本文整理汇总了C#中OSGeo.GDAL.Dataset类的典型用法代码示例。如果您正苦于以下问题：C# Dataset类的具体用法？C# Dataset怎么用？C# Dataset使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
Dataset类属于OSGeo.GDAL命名空间，在下文中一共展示了Dataset类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: RasterizeGdbFeature
public static void RasterizeGdbFeature(string gdbPath, string inputeFeatureLayer, out Dataset outputDataset, string fieldName, double rasterCellSize)
{
ReadFeature readFeature = new ReadFeature(gdbPath, inputeFeatureLayer);
Layer layer = readFeature.GetFeatureLayer();
ConversionGdal.ConvertFeatureToRaster(layer, out outputDataset, rasterCellSize, fieldName);
}示例2: AutoCreateWarpedVRT
public static Dataset AutoCreateWarpedVRT(Dataset src_ds, string src_wkt, string dst_wkt, ResampleAlg eResampleAlg, double maxerror)
{
IntPtr cPtr = GdalPINVOKE.AutoCreateWarpedVRT(Dataset.getCPtr(src_ds), src_wkt, dst_wkt, (int)eResampleAlg, maxerror);
Dataset ret = (cPtr == IntPtr.Zero) ? null : new Dataset(cPtr, true, ThisOwn_true());
if (GdalPINVOKE.SWIGPendingException.Pending) throw GdalPINVOKE.SWIGPendingException.Retrieve();
return ret;
}示例3: GDALInfoGetPosition
private static void GDALInfoGetPosition(Dataset ds, double x, double y, out double dfGeoX, out double dfGeoY)
{
double[] adfGeoTransform = new double[6];
ds.GetGeoTransform(adfGeoTransform);
dfGeoX = adfGeoTransform[0] + adfGeoTransform[1] * x + adfGeoTransform[2] * y;
dfGeoY = adfGeoTransform[3] + adfGeoTransform[4] * x + adfGeoTransform[5] * y;
}示例4: GDAL_Info
public GDAL_Info(Dataset ds)
{
Projection = ds.GetProjectionRef();
Resolution = new Size(ds.RasterXSize, ds.RasterYSize);
Bands = new DataBandInfo[ds.RasterCount];
for (int i = 0; i < ds.RasterCount; i++)
{
Band band = ds.GetRasterBand(i + 1);
Bands[i] = new DataBandInfo();
int temp;
band.GetMaximum(out Bands[i].MaxValue, out temp);
band.GetMaximum(out Bands[i].MinValue, out temp);
band.GetNoDataValue(out Bands[i].NODATAValue, out temp);
ColorInterp clr = band.GetRasterColorInterpretation();
switch (clr)
{
case ColorInterp.GCI_RedBand:
Bands[i].Name = "RedBand";
Bands[i].Image = Resource1.red_layer;
BppType += "R";
break;
case ColorInterp.GCI_GreenBand:
Bands[i].Name = "GreenBand";
Bands[i].Image = Resource1.green_layer;
BppType += "G";
break;
case ColorInterp.GCI_BlueBand:
Bands[i].Name = "BlueBand";
Bands[i].Image = Resource1.blue_layer;
BppType += "B";
break;
default:
Bands[i].Name = clr.ToString();
Bands[i].Image = null;
BppType += "?";
break;
}
BppType += "[" + Gdal.GetDataTypeName(band.DataType) + "]";
Bpp += (ushort)Gdal.GetDataTypeSize(band.DataType);
if (i + 1 < ds.RasterCount)
BppType += ",";
}
BppType += " (" + Bpp + ")";
Driver = ds.GetDriver().LongName;
Metadata = ds.GetMetadata("");
ImgMetadata = ds.GetMetadata("IMAGE_STRUCTURE");
SubDSMetadata = ds.GetMetadata("SUBDATASETS");
GeoLocMetadata = ds.GetMetadata("GEOLOCATION");
GDALInfoGetPosition(ds, 0.0, 0.0, out UpperLeftX, out UpperLeftY);
GDALInfoGetPosition(ds, 0.0, ds.RasterYSize, out UpperRightX, out UpperRightY);
GDALInfoGetPosition(ds, ds.RasterXSize, 0.0, out LowerLeftX, out LowerLeftY);
GDALInfoGetPosition(ds, ds.RasterXSize, ds.RasterYSize, out LowerRightX, out LowerRightY);
GDALInfoGetPosition(ds, ds.RasterXSize / 2, ds.RasterYSize / 2, out CenterX, out CenterY);
}示例5: GdalImage
/// <summary>
///
/// </summary>
/// <param name="filename"></param>
/// <param name="ds"></param>
/// <param name="band"></param>
internal GdalImage(string filename, Dataset ds, ImageBandType band)
{
_dataset = ds;
if (band == ImageBandType.ARGB)
{
using (Band bnd = ds.GetRasterBand(1))
{
bnd.SetRasterColorInterpretation(ColorInterp.GCI_AlphaBand);
}
using (Band bnd = ds.GetRasterBand(2))
{
bnd.SetRasterColorInterpretation(ColorInterp.GCI_RedBand);
}
using (Band bnd = ds.GetRasterBand(3))
{
