I need to join some columns in the dataset attached below. When I joined the columns int_rate and id with the following code, it works.
TrainInputs = [TrainDataset.int_rate,TrainDataset.id]
But when I was trying to join the columns int_rate and sub_grade, it failed.
TrainInputs = [TrainDataset.int_rate,TrainDataset.sub_grade]
Error using horzcat
Dimensions of matrices being concatenated are not consistent.
Could you help me find out why and how should I do this? Thank you for your time.