public LogicalRasterDataProvider(string fileName, IRasterBand[] rasterBands, object tag)
{
if (rasterBands == null || rasterBands.Length == 0)
{
throw new ArgumentNullException("rasterBands");
}
_tag = tag;
_fileNames = new string[] { fileName };
List <IRasterBand> bs = new List <IRasterBand>();
bool isFirst = true;
foreach (IRasterBand band in rasterBands)
{
if (isFirst)
{
_dataType = band.DataType;
_width = band.Width;
_height = band.Height;
_coordEnvelope = band.CoordEnvelope;
_coordType = band.RasterDataProvider.CoordType;
_spatialRef = band.SpatialRef;
_coordTransform = band.CoordTransform;
isFirst = false;
}
else
{
if (_dataType != band.DataType ||
_width != band.Width ||
_height != band.Height)
{
continue;
}
if (_coordType != null && _coordType != band.RasterDataProvider.CoordType)
{
continue;
}
if (_coordEnvelope != null && !CoordEnvelopeEquals(_coordEnvelope, band.CoordEnvelope))
{
continue;
}
if (_spatialRef != null && !_spatialRef.IsSame(band.SpatialRef))
{
continue;
}
}
bs.Add(band);
}
_rasterBands.AddRange(bs);
}
public void Transform(ISpatialReference srcSpatialRef, double[] srcXs, double[] srcYs, ISpatialReference dstSpatialRef)
{
using (IProjectionTransform transform = ProjectionTransformFactory.GetProjectionTransform(srcSpatialRef, dstSpatialRef))
{
if (!srcSpatialRef.IsSame(dstSpatialRef))
{
transform.Transform(srcXs, srcYs);
}
}
}
//private void button4_Click(object sender, EventArgs e)
//{
// ISpatialReference srcSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByPrjFile("WGS 1984.prj");
// srcSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByPrjFile("Mercator (sphere).prj");
// string proj4 = srcSpatialRef.ToProj4String();
// srcSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByProj4String(proj4);
//}
//private void button4_Click(object sender, EventArgs e)
//{
// TestFy3AVirrProjection fyp = new TestFy3AVirrProjection();
// Action<int, string> progressCallback = new Action<int, string>(OutProgress);
// fyp.DataReady(progressCallback);
// Stopwatch stopwatch = new Stopwatch();
// stopwatch.Start();
// fyp.TestFy3VIRR();
// stopwatch.Stop();
// WriteLine("数据投影{0}ms", stopwatch.ElapsedMilliseconds);
// stopwatch.Restart();
//}
private void TestPrj4Parser_Click(object sender, EventArgs e)
{
ISpatialReference srcSpatialRef = null;// SpatialReferenceFactory.GetSpatialReferenceByPrjFile("WGS 1984.prj");
string prjFile = "f:\\32600.prj";
srcSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByPrjFile("Mercator (sphere).prj");
string proj4 = srcSpatialRef.ToProj4String();
ISpatialReference inverSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByProj4String(proj4);
bool isSame = srcSpatialRef.IsSame(inverSpatialRef);
}
/// <summary>
/// Assignes selected projection and displays results
/// </summary>
public bool Assign(string filename, ISpatialReference proj)
{
var projWgs84 = new SpatialReference();
if (!projWgs84.ImportFromEpsg(4326))
{
MessageService.Current.Warn("Failed to initialize WGS84 coordinate system.");
return(false);
}
bool sameProj = proj.IsSame(projWgs84);
int count = 0;
bool success = false;
int rowIndex = dgv.Rows.Add();
_shapefile = new FeatureSet(filename);
Text = @"Assigning projection: " + Path.GetFileName(filename);
lblProjection.Text = @"Projection: " + proj.Name;
// it will be faster to assing new instance of class
// as ImportFromEPSG() is slow according to GDAL documentation
_shapefile.Projection.CopyFrom(proj);
