library(spatstat)
data(meuse)
coordinates(meuse) = ~x+y
zn1 <- as(meuse["zinc"], "ppp")
zn1
plot(zn1)
as(as(meuse, "SpatialPoints"), "ppp")
data(meuse.grid)
gridded(meuse.grid) = ~x+y
mg_owin <- as(meuse.grid, "owin")
zn1a <- ppp(x=zn1$x, y=zn1$y, marks=zn1$marks, window=mg_owin)
zn1a
plot(zn1a)
# as.owin(meuse.grid)
# --- will only work if as.owin is method...
as(as(meuse.grid["ffreq"], "SpatialPixelsDataFrame"), "owin")
ho_sp <- SpatialPolygons(list(Polygons(list(Polygon(cbind(c(0,1,1,0,0),
c(0,0,1,1,0))), Polygon(cbind(c(0.6,0.4,0.4,0.6,0.6),
c(0.2,0.2,0.4,0.4,0.2)), hole=TRUE)), ID="ho")))
plot(ho_sp, col="red", pbg="pink")
ho <- as(ho_sp, "owin")
plot(ho)
pp <- runifpoint(500, win=ho)
plot(pp)
ho_orig <- owin(poly=list(list(x=c(0,1,1,0), y=c(0,0,1,1)),
list(x=c(0.6,0.4,0.4,0.6), y=c(0.2,0.2,0.4,0.4))))
identical(ho, ho_orig)Run the code above in your browser using DataCamp Workspace