gridmappr: An R package for creating small multiple gridmap layouts

Roger Beecham, Martijn Tennekes and Jo Wood

Environment and Planning B, 2026, vol. 53, issue 3, 487-493

Abstract: We present gridmappr , an R package that automates the process of generating gridmaps – small multiple data graphics of regular size, laid out with an approximate geographic arrangement. Given a set of real geographic point locations, gridmappr allocates points to a regularly sized grid of stated row–column dimensions. This allocation is constrained such that the distance between points in real and grid space is minimised and with a parameter that affects how compactly points are allocated to the regular grid. For geographies with features such as large bodies of water, fixed spacers can be introduced – reserved cells that cannot be allocated points. Layout examples are presented using different parameterisations, and code for generating a family of information-rich glyphmap and origin-destination maps is demonstrated using standard ggplot2.

Keywords: geovisualisation; gridmaps; cartograms; origin-destination; grammar of graphics (search for similar items in EconPapers)
Date: 2026
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Persistent link: https://EconPapers.repec.org/RePEc:sae:envirb:v:53:y:2026:i:3:p:487-493

DOI: 10.1177/23998083251374737

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