Editing L-system (section)

=== Manual L-System Construction ===
Historically, the construction of L-systems relied heavily on manual efforts by experts,<ref>Dinnus Frijters and Aristid Lindenmayer. A model for the growth and owering of Aster novae-angliae on the basis of table < 10 > L-systems. In L systems, pages 2452. Springer, 1974.</ref><ref name=":0">Prusinkiewicz, P., & Lindenmayer, A. (2012). ''The algorithmic beauty of plants''. Springer Science & Business Media.</ref><ref name=":1">T. Nishida, K0L-system simulating almost but not exactly the same development-case of Japanese Cypress, Memoirs of the Faculty of Science, Kyoto University, Series B 8 (1) (1980) 97122.</ref> requiring detailed measurements, domain knowledge, and significant time investment. The process often involved analyzing biological structures and encoding their developmental rules into L-systems, symbol by symbol. This labor-intensive method made creating accurate models for complex processes both tedious and error-prone.

A notable example is Nishida's <ref name=":1" /> work on Japanese Cypress trees, where he manually segmented branches from a series of images and identified 42 distinct growth mechanisms to construct a stochastic L-system. Despite the significant effort involved, the resulting system provided only an approximation of the tree's growth, illustrating the challenges of manually encoding such detailed biological processes. This arduous task was described as "tedious and intricate," underscoring the limitations of manual approaches.

The challenges of manual L-system construction are also well-documented in The Algorithmic Beauty of Plants <ref name=":0" /> by Przemyslaw Prusinkiewicz and Aristid Lindenmayerd. The book demonstrates how L-systems can elegantly model plant growth and fractal patterns, but the examples often required expert intervention to define the necessary rules.

Manual construction was further constrained by the need for domain-specific expertise, as seen in other applications of L-systems beyond biology, such as architectural design and urban modeling.<ref>Pascal Muller, Peter Wonka, Simon Haegler, Andreas Ulmer, and Luc Van Gool. Procedural modeling of buildings. ACM Transactions On Graphics, 25(3):614623, 2006.</ref> In these fields, creating an accurate L-system required not only an understanding of the L-system formalism but also extensive knowledge of the domain being modeled.