Key Map Grid Index

The Key Map Grid Index dataset contains rectangular features representing index pages within Montgomery County, Texas. Each index page is proportioned to fit a letter-sized map and is assigned a unique identifier for reference purposes. This dataset facilitates the organization and retrieval of key map grids, with 24 key map grids fitting within a single index page. The index pages are numbered sequentially, and the key map grids within each index page are lettered accordingly, excluding the letters "I" and "O" to avoid confusion with numbers. The Key Map Grid Index 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: Index Page ID: Unique identifier assigned to each index page Boundary Polygon: Rectangle representing the proportionate index page密钥网格索引数据集（Key Map Grid Index dataset）包含用于表示美国得克萨斯州蒙哥马利县内索引页的矩形地理要素。每张索引页均按比例适配标准信纸幅面，并被分配唯一标识符以供引用。本数据集可助力密钥网格索引的组织与检索，单张索引页可容纳24个密钥网格。索引页按顺序编号，单张索引页内的密钥网格则按字母顺序标注，为避免与数字混淆，排除字母“I”与“O”。该密钥网格索引由休斯顿地图公司（Houston Map Company）制作，覆盖休斯顿都会区的多个县份，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。更多信息可访问休斯顿地图公司官网：www.keymaps.com。包含的数据字段如下： 1. 索引页ID（Index Page ID）：分配给每张索引页的唯一标识符 2. 边界多边形（Boundary Polygon）：代表按比例适配的索引页的矩形要素