How can I extrapolate data using regression learner app?

I have great solutions using the regression learner app. If I export the model and use the same data, then the result differs a lot from the solution in the regression app. I have already read the documentation, but this does not help. Is there someone how is more familiar with this methodology?

Answer 1

[Star Strider]

You have not posted what you are doing or the model you are using, so I suggest that you click on Export Model, then post the exported code for your model here.

Extrapolating to a small extent can work for some models, although for others (such as polynomial models), it can produce inappropriate results. As a general rule, it is best not to extrapolate beyond the region of fit.

Answer 2

[shahar katz]

after you export the modle to - "trainedModel", you can predict simply by -

yfit = trainedModel.predictFcn(data)

For 1d simple interpolation i would suggest interp1 with extrap option. becuase with this regression you need to have a better understanding of what you are doing.