mAdjacency: Adjacency of cells
In EhrmannS/rasterTools: Obtain and process earth observation data

Description Usage Arguments Details Value See Also Examples

Calculate the cell-adjacency matrix for a raster

1	mAdjacency(obj, type = "like", count = "double", layer = NULL)

`obj`	[`Raster*(1)`] The object to measure.
`type`	[`character(1)`] which type of adjacencies to calculate; either `"like"` adjacencies between cells of the same value, adjacencies between `"paired"` values or the rowsum of the paired values (`"pairedSum"`).
`count`	[`character(1)`] the cells that should be counted; possible values are `"single"` to count only cells to the right and bottom of the focal cell and `"double"` to count additionally cells to the left and top of the focal cell.
`layer`	[`character(1)`] in case `obj` has several layers, specify here the layer for which the adjacency shall be calculated (by default, the first layer).

In case type = "like", only the diagonal of the adjacency matrix is returned, in case type = "paired", the complete adjacency matrix is returned.

a data.frame of the frequency of adjacencies of the values in obj.

Other generic metrics: mArea, mNumber, mPerimeter, mValues

cat <- rtRasters$categorical
bin <- rBinarise(rtRasters$continuous, thresh = 40)

# double count like adjacencies
mAdjacency(obj = cat)

# paired adjacencies
mAdjacency(obj = cat, type = "paired")

# adjacencies with single count
mAdjacency(obj = bin, count = "single")