to_int_surf: Convert a normal mixture to an intensity surface
In sppmix: Modeling Spatial Poisson and Related Point Processes

Description Usage Arguments Value Author(s) See Also Examples

This function converts a normmix object into an intensity_surface object. It can also be used to change the parameters lambda (average number of points over the window) or win (window of observation) of an intensity_surface object.

For examples see

http://faculty.missouri.edu/~micheasa/sppmix/sppmix_all_examples.html#to_int_surf

If the class of mix is normmix, lambda and win are used to convert mix into an intensity surface class. If the class of mix is intensity_surface already, lambda and win are used to change the original settings for these parameters.

1	to_int_surf(mix, lambda = NULL, win = NULL, return_normmix = FALSE)

`mix`	Object of class `normmix` or `intensity_surface`.
`lambda`	Optional parameter treated as the average number of points over the window.
`win`	Optional parameter of class `owin`, defining the window of observation.
`return_normmix`	Logical variable requesting to return a normal mixture (discard `lambda` and `win`).

Object of class intensity_surface.

Yuchen Wang

normmix, rnormmix, square

truemix <- normmix(ps=c(.4, .2,.4), mus=list(c(0.3, 0.3), c(.5,.5),c(0.7, 0.7)),
 sigmas = list(.02*diag(2), .05*diag(2),.01*diag(2)))
intsurf=to_int_surf(truemix, lambda = 100, win = spatstat::square(1))
#plot the true mixture
plot(intsurf,main = "True Poisson intensity surface (mixture of normal components)")
# using the demo_mix normmix object
summary(demo_mix)
demo_surf1=to_int_surf(demo_mix, lambda = 100, win = spatstat::square(1))
plot(demo_surf1)
# using an intensity_surface object
summary(demo_intsurf)
demo_surf2=to_int_surf(demo_intsurf, win = spatstat::square(2))
summary(demo_surf2)
plot(demo_surf2)
demo_surf3=to_int_surf(demo_intsurf, lambda = 50)
plot(demo_surf3)