root / trunk / extensions / extGeoProcessing / src / com / iver / cit / gvsig / geoprocess / core / fmap / AverageFunction.java @ 8212
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| 1 | 5412 | azabala | /*
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| 2 | * Created on 23-feb-2006
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| 3 | *
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| 4 | * gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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| 5 | *
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| 6 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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| 7 | *
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| 8 | * This program is free software; you can redistribute it and/or
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| 9 | * modify it under the terms of the GNU General Public License
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| 10 | * as published by the Free Software Foundation; either version 2
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| 11 | * of the License, or (at your option) any later version.
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| 12 | *
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| 13 | * This program is distributed in the hope that it will be useful,
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 16 | * GNU General Public License for more details.
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| 17 | *
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| 18 | * You should have received a copy of the GNU General Public License
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| 19 | * along with this program; if not, write to the Free Software
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| 20 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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| 21 | *
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| 22 | * For more information, contact:
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| 23 | *
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| 24 | * Generalitat Valenciana
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| 25 | * Conselleria d'Infraestructures i Transport
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| 26 | * Av. Blasco Ib??ez, 50
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| 27 | * 46010 VALENCIA
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| 28 | * SPAIN
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| 29 | *
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| 30 | * +34 963862235
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| 31 | * gvsig@gva.es
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| 32 | * www.gvsig.gva.es
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| 33 | *
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| 34 | * or
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| 35 | *
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| 36 | * IVER T.I. S.A
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| 37 | * Salamanca 50
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| 38 | * 46005 Valencia
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| 39 | * Spain
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| 40 | *
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| 41 | * +34 963163400
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| 42 | * dac@iver.es
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| 43 | */
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| 44 | /* CVS MESSAGES:
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| 45 | *
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| 46 | * $Id$
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| 47 | * $Log$
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| 48 | 5919 | azabala | * Revision 1.2 2006-06-20 18:19:43 azabala
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| 49 | * refactorizaci?n para que todos los nuevos geoprocesos cuelguen del paquete impl
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| 50 | *
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| 51 | * Revision 1.1 2006/05/24 21:12:16 azabala
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| 52 | 5412 | azabala | * primera version en cvs despues de refactoring orientado a crear un framework extensible de geoprocessing
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| 53 | *
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| 54 | * Revision 1.1 2006/02/26 20:55:28 azabala
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| 55 | * *** empty log message ***
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| 56 | *
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| 57 | *
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| 58 | */
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| 59 | package com.iver.cit.gvsig.geoprocess.core.fmap; |
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| 60 | |||
| 61 | import com.hardcode.gdbms.engine.values.NumericValue; |
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| 62 | import com.hardcode.gdbms.engine.values.ValueFactory; |
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| 63 | |||
| 64 | public class AverageFunction implements SummarizationFunction { |
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| 65 | double sum = 0d; |
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| 66 | int numElements = 0; |
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| 67 | |||
| 68 | public void process(NumericValue value) { |
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| 69 | sum += value.doubleValue(); |
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| 70 | numElements++; |
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| 71 | } |
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| 72 | |||
| 73 | public NumericValue getSumarizeValue() {
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| 74 | 5919 | azabala | if(numElements == 0) |
| 75 | return ValueFactory.createValue(0d); |
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| 76 | 5412 | azabala | double res = sum / (double)numElements; |
| 77 | return ValueFactory.createValue(res);
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| 78 | } |
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| 79 | |||
| 80 | public String toString(){ |
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| 81 | return "avg"; |
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| 82 | } |
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| 83 | |||
| 84 | public void reset() { |
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| 85 | sum = 0d;
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| 86 | numElements = 0;
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| 87 | |||
| 88 | } |
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| 89 | } |