TRAINING must be a numeric matrix.

Can anyone help me solving this error?

Answer 1

[John BG]

hi Hazel

read the help for command training

c = cvpartition(10,'kfold',3)
c = 
K-fold cross validation partition
             N: 10
   NumTestSets: 3
     TrainSize: 7  6  7
      TestSize: 3  4  3

training(c,1)
ans =
     0
     0
     1
     1
     1
     1
     1
     1
     0
     1

as you can see, the input is not just an array of numbers, it has to belong to a certain class in this case, class cvpartition

checking the class cvpartition we get these different ways that cvpartition objects can be generated:

please, if you find my answer useful, would you be so kind to mark it as accepted answer?

thanks in advance. Regards

John BG

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Answer 2

[Star Strider]

If your data are currently in a cell array, consider using the cell2mat function.

If your data are currently in a table, getting the data into a numeric array is a bit more involved. See Access Data in a Table for details.