genpop objects are created from genind objects using genind2genpop:

here is a sample conversion for genind to genpop using the nancycats data provided in adegenet package

data(nancycats)

catpop <- genind2genpop(nancycats)

#

Converting data from a genind to a genpop object...

#

...done.

catpop

/// GENPOP OBJECT /////////

#

// 17 populations; 9 loci; 108 alleles; size: 28.5 Kb

#

// Basic content

@tab: 17 x 108 matrix of allele counts

@loc.n.all: number of alleles per locus (range: 8-18)

@loc.fac: locus factor for the 108 columns of @tab

@all.names: list of allele names for each locus

@ploidy: ploidy of each individual (range: 2-2)

@type: codom

@call: genind2genpop(x = nancycats)

#

// Optional content

@other: a list containing: xy

catpop$tab[1:5,1:10]