View source: R/coincidence_index.R
Computes the coincidence index (Hamblin and Zimmermann, 1986) as follows:\loadmathjax \mjsdeqn
CI = \fracA-CM-C\times 100 where A is the number of selected genotypes common to different methods; C is the number of expected genotypes selected by chance; and M is the number of genotypes selected according to the selection intensity.
coincidence_index(..., total, sel1 = NULL, sel2 = NULL)
A comma-separated list of objects of class
The total number of genotypes in the study.
The selected genotypes by the method 1 and 2, respectively. Defaults to
A list with the following elements:
coincidence: A data frame with the coincidence index, number of common genotypes and the list of common genotypes for each model combination.
coincidence_mat: A matrix-like containing the coincidence index.
genotypes: The number of common genotypes for all models, i.e., the insersection of the selected genotypes of all models
Hamblin, J., and M.J. de O. Zimmermann. 1986. Breeding Common Bean for Yield in Mixtures. p. 245-272. In Plant Breeding Reviews. John Wiley & Sons, Inc., Hoboken, NJ, USA.doi: 10.1002/9781118061015.ch8
sel1 <- paste("G", 1:30, sep = "") sel2 <- paste("G", 16:45, sep = "") coincidence_index(sel1 = sel1, sel2 = sel2, total = 150)
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