Usage
minimum.contrast(data, model, method = "g", intens = NULL, power = 1,
transform = NULL, startvals = NULL, verbose = TRUE, ...)
Arguments
data
An object of class 'ppp' (package spatstat) with a polygonal window. May be univariate or multitype.
model
Assumed theoretical form of the spatial correlation function. Matches 'model' argument for 'CovarianceFct' in package RandomFields.
method
Character string indicating which version of spatial minimum contrast to use: either "K" or "g".
intens
Underlying deterministic spatial intensity. A single function f(x,y) or a single pixel image if univariate, a list of these objects if point pattern is multitype (order must correspond to order of ppp marks).
power
Power to raise the functions to in the contrast criterion. Default 1.
transform
Transformation to apply to the functions in the contrast criterion. Default no transformation.
startvals
Starting values for 'optim' in minimising the contrast criterion in the order c(phi,sigma2). A list of these if multitype. If NULL, the function automatically attempts to find suitable starting values, though no guarantee of 'optim' convergence can be giv
verbose
Boolean. Whether or not to print function progress.
...
Additional arguments to be passed to 'param' in evaluation of 'CovarianceFct' (need dependent upon 'model').