diff --git a/docs/conventions.md b/docs/conventions.md index a81be9a..e8bbd36 100644 --- a/docs/conventions.md +++ b/docs/conventions.md @@ -22,13 +22,11 @@ The [Tait-Bryan](https://en.wikipedia.org/wiki/Euler_angles) _z_-_y'_-_x''_ (int Rotations around the _x_-axis are roll (_ɸ_), about the _y_-axis are pitch (_θ_), and about the _z_-axis are yaw (_ψ_). The definitions are such that: - Pitch (_θ_) values of –90°, 0°, and 90° correspond to acoustic wave incidence angles of tail on, dorsal, and head on, respectively, -- Roll (_ɸ_) values of –90°, 0°, and 90° correspond to acoustic wave incidence angles onto the right, dorsal, and left sides of the organism, respectively, and -- a _ψ_ value of 0° occurs when the organism lies along the positive _x_-axis and positive _ψ_ values rotate the organism's head towards the _y_-axis. - +- Roll (_ɸ_) values of –90°, 0°, and 90° correspond to acoustic wave incidence angles onto the right, dorsal, and left sides of the organism, respectively, +- A yaw (_ψ_) value of 0° occurs when the organism lies along the positive _x_-axis and positive yaw values rotate the organism's head towards the positive _y_-axis. All model code should accept angles and produce results in this coordinate system. If the model calculations use a different coordinate system, the code should internally convert between the system given above and the version used in the code. -