bnd.SetRasterColorInterpretation(ColorInterp.GCI_GreenBand);
}
using (Band bnd = ds.GetRasterBand(4))
{
bnd.SetRasterColorInterpretation(ColorInterp.GCI_BlueBand);
}
}
else if (band == ImageBandType.RGB)
{
using (Band bnd = ds.GetRasterBand(1))
{
bnd.SetRasterColorInterpretation(ColorInterp.GCI_RedBand);
}
using (Band bnd = ds.GetRasterBand(2))
{
bnd.SetRasterColorInterpretation(ColorInterp.GCI_GreenBand);
}
using (Band bnd = ds.GetRasterBand(3))
{
bnd.SetRasterColorInterpretation(ColorInterp.GCI_BlueBand);
}
}
else if (band == ImageBandType.PalletCoded)
{
using (Band bnd = ds.GetRasterBand(3))
{
bnd.SetRasterColorInterpretation(ColorInterp.GCI_PaletteIndex);
}
}
else
{
using (Band bnd = ds.GetRasterBand(3))
{
bnd.SetRasterColorInterpretation(ColorInterp.GCI_GrayIndex);
}
}
Filename = filename;
WorldFile = new WorldFile { Affine = new double[6] };
Gdal.AllRegister();
}示例6: getCPtrAndSetReference
public static HandleRef getCPtrAndSetReference(Dataset obj, object parent) {
if (obj != null)
{
obj.swigParentRef = parent;
return obj.swigCPtr;
}
else
{
return new HandleRef(null, IntPtr.Zero);
}
}示例7: getCPtrAndDisown
public static HandleRef getCPtrAndDisown(Dataset obj, object parent) {
if (obj != null)
{
obj.swigCMemOwn = false;
obj.swigParentRef = parent;
return obj.swigCPtr;
}
else
{
return new HandleRef(null, IntPtr.Zero);
}
}示例8: GetPreview
protected virtual void GetPreview(Dataset dataset, Size size, Graphics g,
Envelope displayBbox, ProjectionInfo mapProjection, Map map)
#endif
{
if (!NeedRotation(dataset))
{
GetNonRotatedPreview(dataset, size, g, displayBbox, mapProjection);
return;
}
var geoTransform = new GeoTransform(dataset);
Bitmap bitmap = null;
var bitmapTL = new Point();
//Coordinate imageTL = new Coordinate(), imageBR = new Coordinate();
//int bitmapWidth, bitmapHeight;
var bitmapSize = new Size();
const int pixelSize = 3; //Format24bppRgb = byte[b,g,r]
if (dataset != null)
{
//check if image is in bounding box
if ((displayBbox.MinX > _envelope.MaxX) || (displayBbox.MaxX < _envelope.MinX)
|| (displayBbox.MaxY < _envelope.MinY) || (displayBbox.MinY > _envelope.MaxY))
return;
// init histo
Histogram = new List<int[]>();
for (int i = 0; i < Bands + 1; i++)
Histogram.Add(new int[256]);
// bounds of section of image to be displayed
//var left = Math.Max(displayBbox.MinX, _envelope.MinX);
//var top = Math.Min(displayBbox.MaxY, _envelope.MaxY);
//var right = Math.Min(displayBbox.MaxX, _envelope.MaxX);
//var bottom = Math.Max(displayBbox.MinY, _envelope.MinY);
var trueImageBbox = displayBbox.Intersection(_envelope);
// put display bounds into current projection
Envelope shownImageBbox;
if (Transform != null)
{
#if !DotSpatialProjections
Transform.MathTransform.Invert();
shownImageBbox = GeometryTransform.TransformBox(trueImageBbox, Transform.MathTransform);
Transform.MathTransform.Invert();
#else
shownImageBbox = GeometryTransform.TransformBox(trueImageBbox, _transform.Source, _transform.Target);
#endif
}
else
{
shownImageBbox = trueImageBbox;
}
// find min/max x and y pixels needed from image
var g2i = geoTransform.GroundToImage(shownImageBbox).Intersection(new Envelope(0, _imageSize.Width, 0, _imageSize.Height));
var gdalImageRect = ToRectangle(g2i);
var displayImageSize = gdalImageRect.Size;
//// find ground coordinates of image pixels
//var groundBR = geoTransform.ImageToGround(imageBR);
//var groundTL = geoTransform.ImageToGround(imageTL);
// convert ground coordinates to map coordinates to figure out where to place the bitmap
var bitmapBR = new Point((int)map.WorldToImage(trueImageBbox.BottomRight()).X + 1,
(int)map.WorldToImage(trueImageBbox.BottomRight()).Y + 1);
bitmapTL = new Point((int)map.WorldToImage(trueImageBbox.TopLeft()).X,
(int)map.WorldToImage(trueImageBbox.TopLeft()).Y);
bitmapSize.Width = bitmapBR.X - bitmapTL.X;
