calibrants: Class Representing a Set of Calibrants
In zeehio/msProcess: Protein Mass Spectra Processing

Description Usage Arguments References See Also Examples

A set of calibrants only contains a small number (typically 5 to 7) of proteins of known mass.

Class slots:

masses: A numeric vector of protein masses.
counts: An integer vector of protein counts/abundance.

Class extends:

proteins: by direct inclusion.

The class calibrants inherits all the methods of the class proteins.

1	calibrants(masses, counts)

`masses`	A positive numeric vector of protein masses, whose elements should be unique.
`counts`	A positive integer vector of protein counts/abundance, which should have the same length as `masses`.

Coombes, K.R., Koomen, J.M., Baggerly, K.A., Morris, J.S., Kobayashi, R., “Understanding the characteristics of mass spectrometry data through the use of simulation," Cancer Informatics, 2005(1):41–52, 2005.

proteins, spectrometer.

## generate two protein samples 
cal1 <- calibrants(masses=c(1, 95, 190), counts=as.integer(c(500, 3000, 10000)))
cal2 <- calibrants(masses=10000+200*(0:3), counts=as.integer(c(12000, 4000, 2000, 1000)))

## print the synopsis of the protein samples 
cal1
cal2

## mix the protein samples 
cal <- cal1 + cal2

## visualize the calibrants 
plot(cal, type="h")