Description Usage Arguments Details Value Author(s) References Examples

`reg.coeffs`

calculates back regression coefficients for true variables (experimental groups) from dummy variables regression coefficients.

1 2 3 | ```
reg.coeffs(coefficients,
indepen = groups.vector[nchar(groups.vector)==min(nchar(groups.vector))][1],
groups.vector, group)
``` |

`coefficients` |
vector of regression coefficients obtained from a regression model with dummy variables |

`indepen` |
idependent variable of the regression formula |

`groups.vector` |
vector indicating the true variable of each variable in |

`group` |
true variable for which regression coefficients are to be computed |

regression coefficients in coefficients vector should be ordered by polynomial degree in a regression formula, ie: intercept, $x$ term, $x^2$ term, $x^3$ term, and so on...

`reg.coeff` |
vector of calculated regression coefficients |

Ana Conesa and Maria Jose Nueda, mj.nueda@ua.es

Conesa, A., Nueda M.J., Alberto Ferrer, A., Talon, T. 2005. maSigPro: a Method to Identify Significant Differential Expression Profiles in Time-Course Microarray Experiments.

1 2 3 4 | ```
groups.vector <-c("CT", "T1vsCT", "T2vsCT", "CT", "T1vsCT","T2vsCT", "CT", "T1vsCT", "T2vsCT")
coefficients <- c(0.1, 1.2, -0.8, 1.7, 3.3, 0.4, 0.0, 2.1, -0.9)
## calculate true regression coefficients for variable "T1"
reg.coeffs(coefficients, groups.vector = groups.vector, group = "T1")
``` |

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