private BufferedImage toImage(byte[][] bands, int xSize, int ySize) {
int numberOfBands = bands.length;
int numBytes = xSize * ySize * numberOfBands;
DataBuffer imgBuffer = new DataBufferByte(bands, numBytes);
SampleModel sampleModel = new BandedSampleModel(TYPE_BYTE, xSize, ySize, numberOfBands);
WritableRaster raster = Raster.createWritableRaster(sampleModel, imgBuffer, null);
if (numberOfBands == 1) {
Band band = dataset.GetRasterBand(1);
int bufType = band.getDataType();
int dataType = detectDataType(band, bufType);
BufferedImage img;
if (BufferedImage.TYPE_BYTE_INDEXED == dataType) {
ColorTable ct = band.GetRasterColorTable();
IndexColorModel cm = ct.getIndexColorModel(gdal.GetDataTypeSize(bufType));
img = new BufferedImage(xSize, ySize, dataType, cm);
} else {
img = new BufferedImage(xSize, ySize, dataType);
}
img.setData(raster);
return img;
}
ColorSpace cs = ColorSpace.getInstance(CS_sRGB);
ColorModel cm;
if (numberOfBands == 3) {
cm = new ComponentColorModel(cs, false, false, ColorModel.OPAQUE, TYPE_BYTE);
} else if (numberOfBands == 4) {
cm = new ComponentColorModel(cs, true, false, ColorModel.TRANSLUCENT, TYPE_BYTE);
} else {
throw new IllegalArgumentException("Unsupported number of bands: " + numberOfBands);
}
return new BufferedImage(cm, raster, false, null);
}
/** ********************************************************************* */
public static void main(String[] args) {
{
Dataset hDataset;
Band hBand;
int i, iBand;
double[] adfGeoTransform = new double[6];
Driver hDriver;
Vector papszMetadata;
boolean bComputeMinMax = false, bSample = false;
boolean bShowGCPs = true, bShowMetadata = true;
boolean bStats = false, bApproxStats = true;
boolean bShowColorTable = true, bComputeChecksum = false;
boolean bReportHistograms = false;
boolean bShowRAT = true;
String pszFilename = null;
Vector papszFileList;
Vector papszExtraMDDomains = new Vector();
gdal.AllRegister();
args = gdal.GeneralCmdLineProcessor(args);
if (args.length < 1) {
Usage();
System.exit(0);
}
/* -------------------------------------------------------------------- */
/* Parse arguments. */
/* -------------------------------------------------------------------- */
for (i = 0; i < args.length; i++) {
if (args[i].equals("-mm")) bComputeMinMax = true;
else if (args[i].equals("-hist")) bReportHistograms = true;
else if (args[i].equals("-stats")) {
bStats = true;
bApproxStats = false;
} else if (args[i].equals("-approx_stats")) {
bStats = true;
bApproxStats = true;
} else if (args[i].equals("-nogcp")) bShowGCPs = false;
else if (args[i].equals("-noct")) bShowColorTable = false;
else if (args[i].equals("-nomd")) bShowMetadata = false;
else if (args[i].equals("-norat")) bShowRAT = false;
else if (args[i].equals("-checksum")) bComputeChecksum = true;
else if (args[i].equals("-mdd") && i + 1 < args.length)
papszExtraMDDomains.addElement(args[++i]);
else if (args[i].startsWith("-")) Usage();
else if (pszFilename == null) pszFilename = args[i];
else Usage();
}
if (pszFilename == null) Usage();
/* -------------------------------------------------------------------- */
/* Open dataset. */
/* -------------------------------------------------------------------- */
hDataset = gdal.Open(pszFilename, gdalconstConstants.GA_ReadOnly);
if (hDataset == null) {
System.err.println("GDALOpen failed - " + gdal.GetLastErrorNo());
System.err.println(gdal.GetLastErrorMsg());
// gdal.DumpOpenDatasets( stderr );
// gdal.DestroyDriverManager();
// gdal.DumpSharedList( null );
System.exit(1);
}
/* -------------------------------------------------------------------- */
/* Report general info. */
/* -------------------------------------------------------------------- */
hDriver = hDataset.GetDriver();
System.out.println("Driver: " + hDriver.getShortName() + "/" + hDriver.getLongName());
papszFileList = hDataset.GetFileList();
if (papszFileList.size() == 0) {
System.out.println("Files: none associated");
} else {
Enumeration e = papszFileList.elements();
System.out.println("Files: " + (String) e.nextElement());
while (e.hasMoreElements()) System.out.println(" " + (String) e.nextElement());
}
