check_det_hrz_input {highriskzone}

Checks the arguments of det_hrz

Description

For each argument it is checked if it is of a correct value or class.

Usage

check_det_hrz_input(
  ppdata,
  type,
  criterion,
  cutoff,
  distancemap,
  intens,
  nxprob,
  covmatrix
)

Arguments

ppdata

Observed spatial point process of class ppp.

type

Method to use, can be one of "dist" (method of fixed radius or quantile-based method), or "intens" (intensity-based method)

criterion

criterion to limit the high-risk zone, can be one of "area" (giving size of hrz), "indirect" (giving quantile/alpha depending on type), or "direct" (giving radius/threshold c depending on type)

cutoff

Value of criterion (area, radius, quantile, alpha or threshold). Depending on criterion and type: If criterion = "direct" and type = "intens", cutoff is the maximum intensity of unexploded bombs outside the risk zone. If type = "dist" instead, cutoff is the radius of the circle around each exploded bomb. "If criterion = "indirect", cutoff is the quantile for the quantile-based method and the failure probability alpha for the intensity-base method. If criterion = "area", cutoff is the area the high-risk zone should have.

distancemap

(optional) distance map: distance of every pixel to the nearest observation of the point pattern; only needed for type="dist". If not given, it will be computed by distmap.

intens

(optional) estimated intensity of the observed process (object of class "im"), only needed for type="intens". If not given, it will be estimated using density.ppp.

nxprob

Probability of having unobserved events. Default value is 0.1.

covmatrix

(optional) Covariance matrix of the kernel of a normal distribution, only needed for type="intens" if no intensity is given. If not given, it will be estimated using Hscv.

See Also

det_hrz