if (!sameProj)
{
// we can't show preview on map without reprojection
if ((_shapefile.StartEditingShapes()))
{
if (_shapefile.ReprojectInPlace(projWgs84, ref count))
{
success = true;
}
}
}
else
{
success = true;
}
if (success)
{
AddShapefile(_shapefile);
return(true);
}
// no success in reprojection
_shapefile.Close();
return(false);
}
private void btnModify_Click(object sender, EventArgs e)
{
if (_spatialReference == null)
{
return;
}
_preSpatialReference = _spatialReference;
if (_spatialReference.ProjectionCoordSystem == null)
{
GeoCoordinateDefine geoCoordinateDefine = new GeoCoordinateDefine(_spatialReference, enumControlType.Modify);
geoCoordinateDefine.Text = "地理坐标系属性";
TryApplyGeo(geoCoordinateDefine);
if (geoCoordinateDefine.DialogResult == System.Windows.Forms.DialogResult.OK)
{
//IsSame()函数中没有对名字进行比较
if (!_spatialReference.IsSame(_preSpatialReference) ||
(_spatialReference.GeographicsCoordSystem.Name != _preSpatialReference.GeographicsCoordSystem.Name))
{
NeedSaveToFile();
}
}
}
else
{
PrjCoordinateDefine prjCoordinateDefine = new PrjCoordinateDefine(_spatialReference, enumControlType.Modify);
prjCoordinateDefine.Text = "投影坐标系属性";
TryApplyPrj(prjCoordinateDefine);
if (prjCoordinateDefine.DialogResult == System.Windows.Forms.DialogResult.OK)
{
if (!_spatialReference.IsSame(_preSpatialReference) ||
(_spatialReference.GeographicsCoordSystem.Name != _preSpatialReference.GeographicsCoordSystem.Name) ||
(_spatialReference.Name != _preSpatialReference.Name))
{
NeedSaveToFile();
}
}
}
}
private void CreateOverviewBmp(ISpatialReference spatialRef, int[] bandNos)
{
if (spatialRef == null)
{
spatialRef = SpatialReference.GetDefault();
}
if (_spatialRef == null || !_spatialRef.IsSame(spatialRef))
{
_spatialRef = spatialRef;
}
Bitmap bmp;
GetOverview(MainFile, _spatialRef, bandNos, out bmp, out _errorMsg);
OverViewBmp = bmp;
}
private void button18_Click(object sender, EventArgs e)
{
string wkt = "GEOGCS[\"等经纬度投影\",DATUM[\"D_WGS_1984\",SPHEROID[\"WGS_1984\",6378137,298.257223563]],PRIMEM[\"Greenwich\",0],UNIT[\"Degree\",0.017453292519943295]]";
wkt = "PROJCS[\"Hammer投影\",GEOGCS[\"GCS_WGS_1984\",DATUM[\"D_WGS_1984\",SPHEROID[\"WGS_1984\",6378137,298.257223563]],PRIMEM[\"Greenwich\",0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Hammer-Aitoff (world)\"]PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],PARAMETER[\"central_meridian\",105],UNIT[\"Meter\",1]]";
ISpatialReference srcSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByWKT(wkt, enumWKTSource.EsriPrjFile);
string proj4 = srcSpatialRef.ToProj4String();
ISpatialReference inverSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByProj4String(proj4);
inverSpatialRef.IsSame(srcSpatialRef);
IProjectionTransform tr = ProjectionTransformFactory.GetProjectionTransform(srcSpatialRef, SpatialReference.GetDefault());
double[] x = new double[] { 1534910 };
double[] y = new double[] { 4255978 };
x = new double[] { 121.913 };
y = new double[] { 38.957 };
tr.InverTransform(x, y);
tr.Transform(x, y);
}
public static bool IsDialectOf(this IProjectionDatabase projectionDatabase, ISpatialReference multiDefinedProj, ISpatialReference testProj)
{
if (multiDefinedProj.IsEmpty)
{
return(false);
}
var db = projectionDatabase;
if (db == null)
{
return(false);
}
var cs = db.GetCoordinateSystem(multiDefinedProj, ProjectionSearchType.Enhanced);
if (cs == null)
{
return(false);
}
db.ReadDialects(cs);
