rcpp_hdf5dataset_subset

OTHER

1 Usage

rcpp_hdf5dataset_subset(ptr_sexp, rows, cols)

2 Arguments

Parameter	Description
`ptr_sexp`	External pointer to hdf5Dataset
`rows`	Integer vector with row indices (1-based, as in R)
`cols`	Integer vector with column indices (1-based, as in R)

3 Value

Numeric matrix with requested data

4 Details

This function reads a subset of data from an HDF5 dataset. Indices are 1-based (R convention) and converted internally to 0-based (C++ convention).

The function handles: - Contiguous blocks (e.g., rows 1:10) - Non-contiguous indices (e.g., rows c(1,3,5,7)) - Full dimensions (e.g., all rows, specific columns)

---
title: "rcpp_hdf5dataset_subset"
subtitle: "rcpp_hdf5dataset_subset"
---

<span class="category-badge other">OTHER</span>

## Usage

```r
rcpp_hdf5dataset_subset(ptr_sexp, rows, cols)
```
## Arguments

::: {.param-table}
| Parameter | Description |
|-----------|-------------|
| `ptr_sexp` | External pointer to hdf5Dataset |
| `rows` | Integer vector with row indices (1-based, as in R) |
| `cols` | Integer vector with column indices (1-based, as in R) |
:::

## Value

::: {.return-value}
Numeric matrix with requested data

:::
## Details

This function reads a subset of data from an HDF5 dataset.
Indices are 1-based (R convention) and converted internally to 0-based (C++ convention).

The function handles:
- Contiguous blocks (e.g., rows 1:10)
- Non-contiguous indices (e.g., rows c(1,3,5,7))
- Full dimensions (e.g., all rows, specific columns)