Undefined function 'normpdf' for input arguments of type 'double'

[SIHranova]

I have tried to run the example in modeling_working_memory.m. I get the following error:

>> modelling_working_memory
Simulating the COIN model.
Error using COIN/compute_marginal_distribution
Undefined function 'normpdf' for input arguments of type 'double'.

Error in COIN/predict_state_feedback (line 697)
            D = obj.compute_marginal_distribution(D);

Error in COIN/main_loop (line 535)
                D = obj.predict_state_feedback(D);                      % predict the state feedback

Error in COIN/simulate_COIN (line 233)
                parfor (run = 1:obj.runs,obj.max_cores)

Error in modelling_working_memory (line 16)
OUTPUT_WM = obj_WM.simulate_COIN;

I noticed in the documentation of the lightspeed toolbox that they changed normpdf to mvnormpdf after version 2.4. Did I not install the right toolbox version? Which one is being used for the COIN model to run?

Thank you for your help!

[jamesheald]

Hey @SIHranova. normpdf is a standard inbuilt matlab function if I'm not mistaken. What do you see if you call 'which normpdf'?

[SIHranova]

Hey @jamesheald, thank you for the quick response! When I do which normpdf I get:

>> which normpdf
'normpdf' not found.

If i try to call the function it suggest the following:

>> normpdf()
normpdf requires Statistics and Machine Learning Toolbox.

Do I also require the Statistics and Machine Learning Toolbox? I assumed that since we have to install the lightspeed toolbox package, we source normpdf from there.

[jamesheald]

Yes, it looks like the Statistics and Machine Learning Toolbox is required. You could either get this package or write the function yourself (it's a single line of code). Let me know if you need any assistance.

[SIHranova]

No, thank you, that is enough! Maybe just add that to your README :)