This function allows user to provide a regression formula for rotation on x and optionally on y. If regression formula for y is not provide, svd is applied to the residual data deflated by x to get y coordinates. The regression formula uses ENA dimensions are dependent variables. The first predictor has to be two-group categorical, binary, or numerical.
Arguments
- enaset
An
ENAset- params
list of parameters, may include: x_var: Regression formula for x direction, such as "lm(formula=V ~ Condition + GameHalf + Condition : GameHalf)", where V always stands for the ENA points. y_var: Regression formula, similar to x_var, for y direction (optional).