[1.0.0] Terrain metrics

[brendancol]

1.0.0 readiness: Terrain metrics

Area: Surface Functions: roughness, tpi, tri, landforms
Source: xrspatial/terrain_metrics.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/terrain_metrics.py
• Security
• Performance
• API consistency

Last swept: none yet

Examples

• Notebook example
• (optional) standalone script

Linked bug issues

none yet