Oberon Ohana
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logicalmap.org
Oberon Ohana
@logicalmap.org
2 followers 3 following 51 posts
Author of Logical Map
ORCID: https://orcid.org/0009-0001-9575-0642
All software released to the public domain, CC0
📐 https://logicalmap.org
💾 https://floppypng.com
✍️ https://sysadmintools.com
📙 https://orng.org

"Thou didst not see what I saw, Robin"
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logicalmap.org
#CharlesBabbage #AdaLovelace
Ada Lovelace wrote this about Charles Babbage’s computer in 1843: “The Analytical Engine has no pretensions whatever to originate any thing. It can do whatever we know how to order it to perform. It can follow analysis; but it has no power of anticipating any analytical relations or truths. Its province is to assist us in making available what we are already acquainted with. This it is calculated to effect primarily and chiefly of course, through its executive faculties; but it is likely to exert an indirect and reciprocal influence on science itself in another manner. For, in so distributing and combining the truths and the formula of analysis, that they may become most easily and rapidly amenable to the mechanical combinations of the engine, the relations and the nature of many subjects in that science are necessarily thrown into new lights, and more profoundly investigated.” ~Ada Lovelace, Note G, p. 722,Scientific Memoirs, Selections from The Transactions of Foreign Academies and Learned Societies and from Foreign Journals, edited by Richard Taylor, F.S.A.,Vol III London: 1843, Article XXIX. Sketch of the Analytical Engine invented by Charles Babbage Esq. By L. F. Menabrea, of Turin, Officer of the Military Engineers. [From the Bibliothque Universelle de Gnve, No. 82 October 1842].
January 25, 2026 at 5:38 PM
logicalmap.org
I got the toolchain working from Markdown to PDF & HTML using #pandoc . I'm OCD about them looking the same. This doc is easy to add as I go along... and my-o-my, there is a lot of detail to lay down.
The image displays two side-by-side views of a document titled "Logical Map Technical Reference" by Oberon Ohana (dated 2026-01-22). On the left, a PDF viewer shows the document with sections: "Overview" followed by "I cover the design and operation of Logical Map and related systems in detail," "Table of Contents" listing "Floppy PNG" and "QuickJS Extract," and a section titled "Floppy PNG" containing "QuickJS Extract" with code snippets (e.g., import ( open_SEEK_END, loadfile ) from "std";). On the right, the same document is open in a browser window with the browser’s toolbar visible, displaying identical content including the title, author, date, sections, and code. The code snippets include JavaScript-like syntax for extracting data from files (e.g., let img = file.read(4, "u")). Provided by @altbot, generated privately and locally using Qwen3-Vl:30b
January 22, 2026 at 10:31 PM
logicalmap.org
#Servo will mostly render logical maps. The problem is when I adorn the nodes with #d3 (which has to find the node to modify). I'll keep watching/testing, but the big win is DecompressionStream is implemented, so it reads Floppy PNGs. #ServoBrowser
Screenshot of a web page titled "Logical Map" at https:// logicalmap.org/#Top. Top toolbar includes icons (information, download, email, settings, etc.) and "Terms & Privacy" text. Left panel lists terms like "agents", "Govern", "bath", "Energy", etc. Center shows a mind map: green "Govern" node connected to blue nodes (e.g., "0.4 Medical", "0.6 Shelter", "0.7 Water") and red rectangular nodes (R1 Dams, R2 Farmland, R3 Generation, R4 Hospitals, R5 Public, R6 Stores, R7 Supplies). Terminal output below displays error messages: "TypeError: {} does not refer to a JS script", "ERROR server:shel:running_app_state", "ERROR at https:// logicalmap.org:3698:2" and "ERROR at https:// logicalmap.org:3698:32 node.node().getBox is not a function". Provided by @altbot, generated privately and locally using Qwen3-Vl:30b
January 20, 2026 at 3:05 PM
logicalmap.org
The first time a visitor hits logicalmap.org , I want them to get an extra hint to view the key for help, but I don't want it to block reading the site regardless of viewport size, and I don't want them to see it on return. I set a local storage item and use #css .
January 19, 2026 at 8:27 PM
logicalmap.org
My color scheme at the top of Logical Map for my icons (and the map) is based on Paul Tol's Vibrant scheme.
sronpersonalpages.nl/~pault/

#accessibility #ColorBlindness
A material flow titled "Food" is displayed, with a top section featuring icons (information, map, inbox/import, outbox/export, gear/config, save, PDF, key, gavel/legal) and the text "Terms & Privacy." Below, the flowchart includes labeled rectangles and ovals connected by arrows: red-bordered rectangles for "R1 Farm Storage," "R2 Fields," "R3 Stores," "R4 Water"; green-bordered rectangles for "Farm Help" and "Farmers"; blue ovals for "0.3.1 Distribution," "0.3.2 Harvest," "0.3.4 Plant," "0.3.3 Irrigate," "0.3.5 Plow"; and a green rectangle labeled "Wheat Link." Arrows show relationships, such as "Farm Storage" linking to "Distribution," "Farmers" linking to "Wheat Link," and "Fields" linking to "Plant." The left side has text reading "Top → Food."
January 18, 2026 at 7:54 PM
logicalmap.org
The Gear icon will import a config file to set layout options by level, now, on Logical Map:

#KnowledgeGraph #GraphLayout
January 17, 2026 at 10:32 PM
logicalmap.org
Logical map stores locally and saves maps between browser sessions. You can build your own maps directly. Use 📤️ to save maps.
January 14, 2026 at 7:25 PM