foreach (var dialect in cs.Dialects)
{
var projTemp = new SpatialReference();
if (!projTemp.ImportFromAutoDetect(dialect))
{
continue;
}
if (testProj.IsSame(projTemp))
{
return(true);
}
}
return(false);
}
/// <summary>
/// 根据给出的经纬度数据集或者投影坐标数据集，计算其是否在指定的范围内，并且计算出有效率，以及实际输出范围
/// </summary>
/// <param name="xs"></param>
/// <param name="ys"></param>
/// <param name="validEnv"></param>
/// <param name="oSpatialRef"></param>
/// <param name="tSpatialRef"></param>
/// <param name="validRate"></param>
/// <param name="outEnv"></param>
/// <returns></returns>
public bool VaildEnvelope(double[] xs, double[] ys, PrjEnvelope validEnv, ISpatialReference oSpatialRef, ISpatialReference tSpatialRef, out double validRate, out PrjEnvelope outEnv)
{
if (validEnv == null || validEnv.IsEmpty)
{
throw new ArgumentNullException("validEnv", "参数[有效范围]不能为空");
}
if (tSpatialRef == null)
{
tSpatialRef = SpatialReference.GetDefault();
}
if (oSpatialRef == null)
{
oSpatialRef = SpatialReference.GetDefault();
}
using (IProjectionTransform transform = ProjectionTransformFactory.GetProjectionTransform(oSpatialRef, tSpatialRef))
{
if (!oSpatialRef.IsSame(tSpatialRef))
{
transform.Transform(xs, ys);
}
bool isLatLong = (tSpatialRef.ProjectionCoordSystem == null && tSpatialRef.GeographicsCoordSystem != null);
return(PrjEnvelope.HasValidEnvelope(xs, ys, validEnv, out validRate, out outEnv));
}
}
private static void ConvertHdf4To5(Hdf4FileAttrs hdf4FileAttrs, string f5name,
Action <string, int, int> messageAction, SEnvelope outenvelope, float dstResolution,
ISpatialReference dstSpatialReference)
{
try
{
// Create a new file using H5F_ACC_TRUNC access,
// default file creation properties, and default file
// access properties.
H5FileId fileId = H5F.create(f5name, H5F.CreateMode.ACC_TRUNC);
int nxf5 = hdf4FileAttrs.Hdf4FileAttr.XDim;
int nyf5 = hdf4FileAttrs.Hdf4FileAttr.YDim;
int rank = 2;
//测试读取的科学数据集及其属性
int sdscount = hdf4FileAttrs.Hdf4FileAttr.DataFields.Count;
SEnvelope envelopeNew = null;
UInt16[] rows = null; //正向查找表
UInt16[] cols = null; //正向查找表
Size srcStepSize = Size.Empty;
Size outSize = Size.Empty;
try
{
for (int k = 0; k < sdscount; k++)
{
ConvertHdf4To5BySds(hdf4FileAttrs, messageAction, k, nyf5, nxf5, rank, fileId, outenvelope, dstResolution, dstSpatialReference, ref rows, ref cols, ref srcStepSize, ref outSize);
if (envelopeNew == null && dstSpatialReference != null && outenvelope != null)
{
envelopeNew = outenvelope;
}
}
if (envelopeNew != null)
{
hdf4FileAttrs.RefreshPointString(envelopeNew);
}
}
finally
{
rows = null;
cols = null;
srcStepSize = Size.Empty;
GC.Collect();
}
HDFAttributeDef[] attributeDef5s = hdf4FileAttrs.GetHDFAttributeDefs();
List <HDFAttributeDef> updateFileAttrs = new List <HDFAttributeDef>();
updateFileAttrs.AddRange(attributeDef5s);
if (dstSpatialReference != null && dstSpatialReference.IsSame(SpatialReference.GetDefault()))
{
//投影信息
string projtype = "Geopraphic Latitude longtitude";
HDFAttributeDef projecttype = new HDFAttributeDef("Projection Type", typeof(string), projtype.Length, projtype);
updateFileAttrs.Add(projecttype);
//写四角坐标信息
HDFAttributeDef lefttopY = new HDFAttributeDef("Left-Top Latitude", typeof(float), 1, new float[] { (float)outenvelope.YMax });
updateFileAttrs.Add(lefttopY);
HDFAttributeDef lefttopX = new HDFAttributeDef("Left-Top Longtitude", typeof(float), 1, new float[] { (float)outenvelope.XMin });
updateFileAttrs.Add(lefttopX);
