rcpp_hdf5dataset_write_block

Writes a block of data to an HDF5 dataset at specified offset.
Supports writing scalars, vectors, and matrices.

internal

A framework for 'scalable' statistical computing on large on-disk
matrices stored in 'HDF5' files. It provides efficient block-wise
implementations of core linear-algebra operations (matrix multiplication,
SVD, PCA, and QR decomposition) written in C++ and R, along with building
blocks from which higher-level multivariate methods such as canonical
correlation analysis can be constructed. These building blocks are designed
not only for direct use, but also as foundational components for developing
new statistical methods that must operate on datasets too large to fit in
memory. The package supports data provided either as 'HDF5' files or
standard R objects, and is intended for high-dimensional applications such
as 'omics' and precision-medicine research.

Dolors Pelegri-Siso

BigDataStatMeth

Scalable Statistical Computing with HDF5-Backed Matrices

Juan R. Gonzalez

rcpp_hdf5dataset_write_block function

<dl><dt>ptr_sexp</dt>
<dd>External pointer (SEXP) to hdf5Dataset</dd>
<dt>value</dt>
<dd>Data to write (numeric scalar, vector, or matrix)</dd>
<dt>row_offset</dt>
<dd>Starting row (0-based in C++, but receives 1-based from R)</dd>
<dt>col_offset</dt>
<dd>Starting column (0-based in C++, but receives 1-based from R)</dd>
<dt>nrows</dt>
<dd>Number of rows to write</dd>
<dt>ncols</dt>
<dd>Number of columns to write</dd></dl>

Arguments

Write data block to HDF5 dataset (R6 wrapper) — rcpp_hdf5dataset_write_block

<dl>

<dt>ptr_sexp</dt>
<dd>External pointer (SEXP) to hdf5Dataset</dd>


<dt>value</dt>
<dd>Data to write (numeric scalar, vector, or matrix)</dd>


<dt>row_offset</dt>
<dd>Starting row (0-based in C++, but receives 1-based from R)</dd>


<dt>col_offset</dt>
<dd>Starting column (0-based in C++, but receives 1-based from R)</dd>


<dt>nrows</dt>
<dd>Number of rows to write</dd>


<dt>ncols</dt>
<dd>Number of columns to write</dd>

</dl>

rcpp_hdf5dataset_write_block: Write data block to HDF5 dataset (R6 wrapper)

Description

Usage

Value

Arguments