L-system generator
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Wandora's L-system generator is used to construct topic map graphs using formal grammar called [http://en.wikipedia.org/wiki/L-systems L-systems]. L-systems are generally known as iterative computational methods used to generate self-similar fractals, usually plants and other biological organisms. | Wandora's L-system generator is used to construct topic map graphs using formal grammar called [http://en.wikipedia.org/wiki/L-systems L-systems]. L-systems are generally known as iterative computational methods used to generate self-similar fractals, usually plants and other biological organisms. | ||
| − | Wandora's L-system generator starts with '''File > Generate > L-system generator...'''. Option opens a dialog with two tabs: '''L-system''' and '''Parser'''. By default the L-system tab is active. L-system tab is used to enter actual L-system to the generator. Below is a snapshot of L-system tab view in Wandora. Tab contains also drop-down-selector to select ready-made L-systems. User can also store his/her own L- | + | Wandora's L-system generator starts with '''File > Generate > L-system generator...'''. Option opens a dialog with two tabs: '''L-system''' and '''Parser'''. By default the L-system tab is active. L-system tab is used to enter actual L-system to the generator. Below is a snapshot of L-system tab view in Wandora. Tab contains also drop-down-selector to select ready-made L-systems. User can also store his/her own L-system by clicking '''new''' button and entering name for the L-system into a dialog Wandora opens. Wandora stores L-systems to [[Wandora options|options]]. |
[[Image:L_system.gif|center]] | [[Image:L_system.gif|center]] | ||
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| + | L-system contains in Wandora | ||
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| + | * An initiator | ||
| + | * One or more rules | ||
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| + | Initiator is the first line in L-system. It is usually an alphabet or set of alphabets. Initiator initializes the L-system string. For example, the snapshot above has an L-system with initiator '''x'''. | ||
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| + | L-system rules have always two parts: Predecessor and successor. Rule is executed whenever L-system generated string contains predecessor. Predecessor is replaced by successor string during the rule execution. For example, the snapshot L-system above contains one rule where predecessor is '''x''' and successor is '''a[xx]'''. | ||
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| + | L-system execution continues only limited time. Each execution step is called iteration. Text field below the L-system definition text area contains number of L-system iterations. As L-system string may grow exponentially large it is suggested you not to use more than 10 iterations unless you are sure about the outcome of L-system. | ||
Revision as of 18:51, 10 December 2008
Wandora's L-system generator is used to construct topic map graphs using formal grammar called L-systems. L-systems are generally known as iterative computational methods used to generate self-similar fractals, usually plants and other biological organisms.
Wandora's L-system generator starts with File > Generate > L-system generator.... Option opens a dialog with two tabs: L-system and Parser. By default the L-system tab is active. L-system tab is used to enter actual L-system to the generator. Below is a snapshot of L-system tab view in Wandora. Tab contains also drop-down-selector to select ready-made L-systems. User can also store his/her own L-system by clicking new button and entering name for the L-system into a dialog Wandora opens. Wandora stores L-systems to options.
L-system contains in Wandora
- An initiator
- One or more rules
Initiator is the first line in L-system. It is usually an alphabet or set of alphabets. Initiator initializes the L-system string. For example, the snapshot above has an L-system with initiator x.
L-system rules have always two parts: Predecessor and successor. Rule is executed whenever L-system generated string contains predecessor. Predecessor is replaced by successor string during the rule execution. For example, the snapshot L-system above contains one rule where predecessor is x and successor is a[xx].
L-system execution continues only limited time. Each execution step is called iteration. Text field below the L-system definition text area contains number of L-system iterations. As L-system string may grow exponentially large it is suggested you not to use more than 10 iterations unless you are sure about the outcome of L-system.
