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Currently Playing: Xah Ep718 Wolfram Language, Custom Function, 2d Graphics to SVG. Part 2

This video is the second part of a series focusing on writing a custom Wolfram Language function to convert Wolfram Language graphics to SVG. Here's a summary of what's covered: The creator demonstrates how to define and use Wolfram Language functions, specifically showing how to create graphics using primitives like Circle and Line (4:29, 56:00). The core of the video involves enhancing a previously written function called graphicsToSVGString to convert both Circle and Line graphic primitives into their corresponding SVG string representations (15:57, 56:00). A significant portion of the video discusses Wolfram Language's computational model, emphasizing its basis in pattern matching and term rewriting systems (26:59). This is contrasted with other programming language models. The creator then modifies the function to save the generated SVG string directly to a file, demonstrating the WriteString function (1:00:37). Finally, the video touches upon the challenges of converting Wolfram Language coordinates to SVG coordinates, including issues with origin centering, y-axis reversal, and the need for coordinate rescaling using SVG's viewBox (1:13:25). The video discusses different "centers" of a triangle, which are specific points within or related to a triangle. The speaker mentions the following: Circumcircle/Circumcenter (23:29): A circle that passes through all three vertices of a triangle. The center of this circle is the circumcenter. Inscribed Circle/Incenter (24:27): A circle of maximum size that fits inside a triangle, touching all three sides. The center of this circle is the incenter. The incenter is also described as the point where the three interior angle bisectors intersect (33:51). Other Centers: The video briefly touches on other centers like the centroid (34:42) and orthocenter (34:49). These are mentioned as part of a broader concept of "so-called centers" in geometry. The video discusses the concept and history of notebooks, particularly in the context of the Wolfram Language. Here's a summary: Origin: The speaker states that Wolfram Language (Mathematica) invented the notebook interface in 1989, making it the first of its kind (32:55). Jupyter Notebook: Jupyter Notebook is mentioned as a popular example that copied the Wolfram Language's notebook idea (33:01, 37:47). Advantages over Command Line/REPL: The speaker emphasizes that the notebook interface is superior to a command-line interface (CLI) or a "REPL" (Read-Eval-Print Loop) (47:09). Notebooks allow you to jump to and modify any part of the code at any time, unlike CLIs which are linear and force you into sequential input/output (47:09-47:45). Features: Notebooks can include features like headers, sections, bold/italic formatting, and automatic formatting/indentation of code (38:19, 53:02). Notes at http://xahlee.info/talk_show/xah_talk_show_ep718.html If browser says security error, that is because it auto changes URL from HTTP to HTTPS. It's a way to censor 22 million old websites. Remove the S in HTTPS. Or use brave browser or safari.