hread {recountmethylation} | R Documentation

## Query and store an HDF5 dataset on row and column indices.

### Description

Connect to an HDF5 database h5 file with rhdf5::h5read(). Returns the subsetted data.

### Usage

    hread(ri, ci, dsn = "redsignal", dbn = "remethdb2.h5")

### Arguments

`ri` | Row indices in dataset.
`ci` | Column indices in dataset.
`dsn` | Name of dataset or group of dataset to connect with.
`dbn` | Path to h5 database file.

### Value

HDF5 database connection object.

### Examples

    # Get tests data pointer
    path <- system.file("extdata", "h5test", package = "recountmethylation")
    fn <- list.files(path)
    dbpath <- file.path(path, fn)
    # red signal, first 2 assay addr, 3 samples
    reds <- hread(1:2, 1:3, d = "redsignal", dbn = dbpath)
    dim(reds) # [1] 2 3

[Package recountmethylation version 1.2.3 Index]