select {EpiTxDb} | R Documentation

## Using the "select" interface on `EpiTxDb` objects

### Description

As expected for a `AnnotationDb` object, the general accessors `select`, `keys`, `columns` and `keytypes` can be used to get information from a `EpiTxDb` object.

### Usage

    ## S4 method for signature 'EpiTxDb'
    select(x, keys, columns, keytype, ...)

    ## S4 method for signature 'EpiTxDb'
    columns(x)

    ## S4 method for signature 'EpiTxDb'
    keys(x, keytype, ...)

    ## S4 method for signature 'EpiTxDb'
    keytypes(x)

### Arguments

`x` | a `EpiTxDb` object
`keys, columns, keytype, ...` | See `AnnotationDb` for more comprehensive description of the methods `select`, `keys`, `columns` and `keytypes` and their arguments.

### Value

a `data.frame` object for `select()` and a `character` vecor for `keytypes()`, `keys()` and `columns()`.

### Examples

    etdb_file <- system.file("extdata", "EpiTxDb.Hs.hg38.snoRNAdb.sqlite",
                             package="EpiTxDb")
    etdb <- loadDb(etdb_file)
    etdb

[Package EpiTxDb version 1.0.0 Index]