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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