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Service 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.
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Description:
Copyright Text: NASA SEDAC
Spatial Reference:
4326
(4326)
Single Fused Map Cache: false
Initial Extent:
XMin: -270.18126888217535
YMin: -69.88082829808666
XMax: 270.18126888217535
YMax: 215.2551233635449
Spatial Reference:
4326
(4326)
Full Extent:
XMin: -180
YMin: -59.49166666666666
XMax: 180.00000000000009
YMax: 83.6333333333333
Spatial Reference:
4326
(4326)
Units: esriDecimalDegrees
Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP
Document Info:
Title: Gridded Population of the World, Version 4 (GPWv4): National Identifier Grid - Polygons, Revision 11
Author: Center for International Earth Science Information Network - CIESIN - Columbia University
Comments: 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.
Subject: To provide additional context for the population count and density grids and a framework to aggregate population data.
Category:
Keywords: population; gpw-v4-national-identifier-grid-rev11
AntialiasingMode: None
TextAntialiasingMode: Force
Supports Dynamic Layers: true
MaxRecordCount: 1000
MaxImageHeight: 4096
MaxImageWidth: 4096
Supported Query Formats: JSON, AMF, geoJSON
Min Scale: 0
Max Scale: 0
Supports Datum Transformation: true
Child Resources:
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