I have sequenced a bacterial genome. I want to use a venn digram comparing it to two other already sequenced genomes. Something like this: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2953697/figure/f2/
However I am unsure how to go about it. Should I used my genome as a blast db then blast the two known genomes against this? If so do I then take the genes p resent and absent in both known genomes and blast them against each other?