Personal Web Hosting, Tomcat, J2Ee And Hibernate Programming Techniques Blog

Notes on Voter.java 1. scape.getModel().getNumberOfParties(). This line has some interesting features. The number of parties is held by the numberOfParties variable in the root Scape (VoterScape). So the idea is to tell the agent how many parties there are. This way of doing this (rather than, for example, passing the information as a constructor argument) allows the user to change the number of parties at run time. For the Voter agent to get at the getNumberOfParties() method of the VoterScape class requires the two steps shown: ’scape’ and ‘getModel()’. What is going on? scape is protected field of th class, AscapeObject. Since the AscapeObject class is the root of the Ascape system, this fields is inherited by all Ascape objects. It represents the scape (agent) to which the agent in whose code the ’scape’ variable appears, belongs. In the VoterScape example, consider these two lines in the CreateScape() method, voters = new ScapeVector(); voters.setPrototypeAgent(voter); The ScapeVector, voters, “ownes” the voter agent. So, ’scaper’ referes to this Scape. Another line of the code is, addAgent(voters); The votes Scape is added to the root Scape, VoterScape by this instruction. This is where getModel() comes in. getModel() is a method of the Agent class. It gets the root scape, in this case the Scape owning the voters Scape. This is just the VoterScape class which contains the variables and methods which describe the global properties of the model being designed,
We would like to recommend you tested and proved virtual web hosting services, which you will surely find to be of great quality.

* See also dave.ascape.voters2.VoterScape.java */ public class Voter extends CellOccupant { private int supportedParty = 0; private int temp = 0; private int numParties = 0; public Voter() {} public void initialize() { super.initialize(); numParties = ((VoterScape)scape.getModel()).getNumberOfParties(); supportedParty = randomInRange(0, numParties-1); } public void scapeCreated() { getScape().addInitialRule(MOVE_RANDOM_LOCATION_RULE); getScape().addRule(ITERATE_AND_UPDATE_RULE); } public void iterate() { CellOccupant [] neighbors = getHostCell().getNeighboringOccupants(); int chosenNeighbor = randomInRange(0, neighbors.length-1); CellOccupant chosenAgent = neighbors[chosenNeighbor]; temp = ((Voter) chosenAgent).getSupportedParty(); } public void update() { supportedParty = temp; } public Color getColor() { switch(supportedParty) { case 0: return Color.blue; case 1: return Color.red; case 2: return Color.black; case 3: return Color.orange; case 4: return Color.white; default: return Color.green; } } public void setSupportedParty(int p) { supportedParty = p; } public int getSupportedParty() { return supportedParty; } public int getNumParties() { return numParties; } public void setNumParties(int n) { numParties = n; } }
You need excellent and relaible webhost company to host your web applications? Then pay a visit to Inexpensive Web Hosting services.

super(name); } public boolean meetsCondition(Object obj) { return ( ((Voter)obj).getSupportedParty() == 3); } } class PartyE_Standing extends StatCollectorCondCSA { public PartyE_Standing(String name) { this.name = name; } public String getName() { return name; } public boolean meetsCondition(Object obj) { return ( ((Voter)obj).getSupportedParty() == 4); } } } // end VoterScape The Agent Itself The agent itself is in the file Voter.java (in package dave.ascape.voters2). The code for the Voter agent is the same as that in part 1 of this tutorial. Notes on Ascape rules Voter.java (source) package dave.ascape.voters2; import edu.brook.ascape.model.*; import edu.brook.ascape.view.*; import edu.brook.ascape.rule.*; import edu.brook.ascape.util.*; import java.awt.Color; /** * An agent for the VoterScape world. Votes according to the opinion of * a randomly chosen ‘moore’ neighbour. *
We highly recommend you visit web and email hosting services if you need stable and cheap web hosting platform for your web applications.

