| gvSIG desktop 1

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2006 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 */

package org.gvsig.raster.driver;

import java.util.ArrayList;

import java.util.Date;

import org.gvsig.raster.driver.datasetproperties.DatasetStatistics;

/**

 * Estadisticas asociadas a un fichero raster formado por multiples ficheros.

 *  

 * @author Nacho Brodin (nachobrodin@gmail.com)

 */

public class MultiFileStatistics extends DatasetStatistics{

        private DatasetStatistics[]         statList = null;

        private RasterDataset[]         grfList = null;

        /**

         * Constructor

         */

        public MultiFileStatistics(RasterDataset[] grfList){

                super(null);

                this.grfList = grfList;

                statList = new DatasetStatistics[grfList.length];

                for(int i = 0; i < grfList.length; i ++)

                        statList[i] = this.grfList[i].getStatistics();

        }

        /**

         * Constructor

         */

        public MultiFileStatistics(ArrayList grfList){

                super(null);

                statList = new DatasetStatistics[grfList.size()];

                this.grfList = new RasterDataset[grfList.size()];

                for(int i = 0; i < grfList.size(); i ++){

                        this.grfList[i] = (RasterDataset)grfList.get(i);

                        statList[i] = this.grfList[i].getStatistics();

                }

        }

        /**

         * Calcula las estadisticas recorriendo todo el fichero.

         */

        public void calcFullStatistics()throws FileNotOpenException, RasterDriverException{

                long t2;

        long t1 = new Date().getTime();

        int len = 0;

                for(int i = 0; i < statList.length; i ++){

                        statList[i].calcFullStatistics();

                        len += grfList[i].getBandCount();

                }

                constructStats(len);

        calculated = true;

                t2 = new Date().getTime();

            System.out.println("Estadisticas MultiFile: " + ((t2 - t1) / 1000D) + ", secs.");

        }

        private void constructStats(int len){

                max = new double[len];

                min = new double[len];

                secondMax = new double[len];

                secondMin = new double[len];

                mean = new double[len];

                variance = new double[len];

                int count = 0;

                for(int i = 0; i < statList.length; i ++){

                        for(int j = 0; j < statList[i].getMax().length; j ++){

                                max[count] = statList[i].getMax()[j];

                                min[count] = statList[i].getMin()[j];

                                secondMax[count] = statList[i].getSecondMax()[j];

                                secondMin[count] = statList[i].getSecondMin()[j];

                                mean[count] = statList[i].getMean()[j];

                                variance[count] = statList[i].getVariance()[j];

                                count ++;

                        }

                }

        }

        /**

         * Carga estadisticas desde el fichero Rmf si las hay.

         * @param fName Nombre del fichero

         */

        public void loadFromRmf(){

                int len = 0;

                for(int i = 0; i < statList.length; i ++){

                        statList[i].loadFromRmf();

                        len += grfList[i].getBandCount();

                }

                constructStats(len);

        }

        /**

         * Salva estad?sticas a fichero rmf.

         * @param fName

         */

        public void saveToRmf(){

                for(int i = 0; i < statList.length; i ++)

                        statList[i].saveToRmf();

        }

        /**

         * Obtiene el flag que informa de si las estad?sticas est?n calculadas o no.

         * @return true indica que est?n calculadas y false que no lo est?n

         */

        public boolean isCalculated() {

                return calculated;

        }

        /**

         * N?mero de bandas

         * @return

         */

        public int getBandCount(){

                int bandCount = 0;

                for(int i = 0; i < statList.length; i ++)

                        bandCount += statList[i].getBandCount();

                return bandCount;

        }

}