System.out.println("Size is " + hDataset.getRasterXSize() + ", " + hDataset.getRasterYSize());
/* -------------------------------------------------------------------- */
/* Report projection. */
/* -------------------------------------------------------------------- */
if (hDataset.GetProjectionRef() != null) {
SpatialReference hSRS;
String pszProjection;
pszProjection = hDataset.GetProjectionRef();
hSRS = new SpatialReference(pszProjection);
if (hSRS != null && pszProjection.length() != 0) {
String[] pszPrettyWkt = new String[1];
hSRS.ExportToPrettyWkt(pszPrettyWkt, 0);
System.out.println("Coordinate System is:");
System.out.println(pszPrettyWkt[0]);
// gdal.CPLFree( pszPrettyWkt );
} else System.out.println("Coordinate System is `" + hDataset.GetProjectionRef() + "'");
hSRS.delete();
}
/* -------------------------------------------------------------------- */
/* Report Geotransform. */
/* -------------------------------------------------------------------- */
hDataset.GetGeoTransform(adfGeoTransform);
{
if (adfGeoTransform[2] == 0.0 && adfGeoTransform[4] == 0.0) {
System.out.println("Origin = (" + adfGeoTransform[0] + "," + adfGeoTransform[3] + ")");
System.out.println(
"Pixel Size = (" + adfGeoTransform[1] + "," + adfGeoTransform[5] + ")");
} else {
System.out.println("GeoTransform =");
System.out.println(
" " + adfGeoTransform[0] + ", " + adfGeoTransform[1] + ", " + adfGeoTransform[2]);
System.out.println(
" " + adfGeoTransform[3] + ", " + adfGeoTransform[4] + ", " + adfGeoTransform[5]);
}
}
/* -------------------------------------------------------------------- */
/* Report GCPs. */
/* -------------------------------------------------------------------- */
if (bShowGCPs && hDataset.GetGCPCount() > 0) {
System.out.println("GCP Projection = " + hDataset.GetGCPProjection());
int count = 0;
Vector GCPs = new Vector();
hDataset.GetGCPs(GCPs);
Enumeration e = GCPs.elements();
while (e.hasMoreElements()) {
GCP gcp = (GCP) e.nextElement();
System.out.println(
"GCP[" + (count++) + "]: Id=" + gcp.getId() + ", Info=" + gcp.getInfo());
System.out.println(
" ("
+ gcp.getGCPPixel()
+ ","
+ gcp.getGCPLine()
+ ") ("
+ gcp.getGCPX()
+ ","
+ gcp.getGCPY()
+ ","
+ gcp.getGCPZ()
+ ")");
}
}
/* -------------------------------------------------------------------- */
/* Report metadata. */
/* -------------------------------------------------------------------- */
papszMetadata = hDataset.GetMetadata_List("");
if (bShowMetadata && papszMetadata.size() > 0) {
Enumeration keys = papszMetadata.elements();
System.out.println("Metadata:");
while (keys.hasMoreElements()) {
System.out.println(" " + (String) keys.nextElement());
}
}
Enumeration eExtraMDDDomains = papszExtraMDDomains.elements();
while (eExtraMDDDomains.hasMoreElements()) {
String pszDomain = (String) eExtraMDDDomains.nextElement();
papszMetadata = hDataset.GetMetadata_List(pszDomain);
if (bShowMetadata && papszMetadata.size() > 0) {
Enumeration keys = papszMetadata.elements();
System.out.println("Metadata (" + pszDomain + "):");
while (keys.hasMoreElements()) {
System.out.println(" " + (String) keys.nextElement());
}
}
}
/* -------------------------------------------------------------------- */
/* Report "IMAGE_STRUCTURE" metadata. */
/* -------------------------------------------------------------------- */
papszMetadata = hDataset.GetMetadata_List("IMAGE_STRUCTURE");
if (bShowMetadata && papszMetadata.size() > 0) {
Enumeration keys = papszMetadata.elements();
System.out.println("Image Structure Metadata:");
while (keys.hasMoreElements()) {
System.out.println(" " + (String) keys.nextElement());
}
}
/* -------------------------------------------------------------------- */
/* Report subdatasets. */
/* -------------------------------------------------------------------- */
papszMetadata = hDataset.GetMetadata_List("SUBDATASETS");
if (papszMetadata.size() > 0) {
System.out.println("Subdatasets:");
Enumeration keys = papszMetadata.elements();
while (keys.hasMoreElements()) {
System.out.println(" " + (String) keys.nextElement());
}
}
/* -------------------------------------------------------------------- */
/* Report geolocation. */
