"Hello World" Plugin

tacio

Hello, I'm new here in the RapidMinner Community. I'm starting to develop a new open source clustering plugin for rapid miner. I followed the steps from the manual but I'm having some problems to create my first plugin. 
I got a plugin from the web site, changed the manifest attributes and the operators.xml, and I created a new class extendind the  "AbstractFlatClusterer", and put all these stuff in jar file. At the end I put the jar file in the plugins directory.
My about scren apeared in the Help menu, but the plugin didn't show up in the Clustering operators folder in Rapid Miner GUI.
What Did I do wrong?
Here are the sttuf I wrote:

ABOUT.NFO:
Teste

MANIFEST.MF:
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.7.0
Created-By: 1.5.0_16-b02 (Sun Microsystems Inc.)
Implementation-Vendor: Rapid-I
Implementation-Title: Teste
Implementation-URL: http://www.rapid-i.com
Implementation-Version: 4.2
RapidMiner-Version: 4.2
RapidMiner-Type: RapidMiner_Plugin

operators.xml:
<operators>

  operator
    name        = "Teste"       
    class      = "com.rapidminer.operator.learner.clustering.clusterer.TesteTacioCluster"
    description = "teste"
    group      = "Learner.Unsupervised.Clustering"/>

</operators>

TesteTacioCluster.java:
package com.rapidminer.operator.learner.clustering.clusterer;

import com.rapidminer.example.ExampleSet;
import com.rapidminer.operator.OperatorDescription;
import com.rapidminer.operator.OperatorException;
import com.rapidminer.operator.learner.clustering.ClusterModel;
import com.rapidminer.operator.learner.clustering.FlatCrispClusterModel;


public class TesteTacioCluster extends AbstractFlatClusterer
{

public TesteTacioCluster(OperatorDescription description)
{
super(description);
// TODO Auto-generated constructor stub
}

@Override
public ClusterModel createClusterModel(ExampleSet exampleSet)
throws OperatorException
{
// TODO Auto-generated method stub
return new FlatCrispClusterModel();
}

@Override
public boolean isFlatClusterer()
{
// TODO Auto-generated method stub
return false;
}

}

Thanks in advance for any help.

TobiasMalbrecht

Hi Tacio,

you mean that no operator [tt]Teste[/tt] appeared in the operator group [tt]Leaner.Unsupervised.Clustering[/tt]?

May I ask you, why you want to implement a new clustering plugin? Are there any clustering approaches you especially miss? The reason why I am asking is that we are currently revising the complete bunch of clustering approaches in RapidMiner which seem to result in at least a partial re-implementation. This will on the one hand increase the performance, on the other hand certainly crucially change the program structures concerning the clustering parts which might then lead to problems when you implement a plugin on the basis of the soon deprecated code.

Regards,
Tobias