Learner ID in MATLAB-Grader?

Does Matlab-Grader has access to an a Learner ID or Solution ID in the script?

I would like to use this ID as the seed in rng() in order to create individual variables for each Learner.

[Alfonso da Silva Saavedra]

Hi! I've done it. Take a look to this example: https://github.com/alfonsovng/matlab-grader-utils/tree/main/examples/3-script-problem-personalized-values-image

Answer 1

[Cris LaPierre]

It does not. However, you can use random number generating functions to define variables in the reference and learner solutions without needing to set rng. The reference and learner workspaces share the same seed, so generate the same random numbers. This will allow you to create randomly generated variables every time a solution is run or submitted.

For an example, look at these problems in the Getting Started with MATLAB sample collection

• Coordinate Transformations - Navigating a robot
• Finding a signal through the noise

You can find this collection of problems on the Add Problem screen in MATLAB Grader

You can copy problems from this collection into yout collection

[Karoline Peters]

Thank you for your answer. But is it possible to get the same random numbers for each Learner after the solution is run. So that every Learner has their own variables?

[Cris LaPierre]

There is no built-in way to generate learner-specific variables, meaning one that is unique to a specific user and does not change every time the code executes.