gvsig-raster / org.gvsig.raster / trunk / org.gvsig.raster / org.gvsig.raster.lib / org.gvsig.raster.lib.impl / src / main / java / org / gvsig / raster / impl / grid / GridNotInterpolated.java @ 859
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/*******************************************************************************
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GridWrapperNotInterpolated
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Copyright (C) Victor Olaya
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*******************************************************************************/
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package org.gvsig.raster.impl.grid; |
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import org.gvsig.fmap.dal.coverage.RasterLibrary; |
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import org.gvsig.fmap.dal.coverage.dataset.Buffer; |
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import org.gvsig.fmap.dal.coverage.datastruct.GridExtent; |
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import org.gvsig.fmap.dal.coverage.exception.RasterBufferInvalidAccessException; |
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import org.gvsig.fmap.dal.coverage.exception.RasterBufferInvalidException; |
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import org.gvsig.fmap.dal.coverage.store.RasterDataStore; |
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import org.gvsig.fmap.dal.coverage.store.RasterQuery; |
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import org.gvsig.raster.impl.DefaultRasterManager; |
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import org.gvsig.raster.impl.buffer.RasterBuffer; |
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/**
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* A grid wrapper that does not perform interpolation to
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* calculate cell values. This should be used when the window
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* extent 'fits' into the structure (coordinates and cellsize)
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* of the grid, so it is faster than using a grid wrapper with
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* interpolation
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*
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* Upon construction, cellsizes are not checked, so they are assumed
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* to be equal. Use a QueryableGridWindow to safely create a GridWrapper
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* better than instantiating this class directly.
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*
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* @author Victor Olaya (volaya@ya.com)
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*/
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public class GridNotInterpolated extends GridReader { |
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//this offsets are in cells, not in map units.
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int m_iOffsetX;
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int m_iOffsetY;
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//width of the valid area (the RasterBuffer)
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int m_iWidth;
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int m_iHeight;
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/**
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* Crea un objeto lector a partir de un buffer de datos y el extent de la extensi?n
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* completa y de la ventana accedida.
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* @param rb Buffer de datos
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* @param layerExtent extent de la capa completa
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* @param windowExtent Extent
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* @param bands N?mero de bandas del origen
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*/
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public GridNotInterpolated( Buffer rb, |
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GridExtent layerExtent, |
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GridExtent windowExtent, |
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int[] bands) { |
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super(rb, layerExtent, windowExtent, bands);
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m_iWidth = rb.getWidth(); |
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m_iHeight = rb.getHeight(); |
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} |
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/**
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* Crea un objeto lector a partir de una fuente de datos y el extent de la extensi?n
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* completa y de la ventana accedida. La fuente de datos no tiene bandas asignadas ni ?rea
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* de inter?s. Estas son calculadas a partir de los extent pasados por par?metro.
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* @param ds Fuente de datos
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* @param layerExtent extent de la capa completa
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* @param windowExtent Extent
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* @param bands N?mero de bandas del origen
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*/
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public GridNotInterpolated( RasterDataStore ds,
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GridExtent layerExtent, |
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GridExtent windowExtent, |
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int[] bands) { |
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super(ds, layerExtent, windowExtent, bands);
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init(); |
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} |
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/**
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* Inicializaci?n de la fuente de datos y carga del buffer.
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*/
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private void init() { |
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double dMinX, dMaxX, dMinY, dMaxY;
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int iWindowMinX, iWindowMinY;
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int iBufMinX, iBufMaxX, iBufMinY, iBufMaxY;
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iWindowMinX = (int) ((windowExtent.minX() - layerExtent.minX() )
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/ windowExtent.getCellSizeX()); |
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iWindowMinY = (int) ((layerExtent.maxY() - windowExtent.maxY() )
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/ windowExtent.getCellSizeY()); |
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dMinX = Math.min(Math.max(windowExtent.minX(), layerExtent.minX()), layerExtent.maxX()); |
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dMinY = Math.min(Math.max(windowExtent.minY(), layerExtent.minY()), layerExtent.maxY()); |
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dMaxX = Math.max(Math.min(windowExtent.maxX(), layerExtent.maxX()), layerExtent.minX()); |
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dMaxY = Math.max(Math.min(windowExtent.maxY(), layerExtent.maxY()), layerExtent.minY()); |
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iBufMinX = (int) Math.floor((dMinX - windowExtent.minX()) / windowExtent.getCellSizeX()) |
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+ iWindowMinX; |
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iBufMinY = (int) Math.floor((dMaxY - windowExtent.maxY()) / windowExtent.getCellSizeY()) |
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+ iWindowMinY;; |
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iBufMaxX = (int) Math.floor((dMaxX - windowExtent.minX()) / windowExtent.getCellSizeX()) |
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+ iWindowMinX; |
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iBufMaxY = (int) Math.floor((dMinY - windowExtent.maxY()) / windowExtent.getCellSizeY()) |
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+ iWindowMinY; |
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m_iOffsetX = iBufMinX - iWindowMinX; |
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m_iOffsetY = iBufMinY - iWindowMinY; |
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m_iWidth = Math.abs(iBufMaxX - iBufMinX) ;
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m_iHeight = Math.abs(iBufMaxY - iBufMinY) ;
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try {
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RasterQuery query = DefaultRasterManager.getInstance().createQuery(); |
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query.setDrawableBands(bands); |
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query.setAreaOfInterest(iBufMinX, iBufMinY, m_iWidth, m_iHeight); |
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query.storeLastBuffer(true);
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rasterBuf = dataStore.query(query); |
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} catch (Exception e){ |
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rasterBuf = null;
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} |
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} |
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/**
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* Comprueba si una coordenada pixel est? dentro del grid
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* @param x Coordenada X a comprobar
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* @param y Coordenada Y a comprobar
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* @return true si la coordenada X e Y pasada por par?metro cae dentro del grid
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* y false si cae fuera.
