Elements of slopes are different

[quantmeth]

The data (a list of possibly) within the slopes element of the sim_slopes() function, are of different class, the first one is of class "data.frame" and the second one is of classes "matrix" and "array". This is probably to the two moderators or the modx.values.

This prevents the uses of apply() functions.

out <- sim_slopes(model = reg.res, pred = X, modx = W, mod2 = Z, modx.values = "plus-minus", mod2.values = "plus-minus", jnplot = TRUE