Fayvad Survey

Affine Cassini-Soldner ↔ UTM: cadastral sheet mode (database controls) or custom control-point mode with fitted parameters and residuals.

PROJ4 / EPSG reprojection via pyproj, plus NLIMS log-table Cassini with configurable central meridian. General-purpose; no sheet correction.

Closed and open traverse computation with misclosure checks, Compass (Bowditch) or Transit rule adjustment, and coordinate propagation.

Compute parcel area and boundary perimeter from surveyed coordinates using the shoelace method, with map preview and edge lengths.

Forward (polar) and inverse (join) computations — coordinates from bearing and distance, or bearing and distance between two points.