Is the data loader loading data for multivariate training?

[hdeng26]

I found the data loader only loads one feature column during training:

seq_x = self.data_x[s_begin:s_end, feat_id:feat_id+1]
seq_y = self.data_y[r_begin:r_end, feat_id:feat_id+1]

May I know how can I load multivariate data for forecasting one feature in long-term time series forecasting exp?