contig | R Documentation |
The function is based on sf package and can be used with a shape file or an R spatial object (class sf, sfc or sfg).
contig(spatobj = NULL, folder = NULL, shape = NULL, queen = FALSE)
spatobj |
a spatial object (class sf, sfc or sfg) containing geographic information |
folder |
a character vector with the folder (directory) name indicating where the shapefile with the geographic information is located. |
shape |
a character vector with the name of the shapefile (without the .shp extension) which contains the geographic information |
queen |
= TRUE for queen criteria, FALSE (by default) for rook criteria |
A first order contiguity (adjacency) matrix, where each element [i,j] equals 1 if i-th and j-th spatial units are adjacent, 0 otherwise (queen or rook criteria)
Other spatial functions used for segregation indices
computation: area
, perimeter
,
distance
, distcenter
,
boundaries
contig(segdata)
foldername <- system.file('extdata', package = 'OasisR')
shapename <- 'segdata'
contig(folder = foldername, shape = shapename)
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