The function uses a 50% jackknife resampling to calculate a pseudo-replicate of the expression matrix. The resampled expression values are used thereupon to calculate p-values for the differential expression between the given groups. Only two-group comparisons are allowed for the perfomed t-test.

1 | ```
resamplingPvalues(exprMat, groups, alternative = c("two.sided", "less", "greater"), resampleMat=FALSE)
``` |

`exprMat` |
Matrix with microarray expression values. |

`groups` |
Factors for two groups that are tested for differential expression. |

`alternative` |
Testing alternatives for the t-test: "two.sided", "less" or "greater". |

`resampleMat` |
Boolean value, whether to retrieve the matrix of jacknife resamples or not. |

A result list is returned, consisting of:

`p.values` |
VNumerical vector of p-values. |

`resampleMat` |
Matrix of resampled expression values. |

Daniela Beisser

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