grg-builder

group	custos
name	grg_builder
description	Place Gridded Reference Graphics (GRGs) on the map
script_paths	["custos.grg_builder/build_grg.lua","custos.grg_builder/grg_bounds.lua"]
tags	["grg","grid","reference","area","operations"]
examples	["build a GRG over the objective area","create a gridded reference graphic","place a GRG grid","lay down a reference grid for the compound","make a GRG centered on this position"]

GRG Builder

Places a Gridded Reference Graphic (GRG) on the ATAK map. GRGs divide a geographic area into a labeled grid for coordinating operations.

Uses ATAK's built-in CustomGrid via GridLinesMapComponent — no external plugin required for grid placement.

Rules

• ALWAYS call build_grg to change spacing, size, or position — never assume a previous call is still active. Each call replaces the current grid.
• When the operator asks to adjust an existing GRG (change spacing, resize, move), re-call build_grg with the updated parameters.