Dear all, I have to draw the complete pedigree of a high number (>40) of dogs in a study regarding genetic diseases, so I started drawing the pedigree using the R package kinship2.

The problem is there are many common ancestors between the tested animals, and as soon as I add the grand-parents of the subjects the tree gets all "scrambled up", with dashed lines connecting the same individual present more than once in the pedigree and drawn in different spots of the tree. I know that human genealogic trees are usually far more simple than this scenario and this package should work at best.

Manually adjusting the branches to avoid subjects duplication is quite hard to do, so I was wondering if there is an easier way using a different software (possibly free) or a different R package best suited for complex animal pedigrees.

Thank you,

Riccardo

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