Conventions

Matrix orientation

Data matrices use p × n layout: one variable per row and one observation per column.

Conditional functions

For a bivariate copula ,

and

The ASCII API is hfunc1, hfunc2, hinv1, and hinv2. Unicode aliases are also exported.

Rotations

Rotations follow the standard 0, 90, 180, and 270 degree convention. Internally they are represented through SurvivalCopula flips.

R-vine matrices

rvine_matrix provides matrix exchange for standard R-vine structures. Equivalent models may admit different valid matrix encodings, so structural equality should be checked through represented edges rather than raw matrix text.