Meshblock 1996

Statistics New Zealand maintains an annual meshblock patternfor the collection and production of statistical data, allowing data to be compared over time. A meshblock is the smallest geographic unit used by Statistics New Zealand for which statistical data is collected and processed by statistics New Zealand. A meshblock is defined by a geographic area, varying in size from a part of a city block to large areas of rural area. Each meshblock abuts against another to form a network covering all of New Zealand, including coasts and inlets and extending out to the 200 mile economic zone. Meshblocks are added together to build up lager geographic areas such as area units and urban areas. They are also the principal unit to draw and define electoral districts, territorial authorities and regional councils. Meshblocks are allocated a unique seven-digit number. The first 5 digits are unique, and refer to the original 1976 meshblock code. The two end numbers refer to sequential meshblock splits to the original meshblock. When a meshblock is split the final two digits of the original meshblock number are changed. Exceptions to this rule are a small number of meshblocks where there are no more numbers in the sequence are available. There are therefore some meshblocks in Auckland and Tauranga City starting with 32xxxxx. Statistics New Zealand maintains a concordance file to ensure that boundaries relating to earlier meshblock patterns can also be generated.The dataset is intended for use in the display and presentation of statistical and other data to show areas of high or low density and distributions for comparative purposes over time. The digital boundaries are defined by Statistics New Zealand. They are maintained on behalf of Statistics New Zealand by Land Information New Zealand in Landonline using ArcInfo.Meshblocks cover the land area of New Zealand, the water area to the 12 mile limit, Chatham Islands, the Kermadec Islands, off-shore oil rigs, Ross Dependency and extend to the 200 mile economic zone. The meshblocks for the last four mentioned areas have not been digitised. The 12 mile limit is digitised.Meshblock boundaries generally follow street centre-lines, cadastral property boundaries or topographical features (eg rivers). Expanses of water in the form of lakes and inlets are defined separately from land.The annual pattern of digital boundaries is used for the full calendar year from 1 January and applies to the timing of the survey –not necessarily when the data is processed. Digital Boundary data became freely available on 1stJuly 2007.新西兰统计局（Statistics New Zealand）维护一套年度统计网格块（meshblock）标准体系，用于统计数据的采集与编制，以支持不同时期的数据对比分析。统计网格块是新西兰统计局开展统计数据采集与处理工作所使用的最小地理单元，由特定地理区域划定，面积跨度极大，小至城市街区的局部，大至大片乡村区域。所有统计网格块彼此邻接，形成覆盖新西兰全境的空间网络，涵盖海岸、海湾，并延伸至200海里经济专属区。多个统计网格块可合并为更大的地理单元，如区域单元与城市区域；同时，统计网格块也是划定选举选区、地方行政辖区与地区议会管辖范围的核心基础单元。统计网格块均分配有唯一的7位编号，其中前5位为全局唯一编码，对应1976年版原始网格块编码；末尾两位则代表该原始网格块的连续拆分序列。当网格块发生拆分时，其原有编号的末尾两位数字将被更新。该规则存在少量例外：当序列中无可用编号时便会出现此类情况，因此奥克兰与陶朗加市存在部分以32开头的7位编号网格块（格式为32xxxxx）。新西兰统计局维护有一套一致性对照文件（concordance file），以确保可生成与早期统计网格块标准体系相关的边界数据。本数据集旨在用于展示统计数据及其他相关数据，以呈现区域密度高低分布情况，用于跨时期的对比分析。该数字边界由新西兰统计局划定，并由新西兰土地信息局（Land Information New Zealand）依托ArcInfo软件在Landonline平台代为维护。统计网格块覆盖新西兰陆地面积、12海里范围内的水域、查塔姆群岛、克马德克群岛、海上石油钻井平台以及罗斯属地，并延伸至200海里经济专属区。其中上述最后提及的四类区域的网格块尚未完成数字化，而12海里范围水域的网格块已完成数字化。统计网格块的边界通常遵循街道中心线、地籍产权边界或地形特征（如河流）；湖泊、海湾等大片水域的边界与陆地边界分别划定。年度数字边界标准体系自每年1月1日起适用于完整自然年，其适用时间以调查开展时间为准，而非数据处理时间。该数字边界数据集已于2007年7月1日正式免费对外开放。