Description Usage Arguments Value Author(s) See Also Examples

View source: R/functions-MSnSet.R

This function calculates the column-wise coefficient of variation
(CV), i.e. the ration between the standard deviation and the
mean, for the features in an `MSnSet`

. The CVs are calculated
for the groups of features defined by `groupBy`

. For groups
defined by single features, `NA`

is returned.

1 |

`x` |
An instance of class |

`groupBy` |
An object of class |

`na.rm` |
A |

`norm` |
One of normalisation methods applied prior to CV
calculation. See |

`suffix` |
A |

A `matrix`

of dimensions `length(levels(groupBy))`

by
`ncol(x)`

with the respecive CVs. The column names are formed
by pasting `CV.`

and the sample names of object `x`

, possibly
suffixed by `.suffix`

.

Laurent Gatto and Sebastian Gibb

1 2 3 4 5 |

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