>  obj1 <- read.structure(file='project_data.stru', missing=NA )

 How many genotypes are there? 50

 How many markers are there? 15

 Which column contains labels for genotypes ('0' if absent)? 1

 Which column contains the population factor ('0' if absent)? 2

 Which other optional columns should be read (press 'return' when done)? 1: 

 Which row contains the marker names ('0' if absent)? 1

 Converting data from a STRUCTURE .stru file to a genind object... 

Erreur dans txt[(lastline - n + 1):lastline] : 
  les indices ngatifs ne peuvent tre mlangs qu' des 0
