examples/lngamma-plot-example.ss
(require (planet "gamma.ss" ("williams" "science.plt")
                 "special-functions"))
(require (lib "plot.ss" "plot"))

(plot (line lngamma)
      (x-min 0.001) (x-max 6)
      (y-min -1) (y-max 5)
      (title "Log Gamma Function, lngamma(x)"))