HDFAttributeDef boottomrightY = new HDFAttributeDef("Bottom-Right Latitude", typeof(float), 1, new float[] { (float)outenvelope.YMin });
updateFileAttrs.Add(boottomrightY);
HDFAttributeDef boottomrightX = new HDFAttributeDef("Bottom-Right Longtitude", typeof(float), 1, new float[] { (float)outenvelope.XMax });
updateFileAttrs.Add(boottomrightX);
HDFAttributeDef xResolution = new HDFAttributeDef("Longtitude Resolution", typeof(float), 1, new float[] { (float)dstResolution });
updateFileAttrs.Add(xResolution);
HDFAttributeDef yResolution = new HDFAttributeDef("Latitude Resolution", typeof(float), 1, new float[] { (float)dstResolution });
updateFileAttrs.Add(yResolution);
}
foreach (HDFAttributeDef attributeDef5 in updateFileAttrs)
{
WriteHdfAttributes.WriteHdfAttribute(fileId, attributeDef5);
}
H5F.close(fileId);
}
catch (Exception ex)
{
throw new Exception("拼接Hdf4时出错，具体信息：" + ex.Message, ex);
}
}
private static void ConvertHdf4To5BySds <T>(Hdf4FileAttrs hdf4FileAttrs, int nyf5, int nxf5, int k, int rank,
H5FileId fileId, string sdName, HDF4Helper.DataTypeDefinitions dtaDefinitions, Action <string, int, int> messageAction,
SEnvelope envelopeNew, T fillValue, float dstResolution, ISpatialReference dstSpatialReference, ref UInt16[] rows, ref UInt16[] cols, ref Size srcStepSize, ref Size outSize)
{
T[,] data = new T[nyf5, nxf5];
H5DataSetId dsetId = null;
T[,] dataNew = null;
SDataByProject <T> dataByProject = null;
try
{
for (int i = 0; i < hdf4FileAttrs.Count; i++)
{
Hdf4FileAttr hdf4FileAttr = hdf4FileAttrs[i];
if (messageAction != null)
{
messageAction(String.Format("正在转换数据集 {0}", sdName), k, i);
}
H4SDS sd = hdf4FileAttr.H4File.Datasets[k];
GetDataByHdf4(sd, rank, hdf4FileAttr, data);
}
dataNew = data;
if (outSize.IsEmpty)
{
outSize = new Size(nxf5, nyf5);
}
if (dstSpatialReference != null && dstSpatialReference.IsSame(SpatialReference.GetDefault()))
{
if (rows == null && cols == null)
{
PrjEnvelope srcEnvelope = new PrjEnvelope(hdf4FileAttrs.Hdf4FileAttr.Envelope.XMin, hdf4FileAttrs.Hdf4FileAttr.Envelope.XMax, hdf4FileAttrs.Hdf4FileAttr.Envelope.YMin, hdf4FileAttrs.Hdf4FileAttr.Envelope.YMax);
PrjEnvelope outenvelpoe = new PrjEnvelope(envelopeNew.XMin, envelopeNew.XMax, envelopeNew.YMin, envelopeNew.YMax);
FilePrjSettings prjSetting = new FilePrjSettings();
prjSetting.OutEnvelope = outenvelpoe;
prjSetting.OutResolutionX = dstResolution;
prjSetting.OutResolutionY = dstResolution;
outSize = prjSetting.OutSize;
Size inSize = new Size(hdf4FileAttrs.Hdf4FileAttr.XDim, hdf4FileAttrs.Hdf4FileAttr.YDim);
float dstResoultion = dstResolution;
float srcResoultionX = (float)(hdf4FileAttrs.Hdf4FileAttr.CellWidth);
float srcResoultionY = (float)(hdf4FileAttrs.Hdf4FileAttr.CellHeight);
dataByProject = GetDataByProject <T>(dataNew, srcEnvelope, outenvelpoe, inSize, outSize, dstResoultion, srcResoultionX, srcResoultionY, fillValue, dstSpatialReference, out rows, out cols, out srcStepSize);
}
else
{
T[,] dstData = new T[outSize.Height, outSize.Width];
dataByProject = DoProject <T>(dataNew, fillValue, ref outSize, ref srcStepSize, dstData, rows, cols);
}
if (dataByProject != null)
{
dataNew = dataByProject.Data;
}
}
long[] dims = new long[rank];
dims[0] = Convert.ToInt64(outSize.Height);
dims[1] = Convert.ToInt64(outSize.Width);
H5DataSpaceId dspaceId = H5S.create_simple(rank, dims);
H5T.H5Type h5Type = Utility.GetH5Type(dtaDefinitions);
// Define datatype for the data in the file.
