length.HDF5Matrix: Length of an HDF5Matrix
In BigDataStatMeth: Title: Scalable Statistical Computing with HDF5-Backed Matrices
length.HDF5Matrix R Documentation
Length of an HDF5Matrix
Description
Returns the total number of elements in an HDF5Matrix object,
defined as prod(dim(x)) — consistent with the behaviour of
base::length() for ordinary R matrices.
Usage
## S3 method for class 'HDF5Matrix'
length(x)
Arguments
x
An HDF5Matrix object.
Value
A single integer: nrow(x) * ncol(x).
Examples
tmp <- tempfile(fileext = ".h5")
X <- hdf5_create_matrix(tmp, "data/m", data = matrix(1:100, 10, 10))
length(X) # 100
close(X); unlink(tmp)
BigDataStatMeth documentation built on May 15, 2026, 1:07 a.m.
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| length.HDF5Matrix | R Documentation |
Length of an HDF5Matrix
Description
Returns the total number of elements in an HDF5Matrix object,
defined as prod(dim(x)) — consistent with the behaviour of
base::length() for ordinary R matrices.
Usage
## S3 method for class 'HDF5Matrix'
length(x)
Arguments
x |
An |
Value
A single integer: nrow(x) * ncol(x).
Examples
tmp <- tempfile(fileext = ".h5")
X <- hdf5_create_matrix(tmp, "data/m", data = matrix(1:100, 10, 10))
length(X) # 100
close(X); unlink(tmp)
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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