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Extract values from a matricized (x,y,z) of a 4D tensor using a space-time coordinate matrix.

Source: R/all_generic.R, R/sparse_neurovec.R
matricized_access-methods.Rd

This function extracts the values of the elements in a 4D tensor, where the first three dimensions (x,y,z) have been matricized into a single dimension, using a space-time coordinate matrix. The input i is an index matrix, where each row specifies a (x,y,z,t) coordinate. The output is a vector containing the values of the elements in x at the specified space-time coordinates.

Usage

matricized_access(x, i, ...)

# S4 method for class 'SparseNeuroVec,matrix'
matricized_access(x, i)

# S4 method for class 'SparseNeuroVec,integer'
matricized_access(x, i)

# S4 method for class 'SparseNeuroVec,numeric'
matricized_access(x, i)

# S4 method for class 'BigNeuroVec,matrix'
matricized_access(x, i)

# S4 method for class 'BigNeuroVec,integer'
matricized_access(x, i)

# S4 method for class 'BigNeuroVec,numeric'
matricized_access(x, i)

Arguments

x

a data source.

i

an index matrix specifying the space-time coordinates.

...

additional arguments to be passed to methods.