/* -------------------------------------------------------------------- */
papszMetadata = hDataset.GetMetadata_List("GEOLOCATION");
if (papszMetadata.size() > 0) {
System.out.println("Geolocation:");
Enumeration keys = papszMetadata.elements();
while (keys.hasMoreElements()) {
System.out.println(" " + (String) keys.nextElement());
}
}
/* -------------------------------------------------------------------- */
/* Report RPCs */
/* -------------------------------------------------------------------- */
papszMetadata = hDataset.GetMetadata_List("RPC");
if (papszMetadata.size() > 0) {
System.out.println("RPC Metadata:");
Enumeration keys = papszMetadata.elements();
while (keys.hasMoreElements()) {
System.out.println(" " + (String) keys.nextElement());
}
}
/* -------------------------------------------------------------------- */
/* Report corners. */
/* -------------------------------------------------------------------- */
System.out.println("Corner Coordinates:");
GDALInfoReportCorner(hDataset, "Upper Left ", 0.0, 0.0);
GDALInfoReportCorner(hDataset, "Lower Left ", 0.0, hDataset.getRasterYSize());
GDALInfoReportCorner(hDataset, "Upper Right", hDataset.getRasterXSize(), 0.0);
GDALInfoReportCorner(
hDataset, "Lower Right", hDataset.getRasterXSize(), hDataset.getRasterYSize());
GDALInfoReportCorner(
hDataset,
"Center ",
hDataset.getRasterXSize() / 2.0,
hDataset.getRasterYSize() / 2.0);
/* ==================================================================== */
/* Loop over bands. */
/* ==================================================================== */
for (iBand = 0; iBand < hDataset.getRasterCount(); iBand++) {
Double[] pass1 = new Double[1], pass2 = new Double[1];
double[] adfCMinMax = new double[2];
ColorTable hTable;
hBand = hDataset.GetRasterBand(iBand + 1);
/*if( bSample )
{
float[] afSample = new float[10000];
int nCount;
nCount = hBand.GetRandomRasterSample( 10000, afSample );
System.out.println( "Got " + nCount + " samples." );
}*/
int[] blockXSize = new int[1];
int[] blockYSize = new int[1];
hBand.GetBlockSize(blockXSize, blockYSize);
System.out.println(
"Band "
+ (iBand + 1)
+ " Block="
+ blockXSize[0]
+ "x"
+ blockYSize[0]
+ " Type="
+ gdal.GetDataTypeName(hBand.getDataType())
+ ", ColorInterp="
+ gdal.GetColorInterpretationName(hBand.GetRasterColorInterpretation()));
String hBandDesc = hBand.GetDescription();
if (hBandDesc != null && hBandDesc.length() > 0)
System.out.println(" Description = " + hBandDesc);
hBand.GetMinimum(pass1);
hBand.GetMaximum(pass2);
if (pass1[0] != null || pass2[0] != null || bComputeMinMax) {
System.out.print(" ");
if (pass1[0] != null) System.out.print("Min=" + pass1[0] + " ");
if (pass2[0] != null) System.out.print("Max=" + pass2[0] + " ");
if (bComputeMinMax) {
hBand.ComputeRasterMinMax(adfCMinMax, 0);
System.out.print(" Computed Min/Max=" + adfCMinMax[0] + "," + adfCMinMax[1]);
}
System.out.print("\n");
}
double dfMin[] = new double[1];
double dfMax[] = new double[1];
double dfMean[] = new double[1];
double dfStdDev[] = new double[1];
if (hBand.GetStatistics(bApproxStats, bStats, dfMin, dfMax, dfMean, dfStdDev)
== gdalconstConstants.CE_None) {
System.out.println(
" Minimum="
+ dfMin[0]
+ ", Maximum="
+ dfMax[0]
+ ", Mean="
+ dfMean[0]
+ ", StdDev="
+ dfStdDev[0]);
}
if (bReportHistograms) {
int[][] panHistogram = new int[1][];
int eErr =
hBand.GetDefaultHistogram(
dfMin, dfMax, panHistogram, true, new TermProgressCallback());
if (eErr == gdalconstConstants.CE_None) {
int iBucket;
int nBucketCount = panHistogram[0].length;
System.out.print(
" " + nBucketCount + " buckets from " + dfMin[0] + " to " + dfMax[0] + ":\n ");
for (iBucket = 0; iBucket < nBucketCount; iBucket++)
System.out.print(panHistogram[0][iBucket] + " ");
System.out.print("\n");
}
}
if (bComputeChecksum) {
System.out.println(" Checksum=" + hBand.Checksum());
}
hBand.GetNoDataValue(pass1);
if (pass1[0] != null) {
System.out.println(" NoData Value=" + pass1[0]);
}
if (hBand.GetOverviewCount() > 0) {
int iOverview;
System.out.print(" Overviews: ");
for (iOverview = 0; iOverview < hBand.GetOverviewCount(); iOverview++) {
Band hOverview;
