Tool Wa-Tor

Wa-Tor - an ecological simulation of predator-prey populations - is based upon A. K. Dewdney's 'Computer Recreations' article in the December 1984 issue of Scientific American.

References

Dewdney, A.K. (1984): Sharks and fish Wage an ecological War on the toroidal planet Wa-Tor. Scientific American. pp. I4—22.

Author: O.Conrad (c) 2003
Menu: Simulation|Cellular Automata

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Target System (*)	Grid, input, optional, CMD	`TARGET_TEMPLATE`	use this grid's system for output grids	-
Output	Wa-Tor	Grid, output	`GRID`	-	-
Output	Cycles	Table, output	`TABLE`	-	-
Options	Target Grid System	Choice	`TARGET_DEFINITION`	-	Available Choices: [0] user defined [1] grid or grid system Default: 0
	Cellsize	Floating point	`TARGET_USER_SIZE`	-	Minimum: 0.000000 Default: 1.000000
	West	Floating point	`TARGET_USER_XMIN`	-	Default: 0.000000
	East	Floating point	`TARGET_USER_XMAX`	-	Default: 100.000000
	South	Floating point	`TARGET_USER_YMIN`	-	Default: 0.000000
	North	Floating point	`TARGET_USER_YMAX`	-	Default: 100.000000
	Columns	Integer	`TARGET_USER_COLS`	Number of cells in East-West direction.	Minimum: 1 Default: 100
	Rows	Integer	`TARGET_USER_ROWS`	Number of cells in North-South direction.	Minimum: 1 Default: 100
	Fit	Choice	`TARGET_USER_FITS`	-	Available Choices: [0] nodes [1] cells Default: 0
	Grid System	Grid system	`TARGET_SYSTEM`	-	-
	Refresh	Boolean	`REFRESH`	-	Default: 1
	Initial Number of Fishes [%]	Floating point	`INIT_FISH`	-	Minimum: 0.000000 Maximum: 100.000000 Default: 30.000000
	Initial Number of Sharks [%]	Floating point	`INIT_SHARK`	-	Minimum: 0.000000 Maximum: 100.000000 Default: 7.500000
	Birth Rate of Fishes	Integer	`FISH_BIRTH`	-	Minimum: 0 Default: 3
	Birth Rate of Sharks	Integer	`SHARK_BIRTH`	-	Minimum: 0 Default: 12
	Max. Starvation Time for Sharks	Integer	`SHARK_STARVE`	-	Minimum: 0 Default: 4
(*) optional

Command-line

Usage: saga_cmd sim_cellular_automata 1 [-TARGET_DEFINITION <str>] [-TARGET_USER_SIZE <double>] [-TARGET_USER_XMIN <double>] [-TARGET_USER_XMAX <double>] [-TARGET_USER_YMIN <double>] [-TARGET_USER_YMAX <double>] [-TARGET_USER_COLS <num>] [-TARGET_USER_ROWS <num>] [-TARGET_USER_FITS <str>] [-TARGET_TEMPLATE <str>] [-GRID <str>] [-REFRESH <str>] [-INIT_FISH <double>] [-INIT_SHARK <double>] [-TABLE <str>] [-FISH_BIRTH <num>] [-SHARK_BIRTH <num>] [-SHARK_STARVE <num>]
  -TARGET_DEFINITION:<str>  	Target Grid System
	Choice
	Available Choices:
	[0] user defined
	[1] grid or grid system
	Default: 0
  -TARGET_USER_SIZE:<double>	Cellsize
	Floating point
	Minimum: 0.000000
	Default: 1.000000
  -TARGET_USER_XMIN:<double>	West
	Floating point
	Default: 0.000000
  -TARGET_USER_XMAX:<double>	East
	Floating point
	Default: 100.000000
  -TARGET_USER_YMIN:<double>	South
	Floating point
	Default: 0.000000
  -TARGET_USER_YMAX:<double>	North
	Floating point
	Default: 100.000000
  -TARGET_USER_COLS:<num>   	Columns
	Integer
	Minimum: 1
	Default: 100
  -TARGET_USER_ROWS:<num>   	Rows
	Integer
	Minimum: 1
	Default: 100
  -TARGET_USER_FITS:<str>   	Fit
	Choice
	Available Choices:
	[0] nodes
	[1] cells
	Default: 0
  -TARGET_TEMPLATE:<str>    	Target System
	Grid, input, optional, CMD
  -GRID:<str>               	Wa-Tor
	Grid, output
  -REFRESH:<str>            	Refresh
	Boolean
	Default: 1
  -INIT_FISH:<double>       	Initial Number of Fishes []
	Floating point
	Minimum: 0.000000
	Maximum: 100.000000
	Default: 30.000000
  -INIT_SHARK:<double>      	Initial Number of Sharks []
	Floating point
	Minimum: 0.000000
	Maximum: 100.000000
	Default: 7.500000
  -TABLE:<str>              	Cycles
	Table, output
  -FISH_BIRTH:<num>         	Birth Rate of Fishes
	Integer
	Minimum: 0
	Default: 3
  -SHARK_BIRTH:<num>        	Birth Rate of Sharks
	Integer
	Minimum: 0
	Default: 12
  -SHARK_STARVE:<num>       	Max. Starvation Time for Sharks
	Integer
	Minimum: 0
	Default: 4