Global National Administrative Boundaries from GRUMPv1

2000-era global vector data representing national and territorial administrative boundaries derived from the GRUMPv1 land area grid. The dataset was produced by Columbia University's CIESIN in collaboration with IFPRI, The World Bank, and CIAT. It provides rectilinear polygon outlines based on pixel coverage for statistical data representation.

Use Cases

• Creating a global base map for visualizing country-level demographic statistics by joining data using the polygon attributes.
• Analyzing the spatial relationship between administrative units and other GRUMPv1 raster layers, such as population density or urban extents.
• Performing zonal statistics to aggregate pixel-based data within these national boundary polygons.
• Studying the rectilinear, grid-cell derived nature of administrative boundaries for methodological comparisons with vector-based datasets.

Strengths

• Global spatial coverage of countries and territories.
• Derived from the standardized GRUMPv1 land area grid, ensuring consistency with related project datasets.
• Produced by a collaboration of authoritative institutions including Columbia University CIESIN and The World Bank.

Limitations

• Boundaries are rectilinear and derived from pixels, not official smooth vector representations.
• Data is from 2000 and may not reflect contemporary geopolitical changes.
• Specific row counts, column details, and sample sizes are unknown.

Provenance

Source

Columbia University Center for International Earth Science Information Network (CIESIN), International Food Policy Research Institute (IFPRI), The World Bank, Centro Internacional de Agricultura Tropical (CIAT).

Collection Method

Derived from the GRUMPv1 land area grid pixels, converted to polygons on a per-country/territory basis.

Time Range

Circa 2000.

Freshness

Last updated in July 2000; static snapshot.

Geography

Global.