linear.tools (version 1.3.0)

get_x_all: a unique combinations of model vars, coeff vars and raw vars

Description

a unique combinations of model vars, coeff vars and raw vars

Usage

get_x_all(model, data = NULL)

Arguments

model

lm or glm

data

NULL (default) or data.frame, a new dataset to evaluate the categorical variables. If NULL, then use the data used in model itself.

Value

a data.frame, a unique combinations of model vars, coeff vars and raw vars See get_x for the meaning of model var, coeff var or raw var.The column 'n_raw_in_model' is a numeric field showing how many raw variables are in the corresponding model variables. For example, the model variable 'I(carat*table)' contains two raw variables: 'carat' and 'table'. See example code for details.

Details

For the differences between raw var, model var, and coeff var: see get_x

Examples

get_x_all(model = price~  I(carat^   2) + cut  + I(carat*table),data = ggplot2::diamonds)


#________ irregular formulas
model_dirty = lm(price~  I(carat^   2) + cut  - carat:table - cut ,ggplot2::diamonds)
test = get_x_all(model_dirty)

test
test$coeff
# ______  errors _______________

tryCatch(get_x_all(model = price~  I(carat^   2) + cut  + I(carat*table)),
         error = function(x){
           print(x)
         })