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Population pyramid

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Population density

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The WorldPop Data Portal allows users to query and download rasters produced by the WorldPop research group. The tool allows the delineation of areas to query, returning zonal statistics. The size of the query area is limited to 100,000km2. Should you wish to download national-level data, please visit the WorldPop data repository. Please see below for portal data availability and specific instructions.

Background

Global High Resolution Population Denominators Project – Funded by The Bill and Melinda Gates Foundation (OPP1134076). The dataset is available to download in Geotiff format at a resolution of 3 arc (approximately 100m at the equator). The projection is Geographic Coordinate System, WGS83. The units are number of people per pixel. The mapping approach is Random Forest-based dasymetric redistribution

Instructions
  1. Select from the a control panel
  2. Choose the year of the population dataset to query:
    • The raster is displayed on the map
    • Scroll through the menu to visualise different years
    • Should you wish to see the data combined with an OSM labelled map, click the icon and activate the OpenStreetMap and/or Esri WorldImagery layers. The opacity of these layers can be adjusted best visualise an area of interest
    • The map can be zoomed using the mouse scroll-wheel or the +/- icon on the map. Specific countries can be zoomed to by clicking the , and selecting a country from the dropdown.
      By clicking the Show population history option, the selected country’s population totals from 2000 – 2020 are displayed
  3. Click the icon to define your area of interest
    • A shape can be defined using the drawing tools on the Draw shape tab
    • To define a shape using a file, click on the Upload file tab and upload your file. This portal only accepts .geojson files or ESRI shapefiles. If uploading a shapefile, the .shp and the .prj files should be compressed together in a single .zip file and uploaded.
    • c. Click the submit button (on the Draw shape tab) to send data for analysis
  4. 4. The zonal statistics will be returned as a pop-up attached to the shape that was defined on the map. The raster can be downloaded by clicking on the Download raster button in the popup


Contact Us

We value all kinds of feedback on the data and methods produced by WorldPop. We know that our datasets are far from perfect and actively invite you to let us know where you see errors, and to provide suggestions on alternative data that can help us correct or improve our outputs. We regularly update our output products when new and improved datasets become available, but cannot keep track of all useful data, so rely on feedback from users to keep improving our outputs. In addition, we are always interested to hear about your case studies and how you are using the data, so please feel free to share these with us and we will profile these on the webpage.


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The spatial distribution of population in 2000, Algeria

Estimated total number of people per grid-cell. The dataset is available to download in Geotiff format at a resolution of 3 arc (approximately 100m at the equator). The projection is Geographic Coordinate System, WGS84. The units are number of people per pixel. The mapping approach is Random Forest-based dasymetric redistribution.

10.5258/SOTON/WP00645

Download Entire Dataset / 1.0009 GB

Recommended citation:
WorldPop (www.worldpop.org - School of Geography and Environmental Science, University of Southampton; Department of Geography and Geosciences, University of Louisville; Departement de Geographie, Universite de Namur) and Center for International Earth Science Information Network (CIESIN), Columbia University (2018). Global High Resolution Population Denominators Project - Funded by The Bill and Melinda Gates Foundation (OPP1134076). https://dx.doi.org/10.5258/SOTON/WP00645

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