Description Usage Arguments Value Examples
View source: R/simulation-functions.R
Create a design matrix containing a linear trend, a treatment effect, and a
trend-by-treatment interaction for a single-case design with m
cases and n
measurement occasions.
1 | design_matrix(m, n, treat_times = n/2 + 1, center = 0)
|
m |
number of cases |
n |
number of time points |
treat_times |
(Optional) vector of length |
center |
centering point for time trend. |
A design matrix
1 | design_matrix(3, 16, c(5,9,13))
|
Loading required package: nlme
id constant treatment trend interaction
1 1 1 0 1 0
2 1 1 0 2 0
3 1 1 0 3 0
4 1 1 0 4 0
5 1 1 1 5 1
6 1 1 1 6 2
7 1 1 1 7 3
8 1 1 1 8 4
9 1 1 1 9 5
10 1 1 1 10 6
11 1 1 1 11 7
12 1 1 1 12 8
13 1 1 1 13 9
14 1 1 1 14 10
15 1 1 1 15 11
16 1 1 1 16 12
17 2 1 0 1 0
18 2 1 0 2 0
19 2 1 0 3 0
20 2 1 0 4 0
21 2 1 0 5 0
22 2 1 0 6 0
23 2 1 0 7 0
24 2 1 0 8 0
25 2 1 1 9 1
26 2 1 1 10 2
27 2 1 1 11 3
28 2 1 1 12 4
29 2 1 1 13 5
30 2 1 1 14 6
31 2 1 1 15 7
32 2 1 1 16 8
33 3 1 0 1 0
34 3 1 0 2 0
35 3 1 0 3 0
36 3 1 0 4 0
37 3 1 0 5 0
38 3 1 0 6 0
39 3 1 0 7 0
40 3 1 0 8 0
41 3 1 0 9 0
42 3 1 0 10 0
43 3 1 0 11 0
44 3 1 0 12 0
45 3 1 1 13 1
46 3 1 1 14 2
47 3 1 1 15 3
48 3 1 1 16 4
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