of printing the solutions to the
> entire quiz.

All sounds great Ken. I thought for a second that I wouldn't want the 
change regarding New Version ... but I have to agree the current 
behaviour has been a nuisance, in a few instances for the reasons you 
gave.

  Regards,
  Greg

[Aimmath-developers] [ aimmath-Bugs-765275 ] "Try question separately" and matrices

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

Bugs item #765275, was opened at 2003-07-03 12:18
Message generated for change (Comment added) made by gustav_delius
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=439479&aid=765275&group_id=44411

Category: None
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Gustav W Delius (gustav_delius)
Assigned to: Nobody/Anonymous (nobody)
Summary: "Try question separately" and matrices

Initial Comment:
When I try out a quiz with MATRIX type questions and 
then click on the "Try question separately" link next to a 
matrix question, the answer is filled in incorrectly in the 
matrix question. The system tries to put all the answers 
into to top row of the matrix.


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

>Comment By: Gustav W Delius (gustav_delius)
Date: 2003-08-23 15:39

Message:
Logged In: YES 
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I can no longer reproduce this. Did this go away by itself or 
did someone fix it? I any case I will close this bug.

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

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https://sourceforge.net/tracker/?func=detail&atid=439479&aid=765275&group_id=44411

RE: [Aimmath-developers] examples

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

> What I'd like to see eventually is a whole suite of examples. Typical
> quiz writers I imagine will like to have templates. Also, I didn't
> understand what Neil's Diff.mpl package was about, until I saw his
> examples. I regard examples as an important component of documentation.
> They also provide a ready-made test suite for AIM.

I agree. So all question source files that any of you commit to the examples
folder in CVS will be included in the release.

Gustav

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

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

Bugs item #764611, was opened at 2003-07-02 14:18
Message generated for change (Comment added) made by gustav_delius
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=439479&aid=764611&group_id=44411

Category: Marking
Group: None
Status: Open
Resolution: Remind
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.


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

>Comment By: Gustav W Delius (gustav_delius)
Date: 2003-08-23 16:37

Message:
Logged In: YES 
user_id=737246

Neil, will you get around to fixing this for AiM 3.0? If not I will 
update the documentation to tell the user to use sqrt(-1) 
instead of I or Complex(0,1).

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

Comment By: Gustav W Delius (gustav_delius)
Date: 2003-08-23 16:35

Message:
Logged In: YES 
user_id=737246

Neil, will you get around to fixing this for AiM 3.0? If not I will 
update the documentation to tell the user to use sqrt(-1) 
instead of I or Complex(0,1).

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

Comment By: Gustav W Delius (gustav_delius)
Date: 2003-08-23 16:34

Message:
Logged In: YES 
user_id=737246

Neil, will you get around to fixing this for AiM 3.0? If not I will 
update the documentation to tell the user to use sqrt(-1) 
instead of I or Complex(0,1).

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

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

Message:
Logged In: YES 
user_id=430681

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.

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

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=439479&aid=764611&group_id=44411

[Aimmath-developers] "add or edit questions" link added to admin/quiz.mpl

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

I just committed a change to admin/quiz.mpl that adds a link "Add or edit
questions" link to the admin quiz page to make it more intuitive. People
never guessed that "Browse source" was the link to click when they wanted to
add a question.

Gustav