How to predict from exported regression Learner

Question

Match 2018-3-2

回答： Rohan Amarapurkar 2019-3-28

 Hello, I am using the regression learner to train some data. But after exporting my model and want  to predict from new data using the command:

yfit = test3.predictFcn(T):

where T is define as:

T={'200','123','240','50','17','0.2','2000','1900','250','180'}

I receive the following error message

Function 'subsindex' is not defined for values of class 'cell'.

Error in mlearnapp.internal.model.DatasetSpecification>@(t)t(:,predictorNames) (line 163) extractPredictorsFromTableFcn = @(t) t(:,predictorNames);

Can you help me, I am relattively new to his

Answer 1

Rohan Amarapurkar 2019-3-28

Check whether the size of T matches that of the training data or not.

I think this could also be an indexing error as T is a cell. Try using T as a vector instead.