View source: R/spm12_contrast.R
spm12_contrast | R Documentation |
Build contrasts for SPM12 first level model
spm12_contrast(
name,
weights,
replicate = c("none", "repl", "replsc", "sess", "both", "bothsc")
)
spm12_contrast_list(cons, type = "T")
name |
Name of the contrast |
weights |
Weights of the contrast, must be the same length as the number of regressors |
replicate |
If there are multiple sessions with
identical conditions, one might want to specify contrasts
which are identical over sessions. Options are
no replication ( |
cons |
List of contrasts |
type |
type of contrast, T-statistic or F-statistic |
A list of objects, each with a name
and value
res = spm12_contrast(name = "condition1", weights = c(
1, rep(0, 8)))
print(res)
contrasts = list(
list(name = "LeftHand",
weights = c(1, rep(0, 7)),
replicate = "none",
type = "T" ),
list(name = "RightHand",
weights = c(0, 1, rep(0, 6)),
replicate = "none",
type = "T"),
list(name = "AllEffects",
weights = rbind(
c(1, rep(0, 7)),
c(0, 1, rep(0, 6))
),
replicate = "none",
type = "F")
)
res = spm12_contrast_list(contrasts)
print(res)
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