Returns the col_metadata tibble attached to a design matrix produced by
event_model(). If the attribute is missing (e.g., on a manually
constructed matrix) returns NULL.
Arguments
- x
A design matrix or any object with a
design_matrix()method.
Examples
des <- data.frame(
onset = c(0, 10, 20, 30),
run = 1,
cond = factor(c("A", "B", "A", "B"))
)
sframe <- fmrihrf::sampling_frame(blocklens = 40, TR = 1)
emod <- event_model(onset ~ hrf(cond), data = des,
block = ~run, sampling_frame = sframe)
design_meta(emod)
#> # A tibble: 2 × 15
#> col name term_tag term_index condition run role model_source basis_name
#> <int> <chr> <chr> <int> <chr> <int> <chr> <chr> <chr>
#> 1 1 cond_… cond 1 cond.A NA task event HRF
#> 2 2 cond_… cond 1 cond.B NA task event HRF
#> # ℹ 6 more variables: basis_ix <int>, basis_total <int>, basis_label <chr>,
#> # is_block_diagonal <lgl>, modulation_type <chr>, modulation_id <chr>