The nuccore.go program collates the lengths of sequences in the Entrez nuccore database and sends the results to the public.opencpu.org server to calculate summary statistics and plot a density distribution. Nearly all the computation is performed by the Entrez and opencpu servers instead of by the client program.
$ go run nuccore.go -png plot.png -email email@example.com
Summary statistics for genome study-associated nuccore sequence lengths:
Min. 1st Qu. Median Mean 3rd Qu. Max.
11.0 282.0 725.5 1556.6 1713.8 155844.0
$ eog plot.png