---
title: "Chaos Program #2 from Scientific American"
type: "article"
slug: "chaos-program-2-from-scientific-american"
url: "http://localhost/article/chaos-program-2-from-scientific-american/"
markdown_url: "http://localhost/article/chaos-program-2-from-scientific-american.md"
published_at: "2026-03-15T00:40:43+00:00"
modified_at: "2026-03-15T00:40:43+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "Second QL chaos program adapted from Scientific American, implementing a chaotic attractor with parameters a=2.24, b=0.43, c=-0.85, d=3.4. Colors plotted points based on distance moved between iterations (INK 7, 5, or 3 depending on distance thresholds). Uses POINT in a SCALE coordinate system with repeating REPEAT loop. Full SuperBASIC listing provided."
category:
  - name: "Timelinez"
    slug: "timelinez"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/timelinez/"
post_tag:
  - name: "QL"
    slug: "ql"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ql/"
  - name: "Superbasic (programming language)"
    slug: "superbasic-programming-language"
    taxonomy: "post_tag"
    url: "http://localhost/tag/superbasic-programming-language/"
  - name: "Type-in program"
    slug: "type-in-program"
    taxonomy: "post_tag"
    url: "http://localhost/tag/type-in-program/"
model:
  - name: "Sinclair QL"
    slug: "sinclair-ql"
    taxonomy: "model"
    url: "http://localhost/model/sinclair-ql/"
indiv:
  - name: "Mark Wahl"
    slug: "mark-wahl"
    taxonomy: "indiv"
    url: "http://localhost/indiv/mark-wahl/"
publication_r:
  id: 21571
  title: "Timelinez"
  type: "periodical"
  url: "http://localhost/periodical/timelinez/"
authors_r:
  - name: "Mark Wahl"
    slug: "mark-wahl"
    taxonomy: "indiv"
    url: "http://localhost/indiv/mark-wahl/"
volume: "7"
issue: "12"
issues_articles:
  - id: 38873
    title: "Timelinez v7 n7-12"
    type: "issue"
    url: "http://localhost/issue/timelinez-v7-n7-12/"
pages: "10"
pubdate: "July-December 1989"
archive_link: false
---

# Chaos Program #2 from Scientific American

Second QL chaos program adapted from Scientific American, implementing a chaotic attractor with parameters a=2.24, b=0.43, c=-0.85, d=3.4. Colors plotted points based on distance moved between iterations (INK 7, 5, or 3 depending on distance thresholds). Uses POINT in a SCALE coordinate system with repeating REPEAT loop. Full SuperBASIC listing provided.