Convert Backend to DelayedArray

Provides a DelayedArray interface for storage backends. The returned object lazily retrieves data via the backend when subsets of the array are accessed.

Usage

as_delayed_array(backend, sparse_ok = FALSE, ...)

# S3 method for class 'nifti_backend'
as_delayed_array(backend, sparse_ok = FALSE, ...)

# S3 method for class 'matrix_backend'
as_delayed_array(backend, sparse_ok = FALSE, ...)

# S3 method for class 'study_backend'
as_delayed_array(backend, sparse_ok = FALSE, ...)

# Default S3 method
as_delayed_array(backend, sparse_ok = FALSE, ...)

Arguments

backend

A storage backend object

sparse_ok

Logical, allow sparse representation when possible

...

Additional arguments passed to methods

Value

A DelayedArray object

Examples

if (FALSE) { # \dontrun{
b <- matrix_backend(matrix(rnorm(20), nrow = 5))
da <- as_delayed_array(b)
dim(da)
} # }