imageData-methods {Cardinal} | R Documentation

## Retrieve Image Data from iSets

### Description

These generic functions image data (typically spectra) stored in an object derived from `iSet`.

### Usage

    imageData(object)
    imageData(object) <- value
    iData(object)
    iData(object) <- value

    spectra(object, ...)
    spectra(object) <- value

    peaks(object, ...)
    peaks(object) <- value

    mzData(object)
    mzData(object) <- value

    peakData(object)
    peakData(object) <- value

### Arguments

`object` | An object, possible derived from `iSet`.
`value` | Value to be assigned to the corresponding object.
`...` | Additional arguments (ignored).

### Value

`imageData` returns an object containing both image data and metadata, usually an object derived from `ImageData`. `iData` returns only the image data in a matrix-like object with the rows corresponding to features and the columns corresponding to pixels. `spectra` is an alias for `iData` for use with `MSImageSet` objects. `mzData` and `peakData` are used for retrieving both peak data and metadata from peak-picked objects. `peaks` retrieves peak cubes from peak-picked objects.

### Author(s)

Kylie A. Bemis

### See Also

`iSet`, `SImageSet`, `MSImageSet`

[Package Cardinal version 1.12.1 Index]