polyline2.svg.scm « images « doc - software/guile-picture-language - Simple SVG-based picture language for Guile. Inspired by the picture language in Racket.

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(import (srfi srfi-1)) ; for iota and list-tabulate

(polyline
 (map cons
      (iota 100 0 10)
      (list-tabulate 100
                     (lambda (n)
                       (+ 100 (* n (expt -1 n)))))))