is a program for inferring population structure from genetic data
assumming that the sampled loci are in linkage equilibrium and that the
allele frequencies for each population are drawn from a Dirichlet probability
number of populations may be fixed, or it can be treated as a random variable following
a Dirichlet process prior, in which case
the program can estimate the number of
populations. Markov chain Monte Carlo (MCMC) is
used to approximate the posterior probability that individuals are assigned to
specific populations. Structurama implements a number of methods for summarizing the
results of a Bayesian MCMC analysis of population structure. Perhaps most interestingly,
the program finds the mean partition, a partitioning of individuals among populations
that minimizes the squared distance to the sampled partitions. For more information
about the program
Home Page for more information. Please note: the version
of the program installed on our clusters is older then version 2
described on the program's page.
You will need to upload an input file containing (besides the actual input data)
the structurama control block, enclosed between the statements
begin structurama; and end;. If the control block contains the
keyword summarize, but not the keyword mcmc (i.e., when the program
is asked to analyze data from previous MCMC run rather than to perform a new MCMC
simulation), you will also need to upload an MCMC results file from a previous
simulation. Description of Structurama control options can be found
here. Please note:
options described on STRUCTURAMA home page pertain to a newer version of the program
and some of them may not work with the version running on our clusters.
Calculations will be carried out on the BioHPC compute cluster at CBSU. You will receive e-mail notifications when the job is submitted, when it starts, and when it is finished. Output will be available via links embedded in the notification e-mails. For more information about this program and BioHPC interface in general, please visit our Frequently Asked Questions page.
(will be set to the name of input file))
Upload input file
No format checks of your input file will be carried out. For more
information on input file format click
Upload MCMC result file (optional)
The name of this file must be given as parameter sumfile
in the Structurama control
block in the input file.
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or you are not authorized to use the service.
The service is available only to Cornell students, faculty, and staff.
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