new StatCollectorCondCSA (”Party A”) { public boolean meetsCondition(Object obj) { return ( ((Voter)obj).getSupportedParty() == 0); } }, new StatCollectorCondCSA (”Party B”) { public boolean meetsCondition(Object obj) { return ( ((Voter)obj).getSupportedParty() == 1); } }, new StatCollectorCondCSA (”Party C”) { public boolean meetsCondition(Object obj) { return ( ((Voter)obj).getSupportedParty() == 2); } }, new PartyD_Standing(”Party D”), new PartyE_Standing(”Party E”) }; // end StatCollector array voters.addStatCollectors(stats); chart = new ChartView(ChartView.HISTOGRAM); voters.addView(chart); chart.addSeries(”Count Party A”, Color.blue); chart.addSeries(”Count Party B”, Color.red); chart.addSeries(”Count Party C”, Color.black); chart.addSeries(”Count Party D”, Color.orange); chart.addSeries(”Count Party E”, Color.yellow); } // end createViews() public void setNumberOfParties(int n) { numberOfParties = n; } public int getNumberOfParties() { return numberOfParties; } class PartyD_Standing extends StatCollectorCondCSA { public PartyD_Standing (String name) {
We recommend you use shared web hosting services, because many users agree that it is cheap, reliable and customer-satisfying webhost.

ScapeVector voters; // the agents Overhead2DView overheadView; public void createScape() { super.createScape(); // needed for basic setup lattice = new ScapeArray2DMoore(); lattice.setPrototypeAgent(new HostCell()); lattice.setExtent(new Coordinate2DDiscrete(latticeWidth, latticeHeight)); Voter voter = new Voter(); // see Voter.java voter.setHostScape(lattice); // where agents live voters = new ScapeVector(); voters.setPrototypeAgent(voter); voters.setExecutionOrder(Scape.RULE_ORDER); addAgent(lattice); // add the lattice to the root scape addAgent(voters); // add the voters list to the root scape } public void onSetup() { ((ScapeVector) voters).setExtent(new Coordinate1DDiscrete(latticeWidth*latticeHeight)); } /* * Putting Ascape into pause right away allows the user to see the * initial situation. The alternative is to cale setStartOnOpen(false) , for example in onSetup(). */ public void onStart() { pause(); } public void createViews() { super.createViews(); //Now, add a simple overhead view so that we can view the lattice: overheadView = new Overhead2DView(); //Set its cell size to 12 overheadView.setCellSize(12); //add it to the lattice so that it can view and be controlled by it lattice.addView(overheadView); /* The following code shows how to add some statistic collection to the Voter Agent and have Ascape display it for your. The stats are collected using inner classes. Serveral ways of doing this are shown. The code is straightforward except for one trick which was ot obvious to me. The trick. */ final StatCollector [] stats = {
If you are in need for cheap and reliable webhost to host your website, we recommend http web server services.

Ascape Tutorial: The Voter Game part 2. Voter Game with histogram view. of the Voter Game Notes on the class structure of Ascape The program consists of two files, VoterScape.java and Voter.java (in package dave.ascape.voters3). The code below is colour coded. Important methods and classes are bolded when they first appear. l red. a method which will be called by Ascape l dark blue. often used methods or fields from the Ascape API. l green. often used Ascape classes This version of the Voter Game adds a histogram view of the vote counts for the parties. The program also pauses on startup. The code in smaller font is identical to the code in part 1 of this tutorial. Note that the file names are the same as those of part 1 but theyare in diffent packages. The Agents’ Environment VoterScape.java (source) package dave.ascape.voters2; import edu.brook.ascape.model.*; import edu.brook.ascape.view.*; import edu.brook.ascape.rule.*; import edu.brook.ascape.util.*; /** * A simple version of Dewdney’s voting game. * Voters ask a random neighbour his choice of party and switch to * that party on the next round of voting. * One run: 4 parties reduced to 1 in 12000 cycles * * In this version, vote counts for the parties are collected and * displayed (by default) in a histogram. * */ public class VoterScape extends ScapeVector { // VoterScape is the root scape private int numberOfParties = 3; private int latticeWidth = 50; private int latticeHeight = 50; ScapeGraph lattice; // the agents’ environment
If you are searching for cheap webhost for your web application, please visit MySQL5 Web Hosting services.

