mass_measurement_error {MSnID}R Documentation

Computes error of the parent ion mass to charge measurement

Description

Computes error of the parent ion mass to charge measurement from experimentalMassToCharge and calculatedMassToCharge. The returned value is in points per million (ppm).

Usage

    mass_measurement_error(object)

Arguments

object

An instance of class "MSnID".

Details

It may be more common to compute "mass measurement error". However, the practical difference in "mass measurement error" and "mass to charge measurement error" is negligible. Moreover, the instruments measure mass/charge ratio, not mass per se.

Value

Returns mass to charge measurement error in "ppm" units.

Author(s)

Vladislav A Petyuk vladislav.petyuk@pnnl.gov

See Also

MSnID recalibrate correct_peak_selection

Examples

data(c_elegans)
ppm <- mass_measurement_error(msnidObj)
hist(ppm, 100)

[Package MSnID version 1.27.0 Index]