GHS-POPWARP User Guide
Volume preserving Population Warp User Guide Version 3
Changing the coordinate system of grids storing population counts is typically a challenging task, due to the need to keep the population totals unchanged (i.e. volume preservation).
The Population Warp tool (GHS-POPWARP) version 3, is an information system developed in the framework of the Global Human Settlement Layer (GHSL) project to convert geospatial raster grids of population counts between different map projections and/or spatial resolutions, while preserving population volumes.
The GHS-POPWARP v3 is a flexible tool to produce geospatial population counts grids in GeoTIFF format starting from another grid in a different coordinate system and/or resolution (i.e. cell size). The principal purpose of the tool is to expand the interoperability of GHSL tools which require population grid data as input or to simplify the warping of population grids for users less familiar with geospatial processing.
The tool is offered as a contribution to capacity enhancement in the framework of the multi-stakeholder effort for the uptake of the Degree of Urbanisation (DEGURBA) classification method. Degree of Urbanisation refers to the people-based harmonised definition of cities and settlements recommended by the 51st Session of the United Nations Statistical Commission as the methodology to delineate cities and rural areas for international statistical comparison. The GHS-POPWARP, as all GHSL tools, is issued with an end-user licence agreement, included in the download package.
MAFFENINI Luca;
SCHIAVINA Marcello;
CARNEIRO FREIRE Sergio Manuel;
MELCHIORRI Michele;
KEMPER Thomas;
2023-02-22
Publications Office of the European Union
JRC132758
978-92-76-99893-8 (online),
978-92-76-99894-5 (print),
OP KJ-07-23-087-EN-N (online),
OP KJ-07-23-087-EN-C (print),
https://publications.jrc.ec.europa.eu/repository/handle/JRC132758,
10.2760/24288 (online),
10.2760/3107 (print),
Additional supporting files
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