file format : GeoTIFF File Format file title : pcpopd2 last update : 8-March-2010 producer : T. Hengl lineage : http://spatial-analyst.net/scripts/getGPW.R data type : byte file type : GTiff columns : 7200 rows : 3600 meas. scale : numeric description : Population change index (PC2) proj4string : +proj=longlat +ellps=WGS84 ref. system : geographic ref. units : arcdegrees unit dist. : 1 min. X : -180 max. X : 180 min. Y : -90 max. Y : 90 pos'n error : 1000 resolution : 0.05 min. value : -31554 max. value : 37343 display min : -123 display max : 121 value units : index value error : unspecified flag value : -9999 flag def'n : unavailable data src. Eng : Gridded Population of the World, version 3 (GPWv3) src. URL : http://sedac.ciesin.columbia.edu/gpw src. scale : 1 km src. refs : Center for International Earth Science Information Network (CIESIN), Columbia University; United Nations Food and Agriculture Programme (FAO); and Centro Internacional de Agricultura Tropical (CIAT). 2005. Gridded Population of the World: Future Estimates (GPWFE). Palisades, NY: Socioeconomic Data and Applications Center (SEDAC), Columbia University. Available at http://sedac.ciesin.columbia.edu/gpw. src. date : 1990–2015 src. owner : Columbia University in the City of New York, United Nations Food and Agriculture Programme (FAO), and the Centro Internacional de Agricultura Tropical (CIAT) legend cats : 0