biomart in phytozome

http://www.phytozome.net/biomart/martview/97c819b8e9837aef0c9394175cf1b315

Choropleths 等高线图

1
http://rstats.posterous.com/choropleths-made-easy

2
http://dsparks.wordpress.com/2010/11/15/isarithmic-history-of-the-two-party-vote/

  

3 http://stevemosher.wordpress.com/2010/10/19/more-graphics-with-google-earth/

understanding correlations by two variables' case

In wiki, there is a really nice introduction to correlation. Here I just grab some nice figures here.

http://en.wikipedia.org/wiki/Correlation_and_dependence

1.

2.

3.

Detection of Chromosomal Segments of Distinct Ancestry

Sensitive Detection of Chromosomal Segments of Distinct Ancestry in Admixed Populations

http://www.plosgenetics.org/article/info:doi/10.1371/journal.pgen.1000519

The tools is here:
http://www.hsph.harvard.edu/faculty/alkes-price/software/

New approaches to population stratification

New approaches to population stratification in genome-wide association studies

 http://www.nature.com/nrg/journal/v11/n7/abs/nrg2813.html