| fIsonymy {OnomasticDiversity} | R Documentation |
Calculate the Isonymy within a region
Description
This function obtains the isonymy within a region i which has an associated collection S_i of surnames.
Usage
fIsonymy(x, category)
Arguments
x |
a vector of relative frequency squared for each surname. |
category |
represents the grouping element, for example the regions. |
Details
Isonymy is defined as I_i=\sum\limits_{k\in S_i}p_{ki}^2 where p_{ki} denotes the relative frequency of surname k in region i.
In diversity context, p_{ki} denotes the relative frequency of species k in community (\approx region onomastic context) i and S_i are all species in community i.
Value
A dataframe containing the following components:
category |
represents the grouping element, for example the regions / communities. |
x |
the value of isonymy. |
Author(s)
Maria Jose Ginzo Villamayor
References
Crow J.F. and Mange A.P., (1965). Measurement of inbreeding from the frequency of marriages between persons of the same surname. Eugenics Quarterly, 12(4), 199–203.
Barrai, I., Scapoli, C., Beretta, M., Nesti, C., Mamolini, E., and Rodriguez–Larralde, A., (1996). Isonymy and the genetic structure of Switzerland. I: The distributions of surnames. Annals of Human Biology, 23, 431–455.
See Also
Examples
data(surnamesgal14)
surnamesgal14$pki2 <- (surnamesgal14$number / surnamesgal14$population)^2
result = fIsonymy(surnamesgal14$pki2, surnamesgal14$namuni)
result
data(namesmengal16)
namesmengal16$pki2 <- (namesmengal16$number / namesmengal16$population)^2
result = fIsonymy(namesmengal16$pki2, namesmengal16$namuni)
result
data(nameswomengal16)
nameswomengal16$pki2 <- (nameswomengal16$number / nameswomengal16$population)^2
result = fIsonymy(nameswomengal16$pki2, nameswomengal16$namuni)
result