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*/
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private boolean isInRasterBuf(int x, int y){ |
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if (rasterBuf != null) |
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return x >= 0 && y >= 0 && x < m_iWidth && y < m_iHeight; |
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else
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return false; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.GridReader#getCellValueAsByte(int, int)
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*/
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public byte getCellValueAsByte(int x, int y) throws RasterBufferInvalidAccessException, RasterBufferInvalidException { |
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try{
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if (isInRasterBuf(x - m_iOffsetX, y - m_iOffsetY))
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return rasterBuf.getElemByte(y - m_iOffsetY, x - m_iOffsetX, bandToOperate);
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else
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return rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().byteValue() : RasterLibrary.defaultByteNoDataValue;
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidException("Null Buffer"); |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.GridReader#getCellValueAsShort(int, int)
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*/
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public short getCellValueAsShort(int x, int y) throws RasterBufferInvalidAccessException, RasterBufferInvalidException { |
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try{
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if (isInRasterBuf(x - m_iOffsetX, y - m_iOffsetY))
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return rasterBuf.getElemShort(y - m_iOffsetY, x - m_iOffsetX, bandToOperate);
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else
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return rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().shortValue() : RasterLibrary.defaultShortNoDataValue;
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidException("Null Buffer"); |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.GridReader#getCellValueAsInt(int, int)
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*/
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public int getCellValueAsInt(int x, int y) throws RasterBufferInvalidAccessException, RasterBufferInvalidException { |
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try{
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if (isInRasterBuf(x - m_iOffsetX, y - m_iOffsetY))
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return rasterBuf.getElemInt(y - m_iOffsetY, x - m_iOffsetX, bandToOperate);
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else
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return rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().intValue() : RasterLibrary.defaultIntegerNoDataValue;
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidException("Null Buffer"); |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.GridReader#getCellValueAsFloat(int, int)
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*/
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public float getCellValueAsFloat(int x, int y) throws RasterBufferInvalidAccessException, RasterBufferInvalidException { |
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try{
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if (isInRasterBuf(x - m_iOffsetX, y - m_iOffsetY))
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return rasterBuf.getElemFloat(y - m_iOffsetY, x - m_iOffsetX, bandToOperate);
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else
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return rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().floatValue() : RasterLibrary.defaultFloatNoDataValue;
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidException("Null Buffer"); |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.GridReader#getCellValueAsDouble(int, int)
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*/
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public double getCellValueAsDouble(int x, int y) throws RasterBufferInvalidAccessException, RasterBufferInvalidException { |
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try{
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if (isInRasterBuf(x - m_iOffsetX, y - m_iOffsetY))
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return rasterBuf.getElemDouble(y - m_iOffsetY, x - m_iOffsetX, bandToOperate);
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else
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return rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().doubleValue() : RasterLibrary.defaultDoubleNoDataValue;
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidException("Null Buffer"); |
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} |
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} |
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/**
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* Obtiene el valor de una celda en double.
