Extract an ordered list of 1D vectors.

This function extracts an ordered list of 1D vectors from an object that supplies vector data. The subset argument specifies the subset of vectors to extract, and can be a vector of indices or a logical vector. The return value is a list containing the extracted vectors in the same order as the specified indices.

Usage

vectors(x, subset, ...)

# S4 method for class 'NeuroVec,missing'
vectors(x)

# S4 method for class 'DenseNeuroVec,missing'
vectors(x)

# S4 method for class 'NeuroVec,numeric'
vectors(x, subset)

# S4 method for class 'NeuroVec,logical'
vectors(x, subset)

# S4 method for class 'NeuroVecSeq,missing'
vectors(x)

# S4 method for class 'NeuroVecSeq,numeric'
vectors(x, subset)

# S4 method for class 'NeuroVecSeq,logical'
vectors(x, subset)

# S4 method for class 'ROIVec,missing'
vectors(x)

# S4 method for class 'matrix,missing'
vectors(x)

# S4 method for class 'ROIVec,integer'
vectors(x, subset)

# S4 method for class 'matrix,integer'
vectors(x, subset)

# S4 method for class 'matrix,numeric'
vectors(x, subset)

# S4 method for class 'ROIVec,numeric'
vectors(x, subset)

# S4 method for class 'ROIVec,logical'
vectors(x, subset)

# S4 method for class 'SparseNeuroVec,missing'
vectors(x, nonzero = FALSE)

Arguments

x

the object that supplies the vector data.

subset

the subset of vectors to extract.

...

additional arguments to be passed to methods.

nonzero

only include nonzero vectors in output list

Examples

file_name <- system.file("extdata", "global_mask_v4.nii", package="neuroim2")
vec <- read_vec(file_name)
v <- vectors(vec)
mean(v[[1]])
#> [1] 0