// SPDX-License-Identifier: MIT OR Apache-2.0
//! Coordinate system types.
/// Coordinate system for the chart.
#[derive(Clone, Debug, Default)]pubenumCoordSystem{/// Standard Cartesian (x right, y up).
#[default]
Cartesian,/// Flipped: x and y axes swapped (horizontal bars).
Flipped,/// Polar coordinates (r, θ) — **not yet implemented**.
/// Selecting this will produce a compile-time error.
#[doc(hidden)]
Polar,}