I have a knn classification model.i want to simulate the same in simulink

I have a knn simulation model. I used functions fitcknn and predict in my script...i want to simulate the same in smulink..kindly suggest me which block to be used for fitcknn and predict in simulink

Answer 1

[Sean de Wolski]

You could use the MATLAB function block to call your KNN model from Simulink.

[pavan sunder]

i tried the same not working. i am unable take the KNN model as input. kindly help me with a more detail explanation..

i wrote the following code in my matlab function block

 function y = KNNclass(mdl2,ts)
 y=predict(mdl2,ts);
 end

the error messagee i received is

Unsupported input format for From Workspace block 'tt/From Workspace'. Available formats are double non-complex matrix, a structure with or without time, or a structure with MATLAB timeseries as leaf nodes. All formats require the data to be finite (not Inf or NaN).

[Sean de Wolski]

It shouldn't be in the from workspace block, it should be in a MATLAB function block. Here's how I would set it up. Note that the knn classifier is already trained and stored in a MAT file. You could swap that out to a call to train it if necessary.