[1.0.0] Visibility

[brendancol]

1.0.0 readiness: Visibility

Area: Surface Functions: viewshed, cumulative_viewshed, visibility_frequency, line_of_sight
Source: xrspatial/{viewshed,visibility}.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/viewshed.py
• Security
• Performance
• API consistency

Last swept: none yet

Examples

• Notebook example
• (optional) standalone script

Linked bug issues

• viewshed() mutates the caller's input DataArray (int16 becomes float64) #2786 (High) viewshed() mutates the caller's input DataArray (int16 becomes float64)
• viewshed: validate regular grid spacing instead of silently assuming it #2789 (Medium) viewshed: validate regular grid spacing instead of silently assuming it
• viewshed: ValueError 'node not found' on NaN input (CPU sweep) #2792 (Medium) viewshed: ValueError 'node not found' on NaN input (CPU sweep)
• Broken bounds-check guard in viewshed _calculate_event_row_col() #2793 (High) Broken bounds-check guard in viewshed _calculate_event_row_col()
• viewshed(): validate scalar params (max_distance >= 0, finite observer/target elev) before dispatch #2794 (Medium) viewshed(): validate scalar params (max_distance >= 0, finite observer/target elev) before dispatch