STACK

Dear developers,
I am currently beginning to use STACK and I am really excited. Many thanks for your wonderful work!
Unfortunately my institution will update to moodle 4.0 and since the current version of STACK officially only works up to version 3.11 of moodle they refuse to install the STACK plugin.
Does STACK actually work on moodle 4?
Best regards
Michael

Mojca,
Thanks for your interest in STACK. The issue with integrating 1/x, and the various options available to teachers, are documented here: https://docs.stack-assessment.org/en/Authoring/Answer_tests/#Int
STACK supports teachers accepting both log(x) and log(abs(x)) as different teachers have asked for each option. If the option you want does not already exist, please carefully explain what you need and raise an issue here on Github: https://github.com/maths/moodle-qtype_stack

I just started using Stack plug-in for Moodle and noticed a fault in integration of 1/x. The sollution should be ln(abs(x)) an not ln(x). Absolute value is missing.
Thanks for the really good plug-in I'm enthusiastic about it
Best wishes,
Mojca

Ralf, we need to review libraries and add them one at a time: https://docs.stack-assessment.org/en/Authoring/Author_FAQ/#why-does-a-maxima-function-not-work-in-stack
If you would like us to review and add a specific library in Maxima to STACK then please raise an issue on github https://github.com/maths/moodle-qtype_stack and we can discuss it there with the other STACK developers.
I'm sorry lsquares_estimates isn't available immediately, this is a reasonable request and expectation!

Hi,
first of all: Great PlugIn, thanks for that.
I´m trying to create some task using regression.
In Maxima I can use lsquares:
(%i201) load (lsquares)$
M : matrix ([1, 1], [2, 7/4], [3, 11/4], [4, 13/4], [5, 20/4]);
(%o201) matrix(
[1, 1],
[2, 7/4],
[3, 11/4],
[4, 13/4],
[5, 5]
)
(%i203) lsquares_estimates (
M, [x,y], y=a*x^2+b*x+c, [a,b,c]);
(%o203) a=3/28,b=43/140,c=13/20
that does´nt work in Stack, even if i add lsquares to the libraries in the plugin setting in Moodle-Administation.
Am I missing something or is the lsquares-library not supportet?
Best rgards
Ralf

Is it possible to add that Stack 4.3.8 is suitable for Moodle 3.10 and Moodle 3.11 in the description of the version tab,please ? (my university refuses to install Stack because they think it's not adapted for Moodle 3.10).

Hello All, trying to install the Stack type on moodle3.9. I am a little confused during the install process.
1. Is Yaml required?
2. Can Maxima happily reside on the moodle server or is it best to install on it's own server?
Please advise, I am a little more confused than usual!
Eric

Is there any plan to build a virtual machine with moodle and complete stack, so that one can download it and check the installation and try stack on his own PC? That would be lovely!!!

Hello.
I want to use stack on my moodle, I have installed stack plugin but when I try to set questions I get a TIMEDOUT error. What else do I need to install on my server for stack to work and in which folder on the server. Thanks Evarist

Hello,
i'm trying to set up stack with the MaximaPool https://github.com/uni-halle/maximapool-docker Before I wanted to go to the next step (protection with http-auth), I called the function script.
On the instance of my institution (moodle 3.5, but I still suspect a newer plugin version, since this was installed only recently) I get a timeout. Since I have no access to the server, I have no idea how to debug this.
From my own instance (moodle 3.9) I can call the health check with no problems.
Is there any idea how I can approach the problem?
I can access the MaximaPool Site - It looks like this:
Name Value
Servlet started: 2020-07-07 09:03:14
Up time: 8 days, 9 hours, 54 minutes, 36 seconds
Active threads: 41
Java free memory: 127.1 MB out of 252.0 MB total memory (3.9 GB max limit)
System load: 0.06 over 6 processors
Overall pool performance
Name Value
Processes starting up: 0
Processes in use: 0
Total number of processes started: 141301
Running versions
Pool performance - 2020042000
Name Value
Ready processes in the pool: 8
Total processes started: 397
Current demand estimate: 0.16354299545350473 Hz
Current start-up time estimate: 83 ms
Recent start-up times: 88 ms 79 ms 97 ms 76 ms 76 ms
Recent request times: 18:57:20 18:57:30 18:57:30 18:57:41 18:57:41

I have been testing, and latest version works fine on Moodle 3.9.

Kimmo, yes we are very close to releasing STACK 4.3. When we do this it will be available as an official release in moodle.org.

Hi
there seem to be newer version of the plugin in the git repository.
Is it functional and if it is, can you set it available to moodle.org also?

Kimmo Kiiskinen,
The STACK plugin in thriving and we will be supporting Moodle 3.6 and 3.7. I'm in the process of getting a new release together, and checking these versions of Moodle will be part of that work. I've no reason to suspect 3.7 won't work, and I've been using STACK with 3.6 on my dev machine without problems. I just haven't done some formal checks, and tagged a plugin. Any problems, please let me know and I'll fix them.
Chris

Hi
is the current version compatible with Moodle 3.6 and 3.7, or is there an updated version coming?