コロンビア大学国際地球科学情報ネットワーク センター(CIESIN)。2018 年。Gridded Population of the World, Version 4(GPWv4): Population Count, Revision 11。Palisades, NY: NASA Socioeconomic Data and Applications Center(SEDAC)。https://doi.org/10.7927/H4JW8BX5。Accessed DAY MONTH YEAR.
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["必要な情報がない","missingTheInformationINeed","thumb-down"],["複雑すぎる / 手順が多すぎる","tooComplicatedTooManySteps","thumb-down"],["最新ではない","outOfDate","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["サンプル / コードに問題がある","samplesCodeIssue","thumb-down"],["その他","otherDown","thumb-down"]],[],[[["\u003cp\u003eThe Gridded Population of the World Version 4 (GPWv4), Revision 11 dataset provides estimates of the human population distributed across the globe on a 30 arc-second grid for the years 2000, 2005, 2010, 2015, and 2020.\u003c/p\u003e\n"],["\u003cp\u003ePopulation counts are modeled based on national censuses and population registers, using proportional allocation to distribute population within grid cells.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is available from NASA's Socioeconomic Data and Applications Center (SEDAC) and is accessible through Google Earth Engine.\u003c/p\u003e\n"],["\u003cp\u003eIt's important to note that zooming out on this dataset in Earth Engine can lead to information loss due to the dataset's pyramid policy of MEAN, so calculations should be done at native resolution.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is licensed under CC-BY-4.0 and requires attribution to CIESIN - Columbia University.\u003c/p\u003e\n"]]],["The dataset from NASA SEDAC, accessible via Earth Engine, provides gridded population data (GPWv4) from 2000 to 2020, updated every five years. It estimates the number of people per 30 arc-second grid cell (approximately 1km) using census and population registers. The `population_count` band represents the estimated number of persons per grid cell, with a pixel size of 927.67 meters. Data is distributed proportionally from census units, extrapolated for modeled years. The data should be calculated at its native resolution due to the data model.\n"],null,[]]