H5DataTypeId dtypeId = H5T.copy(h5Type);
// Create the data set DATASETNAME.
dsetId = H5D.create(fileId, sdName, dtypeId, dspaceId);
// Write the one-dimensional data set array
H5D.write(dsetId, new H5DataTypeId(h5Type), new H5Array <T>(dataNew));//H5A
HDFAttributeDef[] attributeDef5s = hdf4FileAttrs[0].DatasetsAttributeDefs[k];
foreach (HDFAttributeDef attributeDef5 in attributeDef5s)
{
WriteHdfAttributes.WriteHdfAttribute(dsetId, attributeDef5);
}
}
finally
{
// Close dataset and file.
if (dsetId != null)
{
H5D.close(dsetId);
}
if (data != null)
{
data = null;
}
if (dataNew != null)
{
dataNew = null;
}
GC.Collect();
}
}
/// <summary>
/// Does the reprojection work
/// </summary>
private void DoReprojection(IEnumerable <string> filenames, ISpatialReference projection, bool inPlace)
{
var report = new TesterReportForm();
report.InitProgress(projection);
var files = new List <string>();
int count = 0; // number of successfully reprojected shapefiles
foreach (string filename in filenames)
{
var layer = GeoSource.Open(filename) as ILayerSource;
if (layer == null)
{
continue;
}
ILayerSource layerNew = null;
if (projection.IsSame(layer.Projection))
{
report.AddFile(layer.Filename, projection.Name, ProjectionOperaion.SameProjection, "");
files.Add(layer.Filename);
}
else
{
TestingResult result = _reprojectingService.Reproject(layer, out layerNew, projection, report);
if (result == TestingResult.Ok || result == TestingResult.Substituted)
{
var oper = result == TestingResult.Ok
? ProjectionOperaion.Reprojected
: ProjectionOperaion.Substituted;
string newName = layerNew == null ? "" : layerNew.Filename;
report.AddFile(layer.Filename, layer.Projection.Name, oper, newName);
files.Add(newName == "" ? layer.Filename : newName);
count++;
}
else
{
var operation = result == TestingResult.Error
? ProjectionOperaion.FailedToReproject
: ProjectionOperaion.Skipped;
report.AddFile(layer.Filename, layer.Projection.Name, ProjectionOperaion.Skipped, "");
}
}
layer.Close();
if (layerNew != null)
{
layerNew.Close();
}
}
report.ShowReport(projection, "Reprojection results:", ReportType.Loading);
IEnumerable <string> names = _context.Layers.Select(l => l.Filename).ToList();
names = files.Except(names);
if (count == 0)
{
MessageService.Current.Info("No files to add to the map.");
return;
}
if (!projection.IsSame(_context.Map.Projection))
{
MessageService.Current.Info(
"Chosen projection is different from the project one. The layers can't be added to map.");
return;
}
if (!names.Any())
{
MessageService.Current.Info("No files to add to the map.");
return;
}
if (MessageService.Current.Ask("Do you want to add layers to the project?"))
{
//_context.Layers.StartAddingSession();
foreach (string filename in names)
{
var ds = GeoSource.Open(filename);
var layer = LayerSourceHelper.ConvertToLayer(ds);
_context.Layers.Add(layer);
}
//_context.Layers.StopAddingSession();
}
}
