append_ilr_coords |
Add ILR coordinates to a data.frame containing composition variables |

check_input_args |
Sanity checks for arguments passed to predict_delta_comps() |

check_strictly_positive_vals |
Check if compositional variable are strictly greater than 0 |

cols_exist |
Check whether columns exist in a data.frame |

compare_two_lm |
Statistical test of the collective significance of the ilr variables |

create_comparison_matrix |
Creates row-wise perturbations of compositions from the mean composition |

create_v_mat |
Create ilr basis matrix (V) |

extract_lm_quantities |
Extract critical quantities from a lm object (for confidence interval calculations) |

fairclough |
Data from Fairclough (2017). Fitness, fatness and the reallocation of time between children's daily movement behaviours: an analysis of compositional data |

fat_data |
Randomly generated data to simulate child fat percentage regressed on time-use compositional data |

fit_lm |
fit linear model based on input data.frame |

is_deltacomp_obj |
Is object that is returned from 'pred_delta_comps()'? |

is_lm_mod |
Is object that is returned from 'lm()'? |

is_null_or_na |
Catch NULL, empty and objects containing NAs |

plot_delta_comp |
Plot redistributed time-use predictions from compositional ilr multiple linear regression model fit |

predict_delta_comps |
Get predictions from compositional ilr multiple linear regression model |

print_ilr_trans |
Print the ilr transformation of provided composition parts to console |