forensim (version 1.1-4)

DNAproxy: Approximation of the amount of DNA contributed by a person based on the observed peak heights of the alleles present in the analyzed sample

Description

DNAproxy gives an estimation of the amount of DNA contributed by a person to a DNA stain based on the observed peak heights of the present alleles. The estimation is performed using data across all available loci, data can either consist of single-contributor or mixed DNA stains. The computation of the DNA proxies from experimental data are described by Tvedebrink et al. (cf. the references sections).

Usage

DNAproxy(tab, x)

Arguments

tab

a table produced by the recordDrop function, giving the allelic dropouts observations and the corresponding allelic peak heights

x

a character giving the label of the individual for whom the DNA proxy must be specified, this argument is to be specified only when data in tab is made of mixtures. In case data is consist of single-contributor stains, the argument must be l

References

Tvedebrink T, Eriksen PS, Mogensen HS, Morling N. Estimating the probability of allelic drop-out of STR alleles in forensic genetics. Forensic Science International: Genetics, 2009, 3(4), 222-226.

See Also

recordDrop, tabDNAproxy

Examples

#load the exemple data
data(dropdata)
tabcsv<-dropdata$tabcsv
genot<-dropdata$genot
#individuals' labels are 1 and 2
#DNA proxy for individual one, when data is composed of a 2-person mixture
DNAproxy(recordDrop(1,2,geno=genot,tabcsv=tabcsv),"c1")