ki: Computes Kinship Indices (KIs) for pairs of profiles
In DNAprofiles: DNA Profiling Evidence Analysis

Description Usage Arguments See Also Examples

Computes Kinship Indices (KIs) for pairs of profiles

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ki(x1, x2, hyp.1, hyp.2 = "UN", freqs = get.freqs(x1),
  markers = intersect(get.markers(x1), get.markers(x2)), theta = 0,
  ret.per.marker = FALSE)

`x1`	An integer matrix with N profiles.
`x2`	An integer matrix with N profiles.
`hyp.1`	A character vector giving the hypothesis in the numerator of the KI. Should be one of ibdprobs, e.g. "FS" (full sibling) or "PO" (parent/offspring) or "UN" (unrelated).
`hyp.2`	A character vector giving the hypothesis in the denominator of the KI. Should be one of ibdprobs, e.g. "FS" (full sibling) or "PO" (parent/offspring) or "UN" (unrelated). Defaults to "UN".
`freqs`	A list specifying the allelic frequencies. Should contain a vector of allelic frequencies for each marker, named after that marker.
`markers`	Character vector stating the markers to use in the KI computation. Defaults to the intersection of the markers of `x1` and `x2`.
`theta`	Numeric value specifying the amount of background relatedness.
`ret.per.marker`	Logical. If TRUE, return a matrix of KIs, where the columns correspond to markers.

ibs.pairs

data(freqsNLngm)
fr <- freqsNLngm
sibs1 <- sample.profiles(1e3,fr) # sample profiles
sibs2 <- sample.relatives(sibs1,1,type="FS",freqs=fr) #sample 1 sib for each profile
#compute ki for all pairs
ki(sibs1,sibs2,hyp.1="FS",hyp.2="UN")