if (iOverview != 0) System.out.print(", ");
hOverview = hBand.GetOverview(iOverview);
System.out.print(hOverview.getXSize() + "x" + hOverview.getYSize());
}
System.out.print("\n");
if (bComputeChecksum) {
System.out.print(" Overviews checksum: ");
for (iOverview = 0; iOverview < hBand.GetOverviewCount(); iOverview++) {
Band hOverview;
if (iOverview != 0) System.out.print(", ");
hOverview = hBand.GetOverview(iOverview);
System.out.print(hOverview.Checksum());
}
System.out.print("\n");
}
}
if (hBand.HasArbitraryOverviews()) {
System.out.println(" Overviews: arbitrary");
}
int nMaskFlags = hBand.GetMaskFlags();
if ((nMaskFlags & (gdalconstConstants.GMF_NODATA | gdalconstConstants.GMF_ALL_VALID))
== 0) {
Band hMaskBand = hBand.GetMaskBand();
System.out.print(" Mask Flags: ");
if ((nMaskFlags & gdalconstConstants.GMF_PER_DATASET) != 0)
System.out.print("PER_DATASET ");
if ((nMaskFlags & gdalconstConstants.GMF_ALPHA) != 0) System.out.print("ALPHA ");
if ((nMaskFlags & gdalconstConstants.GMF_NODATA) != 0) System.out.print("NODATA ");
if ((nMaskFlags & gdalconstConstants.GMF_ALL_VALID) != 0) System.out.print("ALL_VALID ");
System.out.print("\n");
if (hMaskBand != null && hMaskBand.GetOverviewCount() > 0) {
int iOverview;
System.out.print(" Overviews of mask band: ");
for (iOverview = 0; iOverview < hMaskBand.GetOverviewCount(); iOverview++) {
Band hOverview;
if (iOverview != 0) System.out.print(", ");
hOverview = hMaskBand.GetOverview(iOverview);
System.out.print(hOverview.getXSize() + "x" + hOverview.getYSize());
}
System.out.print("\n");
}
}
if (hBand.GetUnitType() != null && hBand.GetUnitType().length() > 0) {
System.out.println(" Unit Type: " + hBand.GetUnitType());
}
Vector papszCategories = hBand.GetRasterCategoryNames();
if (papszCategories.size() > 0) {
System.out.println(" Categories:");
Enumeration eCategories = papszCategories.elements();
i = 0;
while (eCategories.hasMoreElements()) {
System.out.println(" " + i + ": " + (String) eCategories.nextElement());
i++;
}
}
hBand.GetOffset(pass1);
if (pass1[0] != null && pass1[0].doubleValue() != 0) {
System.out.print(" Offset: " + pass1[0]);
}
hBand.GetScale(pass1);
if (pass1[0] != null && pass1[0].doubleValue() != 1) {
System.out.println(", Scale:" + pass1[0]);
}
papszMetadata = hBand.GetMetadata_List("");
if (bShowMetadata && papszMetadata.size() > 0) {
Enumeration keys = papszMetadata.elements();
System.out.println(" Metadata:");
while (keys.hasMoreElements()) {
System.out.println(" " + (String) keys.nextElement());
}
}
if (hBand.GetRasterColorInterpretation() == gdalconstConstants.GCI_PaletteIndex
&& (hTable = hBand.GetRasterColorTable()) != null) {
int count;
System.out.println(
" Color Table ("
+ gdal.GetPaletteInterpretationName(hTable.GetPaletteInterpretation())
+ " with "
+ hTable.GetCount()
+ " entries)");
if (bShowColorTable) {
for (count = 0; count < hTable.GetCount(); count++) {
System.out.println(" " + count + ": " + hTable.GetColorEntry(count));
}
}
}
RasterAttributeTable rat = hBand.GetDefaultRAT();
if (bShowRAT && rat != null) {
System.out.print("<GDALRasterAttributeTable ");
double[] pdfRow0Min = new double[1];
double[] pdfBinSize = new double[1];
if (rat.GetLinearBinning(pdfRow0Min, pdfBinSize)) {
System.out.print(
"Row0Min=\"" + pdfRow0Min[0] + "\" BinSize=\"" + pdfBinSize[0] + "\">");
}
System.out.print("\n");
int colCount = rat.GetColumnCount();
for (int col = 0; col < colCount; col++) {
System.out.println(" <FieldDefn index=\"" + col + "\">");
System.out.println(" <Name>" + rat.GetNameOfCol(col) + "</Name>");
System.out.println(" <Type>" + rat.GetTypeOfCol(col) + "</Type>");
System.out.println(" <Usage>" + rat.GetUsageOfCol(col) + "</Usage>");
System.out.println(" </FieldDefn>");
}
int rowCount = rat.GetRowCount();
for (int row = 0; row < rowCount; row++) {
System.out.println(" <Row index=\"" + row + "\">");
for (int col = 0; col < colCount; col++) {
System.out.println(" <F>" + rat.GetValueAsString(row, col) + "</F>");
}
System.out.println(" </Row>");
}
System.out.println("</GDALRasterAttributeTable>");
}
}
hDataset.delete();
/* Optional */
gdal.GDALDestroyDriverManager();
System.exit(0);
}
}