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* @param x Posici?n X del valor que queremos recuperar
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* @param y Posici?n Y del valor que queremos recuperar
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* @return Valor de tipo double contenido en la posici?n especificada
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*/
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public double getCellValue(int x, int y)throws RasterBufferInvalidAccessException{ |
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try{
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if (dataType == RasterBuffer.TYPE_DOUBLE) {
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return rasterBuf.getElemDouble(x, y, 0); |
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} else if (dataType == RasterBuffer.TYPE_INT) { |
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return (double) rasterBuf.getElemInt(x, y, 0); |
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} else if (dataType == RasterBuffer.TYPE_FLOAT) { |
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return (double) rasterBuf.getElemFloat(x, y, 0); |
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} else if (dataType == RasterBuffer.TYPE_BYTE) { |
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return (double) rasterBuf.getElemByte(x, y, 0); |
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} else if ((dataType == RasterBuffer.TYPE_SHORT) | (dataType == RasterBuffer.TYPE_USHORT)) { |
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return (double) rasterBuf.getElemShort(x, y, 0); |
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} |
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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} |
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return rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().doubleValue() : RasterLibrary.defaultDoubleNoDataValue;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.GridReader#getBandsValuesAsByte(int, int)
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*/
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public byte[] getBandsValuesAsByte(int x, int y) throws RasterBufferInvalidAccessException, RasterBufferInvalidException { |
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byte[] b = new byte[rasterBuf.getBandCount()]; |
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try{
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if (isInRasterBuf(x - m_iOffsetX, y - m_iOffsetY)){
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try{
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rasterBuf.getElemByte(y - m_iOffsetY, x - m_iOffsetX, b); |
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidException("Null Buffer"); |
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} |
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return b;
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}else{
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for(int i = 0; i < rasterBuf.getBandCount(); i++) |
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b[i] = rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().byteValue() : RasterLibrary.defaultByteNoDataValue; |
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return b;
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} |
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}catch(Exception e){ |
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for(int i = 0; i < rasterBuf.getBandCount(); i++) |
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b[i] = rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().byteValue() : RasterLibrary.defaultByteNoDataValue; |
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return b;
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} |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.GridReader#getBandsValuesAsShort(int, int)
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*/
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public short[] getBandsValuesAsShort(int x, int y) throws RasterBufferInvalidAccessException, RasterBufferInvalidException { |
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short[] b = new short[rasterBuf.getBandCount()]; |
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try{
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if (isInRasterBuf(x - m_iOffsetX, y - m_iOffsetY)){
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try{
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rasterBuf.getElemShort(y - m_iOffsetY, x - m_iOffsetX, b); |
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidException("Null Buffer"); |
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} |
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return b;
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}else{
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for(int i = 0; i < rasterBuf.getBandCount(); i++) |
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b[i] = rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().shortValue() : RasterLibrary.defaultShortNoDataValue; |
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return b;
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} |
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}catch(Exception e){ |
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for(int i = 0; i < rasterBuf.getBandCount(); i++) |
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b[i] = rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().shortValue() : RasterLibrary.defaultShortNoDataValue; |
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return b;
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} |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.GridReader#getBandsValuesAsInt(int, int)
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*/
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public int[] getBandsValuesAsInt(int x, int y) throws RasterBufferInvalidAccessException, RasterBufferInvalidException { |
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int[] b = new int[rasterBuf.getBandCount()]; |
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try{
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if (isInRasterBuf(x - m_iOffsetX, y - m_iOffsetY)){
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try{
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rasterBuf.getElemInt(y - m_iOffsetY, x - m_iOffsetX, b); |
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidException("Null Buffer"); |
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} |
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return b;
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}else{
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for(int i = 0; i < rasterBuf.getBandCount(); i++) |
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b[i] = rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().intValue() : RasterLibrary.defaultIntegerNoDataValue; |
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return b;
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} |
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}catch(Exception e){ |
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for(int i = 0; i < rasterBuf.getBandCount(); i++) |
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b[i] = rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().intValue() : RasterLibrary.defaultIntegerNoDataValue; |
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return b;
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} |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.GridReader#getBandsValuesAsFloat(int, int)
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*/
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public float[] getBandsValuesAsFloat(int x, int y) throws RasterBufferInvalidAccessException, RasterBufferInvalidException { |
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float[] b = new float[rasterBuf.getBandCount()]; |
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try{
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if (isInRasterBuf(x - m_iOffsetX, y - m_iOffsetY)){
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try{
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rasterBuf.getElemFloat(y - m_iOffsetY, x - m_iOffsetX, b); |
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidException("Null Buffer"); |
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} |
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return b;
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}else{
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for(int i = 0; i < rasterBuf.getBandCount(); i++) |
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b[i] = rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().floatValue() : RasterLibrary.defaultFloatNoDataValue; |
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return b;
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} |
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}catch(Exception e){ |
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for(int i = 0; i < rasterBuf.getBandCount(); i++) |
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b[i] = rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().floatValue() : RasterLibrary.defaultFloatNoDataValue; |
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return b;
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} |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.grid.GridReader#getBandsValuesAsDouble(int, int)
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*/
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public double[] getBandsValuesAsDouble(int x, int y) throws RasterBufferInvalidAccessException, RasterBufferInvalidException { |
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double[] b = new double[rasterBuf.getBandCount()]; |
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try{
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if (isInRasterBuf(x - m_iOffsetX, y - m_iOffsetY)){
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try{
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rasterBuf.getElemDouble(y - m_iOffsetY, x - m_iOffsetX, b); |
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}catch(ArrayIndexOutOfBoundsException e){ |
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throw new RasterBufferInvalidAccessException("Access to data type " + dataType + "invalid"); |
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}catch(NullPointerException e){ |
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throw new RasterBufferInvalidException("Null Buffer"); |
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} |
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return b;
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}else{
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for(int i = 0; i < rasterBuf.getBandCount(); i++) |
| 390 |
b[i] = rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().doubleValue() : RasterLibrary.defaultDoubleNoDataValue; |
| 391 |
return b;
|
| 392 |
} |
| 393 |
}catch(Exception e){ |
| 394 |
for(int i = 0; i < rasterBuf.getBandCount(); i++) |
| 395 |
b[i] = rasterBuf.getNoDataValue().isDefined() ? rasterBuf.getNoDataValue().getValue().doubleValue() : RasterLibrary.defaultDoubleNoDataValue; |
| 396 |
return b;
|
| 397 |
} |
| 398 |
} |
| 399 |
} |