Global Rural-Urban Mapping Project, Version 1 (GRUMPv1): National Identifier Grid

The Global Rural-Urban Mapping Project, Version 1 (GRUMPv1): National Identifier Grid is derived from the land area grid to create a raster surface where pixels (cells) that cover the same nation or territory have the same value. The countries and territories are not official representations of country boundaries; rather they represent the area covered by the statistical data as provided. This data set is produced by the Columbia University Center for International Earth Science Information Network (CIESIN) in collaboration with the International Food Policy Research Institute (IFPRI), The World Bank, and Centro Internacional de Agricultura Tropical (CIAT).

全球城乡映射项目，第一版（GRUMPv1）：国家标识网格，由土地面积网格派生而来，构建了一个栅格表面，其中覆盖同一国家或地区的像素（单元格）具有相同的数值。这些国家和地区的划分并非官方的国界表示，而是代表所提供统计数据所覆盖的区域。该数据集由哥伦比亚大学国际地球科学信息网络中心（CIESIN）与国际粮食政策研究所（IFPRI）、世界银行以及国际热带农业研究中心（CIAT）合作制作。