bitmapSize.Height = bitmapBR.Y - bitmapTL.Y;
// check to see if image is on its side
if (bitmapSize.Width > bitmapSize.Height && displayImageSize.Width < displayImageSize.Height)
{
displayImageSize.Width = bitmapSize.Height;
displayImageSize.Height = bitmapSize.Width;
}
else
{
displayImageSize.Width = bitmapSize.Width;
displayImageSize.Height = bitmapSize.Height;
}
// scale
var bitScalar = GetBitScalar();
// 0 pixels in length or height, nothing to display
if (bitmapSize.Width < 1 || bitmapSize.Height < 1)
return;
//initialize bitmap
BitmapData bitmapData;
bitmap = InitializeBitmap(bitmapSize, PixelFormat.Format24bppRgb, out bitmapData);
//.........这里部分代码省略.........
示例9: ReleaseManagedResources
protected override void ReleaseManagedResources()
{
_factory = null;
//_geoTransform = null;
_gdalDataset.Dispose();
_gdalDataset = null;
base.ReleaseManagedResources();
}示例10: GetNonRotatedPreview
private void GetNonRotatedPreview(Dataset dataset, Size size, Graphics g,
Envelope bbox, ProjectionInfo mapProjection)
#endif
{
double[] geoTrans = new double[6];
dataset.GetGeoTransform(geoTrans);
// default transform
if (!_useRotation && !HaveSpot || (geoTrans[0] == 0 && geoTrans[3] == 0))
geoTrans = new[] { 999.5, 1, 0, 1000.5, 0, -1 };
Bitmap bitmap = null;
var geoTransform = new GeoTransform(geoTrans);
int DsWidth = 0;
int DsHeight = 0;
BitmapData bitmapData = null;
double[] intVal = new double[Bands];
int p_indx;
double bitScalar = 1.0;
double dblImginMapW = 0, dblImginMapH = 0, dblLocX = 0, dblLocY = 0;
int iPixelSize = 3; //Format24bppRgb = byte[b,g,r]
if (dataset != null)
{
//check if image is in bounding box
if ((bbox.MinX > _envelope.MaxX) || (bbox.MaxX < _envelope.MinX)
|| (bbox.MaxY < _envelope.MinY) || (bbox.MinY > _envelope.MaxY))
return;
DsWidth = _imageSize.Width;
DsHeight = _imageSize.Height;
Histogram = new List<int[]>();
for (int i = 0; i < Bands + 1; i++)
Histogram.Add(new int[256]);
double left = Math.Max(bbox.MinX, _envelope.MinX);
double top = Math.Min(bbox.MaxY, _envelope.MaxY);
double right = Math.Min(bbox.MaxX, _envelope.MaxX);
double bottom = Math.Max(bbox.MinY, _envelope.MinY);
double x1 = Math.Abs(geoTransform.PixelX(left));
double y1 = Math.Abs(geoTransform.PixelY(top));
double imgPixWidth = geoTransform.PixelXwidth(right - left);
double imgPixHeight = geoTransform.PixelYwidth(bottom - top);
//get screen pixels image should fill
double dblBBoxW = bbox.Width;
double dblBBoxtoImgPixX = imgPixWidth / dblBBoxW;
dblImginMapW = size.Width * dblBBoxtoImgPixX * geoTransform.HorizontalPixelResolution;
double dblBBoxH = bbox.Height;
double dblBBoxtoImgPixY = imgPixHeight / dblBBoxH;
dblImginMapH = size.Height * dblBBoxtoImgPixY * -geoTransform.VerticalPixelResolution;
if ((dblImginMapH == 0) || (dblImginMapW == 0))
return;
// ratios of bounding box to image ground space
double dblBBoxtoImgX = size.Width / dblBBoxW;
double dblBBoxtoImgY = size.Height / dblBBoxH;
// set where to display bitmap in Map
if (bbox.MinX != left)
{
if (bbox.MaxX != right)
dblLocX = (_envelope.MinX - bbox.MinX) * dblBBoxtoImgX;
else
dblLocX = size.Width - dblImginMapW;
}
if (bbox.MaxY != top)
{
if (bbox.MinY != bottom)
dblLocY = (bbox.MaxY - _envelope.MaxY) * dblBBoxtoImgY;
else
dblLocY = size.Height - dblImginMapH;
}
bitScalar = GetBitScalar();
try
{
bitmap = new Bitmap((int)Math.Round(dblImginMapW), (int)Math.Round(dblImginMapH),
PixelFormat.Format24bppRgb);
bitmapData =
bitmap.LockBits(
new Rectangle(0, 0, (int)Math.Round(dblImginMapW), (int)Math.Round(dblImginMapH)),
ImageLockMode.ReadWrite, bitmap.PixelFormat);
byte cr = _noDataInitColor.R;
byte cg = _noDataInitColor.G;
byte cb = _noDataInitColor.B;
//
Double[] noDataValues = new Double[Bands];
Double[] scales = new Double[Bands];
ColorTable colorTable = null;
//.........这里部分代码省略.........
