| yXm {lmreg} | R Documentation |
Prepare design matrix for balanced two way layout
Description
Prepares design matrix for balanced two way classified data and response vector in corresponding order.
Usage
yXm(response, treatments, blocks)
Arguments
response |
Response vector as provided (numeric). |
treatments |
Vector of treatment levels as provided (either numeric or character). |
blocks |
Vector of block levels as provided (either numeric or character). |
Value
Returns a list with following components.
X |
A binary matrix with number of rows equal to length of response and number of columns equal to the total number of levels of treatments and blocks plus one. Each row has exactly three 1s: in the first position and in the two positions representing the treatment and block levels. |
y |
Numeric vector of response values, permuted to correspond with the rows of X. |
Author(s)
Debasis Sengupta <shairiksengupta@gmail.com>, Jinwen Qiu <qjwsnow_ctw@hotmail.com>
References
Sengupta and Jammalamadaka (2019), Linear Models and Regression with R: An Integrated Approach.
Examples
data(poison)
yXm(poison$Survtime,poison$Treatment,poison$Poison)