Function block is working in Matlab but not in simulink

Hi,

I am currently trying myself on some human activity recognition on android. I used the "Human Activity Recognition Simulink Model for Smartphone Deployment" example as a starting point but as I wanted to do other activities and some more amndroid stuff I decided to only reuse some part of the 'slexHARAndroidExample' simulink i.e. the extractFeature block.

My problem is that I cannot simulate my model and if I use the embedded coder to deploy it, it classifys everything the same. Interesting is that it works correctly if I do it in Matlab step by step.

So if I run the following lines in Matlab directly it works fine:

feats = extractFeatures(X_Buff,Y_Buff,Z_Buff);
Act = predict(mdl,feats);

But if I want to simulate it by

Act = sim('ClassME')

with the same X_Buff,Y_Buff,Z_Buff in the workspace I get the following Error:

Index exceeds array dimensions.  Index value 0 exceeds valid range [1-2049] of array f. Error in 'ClassME/extractFeatures' (line 133) ofpk = f(olocs); Error in 'ClassME/extractFeatures' (line 62) Error in 'ClassME/extractFeatures' (line 16) 

although the code is the same.

Below is my simulink model where extractFeatures and predictActivity are taken from the example, although I trained the model for the predict block with diefferent data.

I am currently using Matlab version R2018b. Do you have any idea or starting point why it behaves like this?

Answer 1

[omar sheishaa]

i have the same issue when i tried to add the input values statically from an excel file using spreadsheet block in simulink when i tried to run the motion recognition model on the PC

my model is as follow

here is the output

Index exceeds array dimensions. Index value 0 exceeds valid range [1-2049] of array f.

Error in 'slexHARAndroidExample/extractFeatures' (line 133)

ofpk = f(olocs);

Error in 'slexHARAndroidExample/extractFeatures' (line 62)

Error in 'slexHARAndroidExample/extractFeatures' (line 16)

Answer 2

[Santhosh A V]

Hi Michael

From the Figure you have provided X_buff,Y_buff,Z_buff appear to be inputs (similar to IN blocks). While the X_buff,Y_buff,Z_buff in HAR example are buffers.It appears that while simulation the input values are not populated. Can you share the model?

Thanks

Santhosh

[Usman Khan]

Hi Santhosh,

Here is link to the model (https://www.mathworks.com/help/stats/human-activity-recognition-simulink-model-for-deployment.html)

I'm facing the same issue, if you can please guide on it.