示例11: GdalRasterLayer
/// <summary>
/// initialize a Gdal based raster layer
/// </summary>
/// <param name="strLayerName">Name of layer</param>
/// <param name="imageFilename">location of image</param>
public GdalRasterLayer(string strLayerName, string imageFilename)
{
SpotPoint = new PointF(0, 0);
Projection = "";
BitDepth = 8;
NonSpotGain = new double[] {1, 1, 1, 1};
SpotGain = new double[] {1, 1, 1, 1};
Gain = new double[] {1, 1, 1, 1};
NonSpotGamma = 1;
SpotGamma = 1;
Gamma = 1;
TransparentColor = Color.Empty;
ColorCorrect = true;
LayerName = strLayerName;
Filename = imageFilename;
//TilingSize = new Size(256, 128);
Gdal.AllRegister();
try
{
_gdalDataset = Gdal.OpenShared(Filename, Access.GA_ReadOnly);
// have gdal read the projection
Projection = _gdalDataset.GetProjectionRef();
// no projection info found in the image...check for a prj
if (Projection == "" &&
File.Exists(imageFilename.Substring(0, imageFilename.LastIndexOf(".", StringComparison.CurrentCultureIgnoreCase)) + ".prj"))
{
Projection =
File.ReadAllText(imageFilename.Substring(0, imageFilename.LastIndexOf(".", StringComparison.CurrentCultureIgnoreCase)) + ".prj");
}
_imageSize = new Size(_gdalDataset.RasterXSize, _gdalDataset.RasterYSize);
_envelope = GetExtent();
HistoBounds = new Rectangle((int)_envelope.MinX, (int)_envelope.MinY, (int)_envelope.Width,
(int)_envelope.Height);
Bands = _gdalDataset.RasterCount;
}
catch (Exception ex)
{
_gdalDataset = null;
throw new Exception("Couldn't load " + imageFilename + "\n\n" + ex.Message + ex.InnerException);
}
}示例12: NeedRotation
private bool NeedRotation(Dataset dataset)
{
if (UseRotation)
return true;
if (Transform != null)
return true;
if (HaveSpot)
return true;
var geoTransform = new GeoTransform(dataset);
return geoTransform.IsScaling || geoTransform.IsRotating;
}示例13: ReadHeader
private void ReadHeader()
{
try
{
_dataset = Gdal.Open(Filename, Access.GA_Update);
}
catch
{
try
{
_dataset = Gdal.Open(Filename, Access.GA_ReadOnly);
}
catch (Exception ex)
{
throw new GdalException(ex.ToString());
}
}
Init(_dataset.RasterXSize, _dataset.RasterYSize);
NumBands = _dataset.RasterCount;
WorldFile = new WorldFile { Affine = new double[6] };
double[] test = new double[6];
_dataset.GetGeoTransform(test);
Bounds = new RasterBounds(Height, Width, test);
WorldFile.Affine = test;
DoClose();
}示例14: ReadHeader
private void ReadHeader()
{
_dataset = Helpers.Open(Filename);
Init(_dataset.RasterXSize, _dataset.RasterYSize);
NumBands = _dataset.RasterCount;
WorldFile = new WorldFile { Affine = new double[6] };
double[] test = new double[6];
_dataset.GetGeoTransform(test);
Bounds = new RasterBounds(Height, Width, test);
WorldFile.Affine = test;
Close();
}示例15: CloseFile
public override void CloseFile()
{
if (dataset != null)
{
dataset.Dispose();
dataset = null;
}
}