LDA train and test

Hello,
I would like to ask how can i use the train data subset to fit a model, and test data to test it
i already split the data into data.train and data.test, but i got an error invalid list type when using the lda function
data.lda <- lda(g ~ ., data = mydata,subset = data.train), where the g is the group column in mydata.
Can anyone help me ?
Thanks :slightly_smiling_face:

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Thanks i will check it out first :slight_smile: