addProperty: Add and initialize dataframe column
In RMassBank: Workflow to process tandem MS files and build MassBank records

Description Usage Arguments Value Methods (by class) Author(s)

Adds a new column of a defined type to a data.frame and initializes it to a value. The advantage of doing this over adding it with $ or [,""] is that the case nrow(o) == 0 is adequately handled and doesn't raise an error.

addProperty(o, name, type, value = NA)

## S4 method for signature 'RmbSpectrum2,character,character'
addProperty(o, name, type, value = NA)

## S4 method for signature 'data.frame,character,character'
addProperty(o, name, type, value = NA)

`o`	`data.frame` to add the column to
`name`	Name of the new column
`type`	Data type of the new column
`value`	Initial value of the new column (`NA` if not given)

Expanded data frame.

o = RmbSpectrum2,name = character,type = character: Add a new column to the RmbSpectrum2 properties
o = data.frame,name = character,type = character: Add a new column to a data.frame

stravsmi

RMassBank documentation built on Nov. 8, 2020, 6:06 p.m.