MassArrayPeak-class: Class "MassArrayPeak"

In MassArray: Analytical Tools for MassArray Data

Description

A data structure containing information and data for a single peak from a single spectrum

Objects from the Class

Objects can be created by calls of the form new("MassArrayPeak", ID, MW.theoretical, MW.actual, probability, SNR, height, sample.intensity, ref.intensity, sequence, adduct, type, charge, collisions, components, missing, new, ...).

Slots

ID:

Peak ID inicating indexed position within a potentially large list of peaks

MW.theoretical:

Expected molecular weight of peak based on nucleotide sequence

MW.actual:

Observed molecular weight from experimental data

probability:

Object of class "numeric" ~~

SNR:

Signal-to-noise ratio

height:

Raw peak height

sample.intensity:

Raw sample intensity

ref.intensity:

Object of class "numeric" ~~

sequence:

Nucleotide composition or sequence(s) corresponding to peak

adduct:

One of 'Na', 'K', or ” indicating whether or not peak represents a salt adduct of another expected peak

type:

Object of class "character" ~~

charge:

Degree of ionization of fragment (default is '1' indicating a single positive charge per fragment)

collisions:

Number of peaks that share the same molecular weight as the current peak

components:

Number of fragments expected to give rise to a peak of this molecular weight

missing:

Logical indicating whether or not the expected peak is missing from the spectral data

new:

Logical indicating whether or not the observed peak is unexpected given the amplicon sequence

Methods

\$

signature(x = "MassArrayPeak"): ...

\$<-

signature(x = "MassArrayPeak"): ...

initialize

signature(.Object = "MassArrayPeak"): ...

Author(s)

Reid F. Thompson ([e-mail]), John M. Greally ([e-mail])

See Also

See Also MassArrayData

Examples

showClass("MassArrayPeak")

MassArray documentation built on Nov. 8, 2020, 5:16 p.m.