applyextcalib.massvector {mscalib}R Documentation

External Calbiration

Description

Applys object of class calibspline to massvector to correct ofr measurment errors. The error model stored in the calibspline are obtained by the function getextcalib

Usage

## S3 method for class 'massvector':
applyextcalib(object,cS,...)

Arguments

...
cS calibspline
object massvector

Details

In case of external calibration some sample spots are only dedicated to calibration. Calibration samples which produces equidistant peaks, which exact masses are known, can be used to precisely estimate the mass dependent error function.

Value

massvector calibrated massvector

Author(s)

Witold Wolski wolski@molgen.mpg.de

References

-
Gobom J, Mueller M, Egelhofer V, Theiss D, Lehrach H, Nordhoff E, 2002. A calibration method that simplifies and improves accurate determination of peptide molecular masses by MALDI-TOF MS. Anal Chem. 74(15):3915-23.
-
Wolski http://www.molgen.mpg.de/~wolski/mscalib

See Also

applyextcalib.massvectorlist, applycalib.calibspline, getextcalib.massvector, getextcalib.massvectorlist,

Examples

 data(ppg)
 data(mv1)
 res<-getextcalib(ppg[[1]],getPPGmasses(),error=200)
 mv2<-applyextcalib(mv1,res)
 compare(mv1,mv2)

[Package mscalib version 0.5.9 Index]