Ascape Views and Stats Ascape provides many ways of viewing the results of agent behaviour. There is the basic overhead view of the agent’s world (often a toroid). As well, various statistics on the agents can be collected and viewed as time series, bar charts and pie charts. The tutorials associated with these notes show some simple uses of views. The Overhead View Most Ascape models implement this view which provides a dynamic picture of the agents. The first tutorial on the Voter Game only implements this view. To do so is quite simple. You simply override the Scape classes createViews() method like so: public void createViews() { super.createViews(); overheadView = new Overhead2DView(); overheadView.setCellSize(12); lattice.addView(overheadView); } The lattice mentioned here is an instance of a ScapeArray2DMoore class. This createViews() method is part of the definition of the VoterScape model root ScapeVector class. Ascape calls createViews() automatically. Collecting and Displaying Statistics To display time series, bar charts, and pie charts you must first have Ascape collect approprate statistics. A simple illustration is provided in Tutorial 2.
Please visit our professional web hosting services to find out about cheap and reliable webhost service that will surely answer all your demands.

CellOccupant chosenAgent = neighbors[chosenNeighbor]; temp = ((Voter) chosenAgent).getSupportedParty(); } public void update() { supportedParty = temp; } public Color getColor() { switch(supportedParty) { case 0: return Color.blue; case 1: return Color.red; case 2: return Color.black; case 3: return Color.orange; case 4: return Color.white; default: return Color.green; } } public void setSupportedParty(int p) { supportedParty = p; } public int getSupportedParty() { return supportedParty; } public int getNumParties() { return numParties; } public void setNumParties(int n) { numParties = n; } }
We highly recommend you visit web and email hosting services if you need stable and cheap web hosting platform for your web applications.

package dave.ascape.voters2; import edu.brook.ascape.model.*; import edu.brook.ascape.view.*; import edu.brook.ascape.rule.*; import edu.brook.ascape.util.*; import java.awt.Color; /** * An agent for the VoterScape world. Votes according to the opinion of * a randomly chosen ‘moore’ neighbour. * * See also dave.ascape.voters2.VoterScape.java */ public class Voter extends CellOccupant { private int supportedParty = 0; private int temp = 0; private int numParties = 0; public Voter() {} // This is not a good way — implies hardcoding of number of parties // in the root VoterScape scape. When the number of parties was passed // this way, the value could not be changed at runtime. See the first // line of initialize for the correct way to get variable values // from the root Scape to individual agents. public Voter(int numParties) { this.numParties = numParties; } public void initialize() { super.initialize(); // scape is a built in field in ScapeObject class. // getModel() is equivalent to getRootScape. The root scape is // where global variables are stored, such as the number of parties. // in this example. Belongs to the Agent class. Returns a Scape // so casting is necessary to the specific model root. numParties = ((VoterScape)scape.getModel()).getNumberOfParties(); supportedParty = randomInRange(0, numParties-1); } public void scapeCreated() { getScape().addInitialRule(MOVE_RANDOM_LOCATION_RULE); getScape().addRule(ITERATE_AND_UPDATE_RULE); } // called by the ITERATE_AND_UPDATE_RULE // iterate is called on every agent. Then update() is called if the ITERATE_AND_UPDAE // rule is used and RULE_ORDER is set. Simulates p;arallelism. public void iterate() { CellOccupant [] neighbors = getHostCell().getNeighboringOccupants(); // choose one at random. chekc itsopinion then change // could also have 3 choices with diffrent probabilities (adjustable) // no chnage, change, random change int chosenNeighbor = randomInRange(0, neighbors.length-1);
You need excellent and relaible webhost company to host your web applications? Then pay a visit to Inexpensive Web Hosting services.

super.createViews(); //Now, add a simple overhead view so that we can view the lattice: overheadView = new Overhead2DView(); //Set its cell size to 12 overheadView.setCellSize(12); //add it to the lattice so that it can view and be controlled by it lattice.addView(overheadView); } public void setNumberOfParties(int n) { numberOfParties = n; } public int getNumberOfParties() { return numberOfParties; } }
If you are searching for cheap webhost for your web application, please visit MySQL5 Web Hosting services.