Key Map Grid

The Key Map Grid dataset contains square features representing 0.75-mile by 0.75-mile grids within Montgomery County, Texas. These grids are organized and referenced according to the Key Map Grid Index, with each grid corresponding to a specific location within the county. The grids are assigned unique identifiers combining the index page number and letter, with 24 grids fitting within a single index page. The letters "I" and "O" are excluded to avoid confusion with numbers. The Key Map Grid was created by the Houston Map Company, which covers multiple counties in the Houston metropolitan area including Harris, Fort Bend, Galveston, Brazoria, Liberty, Waller, and Montgomery Counties. More information can be found on the Houston Map Company's website at www.keymaps.com. Data Fields Included: Grid ID: Unique identifier assigned to each grid (combination of index page number and letter) Boundary Polygon: Square representing the 0.75-mile by 0.75-mile gridKey Map Grid（键图网格）数据集包含表征美国得克萨斯州蒙哥马利县（Montgomery County）内0.75英里×0.75英里方形网格的面状要素。此类网格依据《键图网格索引》进行组织与引用，每个网格对应该县内的一处特定区位。网格被分配由索引页码与字母组合而成的唯一标识符，单张索引页可容纳24个网格。为避免与数字产生混淆，字母‘I’与‘O’未被纳入使用范围。本键图网格数据集由休斯顿地图公司（Houston Map Company）制作，其覆盖休斯顿大都会区的多个郡县，包括哈里斯县、本德堡县、加尔维斯顿县、布拉佐里亚县、利伯蒂县、沃勒县以及蒙哥马利县。更多相关信息可访问休斯顿地图公司官网：www.keymaps.com。数据集包含以下数据字段： 网格ID（Grid ID）：分配给每个网格的唯一标识符，由索引页码与字母组合而成 边界多边形（Boundary Polygon）：表征0.75英里×0.75英里网格的正方形面要素