Gridedge

Gridedge is a term used in several disciplines to denote an edge that lies along the boundary of a grid cell in a regular lattice. In grid graphs, gridedges connect neighboring lattice points on a rectangular lattice; common examples are horizontal edges between (i, j) and (i+1, j) and vertical edges between (i, j) and (i, j+1). The set of gridedges forms the skeleton of the grid graph and is central to analyses of paths, connectivity, and tiling.

In computer graphics and user interface design, gridedges are the delineating lines of a grid used for alignment and snapping. They appear in raster and vector renderings and underpin layout engines such as CSS Grid, SVG tiling, or drawing programs to ensure consistent spacing and alignment.

In spatial indexing and cartography, grid edges bound grid cells used in partitioning space, influencing neighbor relations, querying, and traversal across grid-based structures such as quadtrees or geospatial grids.

Usage and scope vary by field, and gridedge is not a standardized term. When encountered, its precise meaning depends on whether the user is discussing graph theory, computer graphics, or geographic information systems. Related concepts include grid graphs, grid lines, and edges in graph theory.