[1.0.0] contours

[brendancol]

1.0.0 readiness: contours

Area: Vector Function: contours
Source: xrspatial/contour.py

Scope

• Public surface frozen against the README feature matrix
• Dark-corner decisions resolved (see [1.0.0] Scope freeze: reconcile dark corners #2930)

Sweep clearance, no CRITICAL or HIGH (accuracy and security first)

• Accuracy /deep-sweep xrspatial/contour.py
• Security
• Performance
• API consistency

Last swept: none yet

Examples

• Notebook example
• (optional) standalone script

Linked bug issues

• contours() validates return_type too late, wasting compute on invalid values #2788 (Low) contours() validates return_type too late, wasting compute on invalid values
• contours() emits degenerate and duplicate lines for exact-level plateaus #2790 (Medium) contours() emits degenerate and duplicate lines for exact-level plateaus
• contours(): n_levels is not validated as a positive integer #2791 (Low) contours(): n_levels is not validated as a positive integer
• contours() emits RuntimeWarning on all-NaN input with auto level selection #2795 (Low) contours() emits RuntimeWarning on all-NaN input with auto level selection

Part of #2951.