mapycusmaximus1.0.7 package

Focus-Glue-Context Fisheye Transformations for Spatial Visualization

classify_zones

Classify Coordinates into Focus, Glue, or Context Zones

create_test_grid

Create a Regular Test Grid of Coordinates

fisheye_fgc

Apply Focus–Glue–Context Fisheye Transformation

lines_from_sf

Extract Line Coordinates from sf Objects

plot_fisheye_fgc

Visualize Focus–Glue–Context (FGC) Fisheye Transformation

points_from_sf

Extract Point Coordinates from sf Objects

polygons_from_sf

Extract Polygon Coordinates from sf Objects

sf_fisheye

Radial fisheye warp for sf/sfc objects (auto-CRS + flexible center...

shiny_fisheye

Launch Interactive Fisheye Lens Explorer

st_transform_custom

Apply a custom coordinate transform to an sf/sfc object (POINT/LINESTR...

Download source packageRead PDF manual

Focus-glue-context (FGC) fisheye transformations to two-dimensional coordinates and spatial vector geometries. Implements a smooth radial distortion that enlarges a focal region, transitions through a glue ring, and preserves outside context. Methods build on generalized fisheye views and focus+context mapping. For more details see Furnas (1986) <doi:10.1145/22339.22342>, Furnas (2006) <doi:10.1145/1124772.1124921> and Yamamoto et al. (2009) <doi:10.1145/1653771.1653788>.

  • Maintainer: Alex Nguyen
  • License: MIT + file LICENSE
  • Last published: 2026-02-06

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