Stratification input form


The data we need to work out with should be in a compressed archive containing two (a ped and a map) files.
Babelomics can read .zip, .gz and .tar.gz files but needs to be able to uncompressed data without finding any folder structure.

There are two ways to choose data, one selecting from the browse server where one should have previously uploaded data, or secondly, directly uploading data clicking on the Upload [genotype] label and then selecting the data from its computer.


(Optional) Mark the first option if you check group differences in this metric with respect to a binary phenotype.

To set up the values of the following options:

  • Pairwise population concordance (PPC): this is a simple significance test for whether two individuals belong to the same random-mating population. To only merge clusters that do not contain individuals differing at a certain p-value (0.0001 by default).
  • Maximum cluster size: to set the maximum number of clusters to a certain value, so that to stratify the population in many groups (enter 0 to not apply).


  • Job name. Give a short name to your analysis job
  • Job description. You can use this section to document further the characteristics of this analysis

Its aim is to help you identifying the analysis you are running and distinguishing between several analysis.
To set the name is mandatory but you can leave the description empty if you do not want to use it.


Once all options are set you can run the job. You may get some error message if some parameters are not properly set. If you do, just check the options you have chosen.

See Output form section for details on the result data format and plots.