{
 "culture": "en-US",
 "name": "gpw_v4_national_identifier_grid_rev11",
 "guid": "850C8F60-FBB6-4ACD-BF06-6DEA70C41E3A",
 "catalogPath": "",
 "snippet": "To provide additional context for the population count and density grids and a framework to aggregate population data.",
 "description": "Gridded Population of the World, Version 4 (GPWv4) National Identifier Grid, Revision 11 is a polygon representation of nation-states in GPWv4 for use in aggregating population data. This data set is produced from the input census units and is used to create a raster surface where pixels that cover the same census data source (most often a country or territory) have the same value. The raster was converted to polygon features. Note that these data are not official representations of country boundaries; rather, they represent the area covered by the input data. The files for this data set were produced as global grids at 30 arc-seconds horizontal resolution (approximately 1km at the equator). To enable faster global processing, and in support of research communities, the 30 arc-second data was aggregated to 2.5 arc-minutes, 15 arc-minutes, 30 arc-minutes and 1 degree resolutions.",
 "summary": "To provide additional context for the population count and density grids and a framework to aggregate population data.",
 "title": "Gridded Population of the World, Version 4 (GPWv4): National Identifier Grid - Polygons, Revision 11",
 "tags": [
  "population; gpw-v4-national-identifier-grid-rev11"
 ],
 "type": "Map Service",
 "typeKeywords": [
  "Data",
  "Service",
  "Map Service",
  "ArcGIS Server"
 ],
 "thumbnail": "thumbnail/thumbnail.png",
 "url": "",
 "extent": [
  [
   -180,
   -59.4916666666667
  ],
  [
   180,
   83.6333333333333
  ]
 ],
 "spatialReference": "GCS_WGS_1984",
 "accessInformation": "NASA SEDAC",
 "licenseInfo": "This work is licensed under the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0). Users are free to use, copy, distribute, transmit, and adapt the work for commercial and non-commercial purposes, without restriction, as long as clear attribution of the source is provided."
}