Spatial binary operations — spatial_binary

Perform geometric binary operations on Giotto spatial classes (giottoPolygon, giottoPoints and spatLocsObj) and underlying representations (only terra SpatVector right now.)

Usage

# S4 methods for giottoPolygon, giottoPoints, spatLocsObj, SpatVector #

# S4 method for class 'spatialClasses,spatialClasses'
erase(x, y, ...)

# S4 method for class 'giottoSpatial'
snap(x, y = NULL, tolerance, ...)

# S4 method for class 'spatialClasses,spatialClasses'
symdif(x, y, ...)

# S4 method for class 'spatialClasses,spatialClasses'
union(x, y)

# S4 method for class 'spatialClasses,spatialClasses'
intersect(x, y)

Arguments

x: spatial object 1
y: spatial object 2 (can be missing or NULL)
...: additional args to pass
tolerance: numeric. Snapping tolerance (distance between geometries)

Value

The same class as x

Examples

gpoly1 <- GiottoData::loadSubObjectMini("giottoPolygon")
epoly <- as.polygons(ext(c(6600, 6800, -5000, -4800)))
gpoly2 <- spatShift(gpoly1, dx = 20)

plot(gpoly1)

plot(union(gpoly1, gpoly2))

plot(erase(gpoly1, epoly))


plot(union(gpoly1, epoly))


plot(symdif(gpoly1, epoly))


plot(intersect(gpoly1, epoly))


if (FALSE) {
    # takes a long time so don't run in checks
    plot(snap(gpoly1, tolerance = 0.2))
}