This is a reparameterized matrix from the original design matrix that
time, line, time x line such that each column of the
reparameterized design matrix corresponds to a test of interest such as
line main effect,
time2 - time0,
time6 - time0,
time0, and interaction effect of
timei - time0 with
using this reparameterized design matrix in the analysis, for example,
regression coefficients corresponding to its second column
Line main effect.
A design matrix with 8 columns
Intercept, line2, time2, time6,
time24, linetime2, linetime6, linetime24.
1 2 3
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