Split 'Geospatial' Objects into Pieces

Split 'geospatial' objects into pieces. Includes support for some spatial object inputs, 'Well-Known Text', and 'GeoJSON'.


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geoaxe - split geospatial objects into pieces

devtools::install_github("ropenscilabs/geoaxe")
library("geoaxe")
library("sp")

Spatial Polygons and friends input

Works for only SpatialPolygons for now, but aim to include related classes soon.

library("rgeos")
wkt <- "POLYGON((-180 -20, -140 55, 10 0, -140 -60, -180 -20))"
poly <- rgeos::readWKT(wkt)
polys <- chop(x = poly)

Plot original polygon

plot(poly, lwd = 6)

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Add chopped up polygon bits

plot(polys, add = TRUE)

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Well-Known Text input

wkt <- "POLYGON((-180 -20, -140 55, 10 0, -140 -60, -180 -20))"
plot(chop(wkt))

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Manipulate number of cells

layout(matrix(c(1,2,3,4), 2, 2, byrow = TRUE))
par(mar = c(1, 0, 1, 0))
plot(chop(wkt, n = 10))
plot(chop(wkt, n = 15))
plot(chop(wkt, n = 20))
plot(chop(wkt, n = 50))

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Manipulate cell size

plots go left to right, then down, and repeat

layout(matrix(1:8, 4, 2, byrow = TRUE))
par(mar = c(1, 0, 1, 0))
plot(chop(wkt, size = 2))
plot(chop(wkt, size = 4))
plot(chop(wkt, size = 8))
plot(chop(wkt, size = 15))
plot(chop(wkt, size = 25))
plot(chop(wkt, size = 50))
plot(chop(wkt, size = 100))
plot(chop(wkt, size = 200))

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Meta

News

geoaxe 0.1.0

NEW FEATURES

  • Released to CRAN.

Reference manual

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install.packages("geoaxe")

0.1.0 by Scott Chamberlain, 3 years ago


https://github.com/ropenscilabs/geoaxe


Report a bug at https://github.com/ropenscilabs/geoaxe/issues


Browse source code at https://github.com/cran/geoaxe


Authors: Scott Chamberlain [aut, cre]


Documentation:   PDF Manual  


Task views: Analysis of Spatial Data


MIT + file LICENSE license


Imports methods, sp, rgeos, jsonlite

Suggests testthat, knitr


Imported by rgbif.


See at CRAN