IrisDataFetcher.java

/*-
 *
 *  * Copyright 2015 Skymind,Inc.
 *  *
 *  *    Licensed under the Apache License, Version 2.0 (the "License");
 *  *    you may not use this file except in compliance with the License.
 *  *    You may obtain a copy of the License at
 *  *
 *  *        http://www.apache.org/licenses/LICENSE-2.0
 *  *
 *  *    Unless required by applicable law or agreed to in writing, software
 *  *    distributed under the License is distributed on an "AS IS" BASIS,
 *  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  *    See the License for the specific language governing permissions and
 *  *    limitations under the License.
 *
 */

package org.nd4j.linalg.dataset;

import org.nd4j.linalg.dataset.api.iterator.fetcher.BaseDataFetcher;

import java.io.IOException;


public class IrisDataFetcher extends BaseDataFetcher {


    /**
     * 
     */
    private static final long serialVersionUID = 4566329799221375262L;
    public final static int NUM_EXAMPLES = 150;

    public IrisDataFetcher() {
        numOutcomes = 3;
        inputColumns = 4;
        totalExamples = NUM_EXAMPLES;
    }

    @Override
    public void fetch(int numExamples) {
        int from = cursor;
        int to = cursor + numExamples;
        if (to > totalExamples)
            to = totalExamples;

        try {
            initializeCurrFromList(IrisUtils.loadIris(from, to));
            cursor += numExamples;
        } catch (IOException e) {
            throw new IllegalStateException("Unable to load iris.dat");
        }

    }


}