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-
- The lds program generates and displays a sequence of curves or
- cellular automata like figures which graphically represent the
- evolution of a Lattice Dynamical System (LDS). An LDS is an array
- of cells, each of which represents a dynamical system. Each cell
- is coupled to its nearest neighbors. The dynamical systems available
- in this software package are currently the logistic map, circle map
- and tent map. The state of each cell in the LDS is a real number in
- the unit interval. The evolution of the lattice is determined by an
- iteration thru the specified dynamic (e.g. the logistic equation)
- followed by a weighted averaging with its nearest neighbors.
-
- Command line arguments and run-time keyboard input allow lds to simulate
- a wide variety of lattice dynamical systems. The user can specify the
- dynamic to be used, the non-linearity parameter, the strength of coupling,
- the initial conditions, the size of the array, the lenght of the run,
- whether and how to evolve connection strengths, and more. During the run,
- the display of the evolving LDS can either be CA-like with each generation
- being represented as a horizontal line evolving upward in the window or as
- points or a curve with X axis the lattice and Y-axis the cell states [0,1].
- In addition, graphical display of cell states can be toggled between actual
- state and phase difference with left neighbor. A site histogram curve can
- also be displayed.
-
- Lattice dynamical systems are also referred to as coupled map lattices.
- The literature is sparse but includes the following excellent papers :
-
- "Lyapunov Analysis and Information Flow in Coupled Map Lattices" by
- Kunihiko Kaneko, Physica 23D (1986) 436-447
-
- "Spatiotemporal Chaos in One- and Two- Dimensional Coupled Map Lattices"
- by Kaneko
-
- "Spatiotemporal Chaos and Noise" by Gottfried Mayer-Kress and Kaneko,
- J. Stat. Phys.(1988)
-
- "Pattern Competition Intermittency and Selective Flicker Noise in
- Spatiotemporal Chaos" by Kaneko, Physics Letters A, V125, 1 (1987)
-
- "Pattern Dynamics in Spatiotemporal Chaos" by Kaneko (1987)
-
- "Phenomenology of Spatial-Temporal Chaos" by Jim Crutchfield and Kaneko,
- appearing as a chapter in "Directions in Chaos" edited by Hao Bai-lin,
- World Scientific Publishing (1987)
-
- "Robust Space-Time Intermittency and 1/f Noise" by James Keeler and Doyne
- Farmer, Physica 23D (1986) 413-435
-
- For further info/assistance, e-mail rr@sco.com or ...uunet!sco!rr
-
- Ronald Record
- UCSC/SCO
-