Pyxplot 
Examples  Density of primes 
Example plot  the density of prime numbers This plot illustrates the prime number theorem, which states that the density of prime numbers approximately follows the expression 1/ln(N). Script# Make temporary datafile listing prime numbers set samp 10200 set output 'temp.dat' tabulate [1:10200] x*prime(x) histogram f() 'temp.dat' using 2 binwidth 100 set output 'output.eps' set samples 1000 set width 8 plot [5:10000][0.05:0.25] f(x), 1/ln(x)
