private void TryCreateSpatialRef()
{
try
{
_projectionRef = Dataset.GetProjectionRef();
if (!string.IsNullOrWhiteSpace(_projectionRef))
{
_spatialRef = SpatialReferenceFactory.GetSpatialReferenceByWKT(_projectionRef, enumWKTSource.EsriPrjFile);
}
if (string.IsNullOrWhiteSpace(_projectionRef))
{
TryReadSpatialRefFromSecondaryFile();
}
if (_spatialRef == null)
{
_coordType = enumCoordType.Raster;
}
else
{
_coordType = _spatialRef.ProjectionCoordSystem != null ? enumCoordType.PrjCoord : enumCoordType.GeoCoord;
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
protected override void FillEntityToCotrols()
{
if (_isNew)
{
Text = "新建空间要素类...";
if (_dataset != null)
{
FillDataset(_dataset);
}
return;
}
else
{
Text = "编辑空间要素类属性...";
}
SpatialFeatureClass ds = _entity as SpatialFeatureClass;
if (ds.SpatialFeatureDataset != null)
{
FillDataset(ds.SpatialFeatureDataset);
}
txtName.Text = _entity.Name;
txtDecription.Text = _entity.Description;
txtMapScale.Value = ds.MapScale;
txtSource.Text = ds.Source;
if (ds.SpatialRef != null)
{
ISpatialReference sref = SpatialReferenceFactory.GetSpatialReferenceByWKT(ds.SpatialRef, enumWKTSource.EsriPrjFile);
ucSpatialRef1.SpatialReference = sref;
}
}
public void ParserTiff()
{
string spreftxt = File.ReadAllText("f:\\2.prj");
ISpatialReference spref = SpatialReferenceFactory.GetSpatialReferenceByWKT(spreftxt, enumWKTSource.GDAL);
Assert.NotNull(spref);
Console.Write(spref.ToWKTString());
}
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 FetClassWriterDb(ICatalogItem locationItem)
{
if (locationItem is CatalogDatabaseConn)
{
_dbConn = DbConnectionFactory.CreateDbConnection(((locationItem as CatalogDatabaseConn).Tag as SpatialDatabaseConn).ConnectionString);
}
else if (locationItem is CatalogFeatureDataset)
{
CatalogFeatureDataset cfd = locationItem as CatalogFeatureDataset;
SpatialFeatureDataset sfd = cfd.Tag as SpatialFeatureDataset;
_dbConn = DbConnectionFactory.CreateDbConnection((sfd as CatalogEntityBase)._connString);
_datasetId = sfd.Id;
_dstSpatialRef = SpatialReferenceFactory.GetSpatialReferenceByWKT(sfd.SpatialRef, enumWKTSource.EsriPrjFile);
}
else
{
throw new NotSupportedException("类型为\"" + locationItem + "\"的位置暂不支持写。");
}
_adapter = DiffDbAdapterFactory.GetDiffDbAdapter(_dbConn);
_dbConn.Open();
}
private static ISpatialReference TryGetSpatialRefForTilFile(string fname, out double[] GTs)
{
GTs = new double[6];
string[] allLines = File.ReadAllLines(fname);
if (allLines == null || allLines.Length == 0)
{
return(null);
}
//filename = "08MAR25030758-M2AS_R1C1-052827221030_01_P001.TIF";
string atif = null;
foreach (string aLine in allLines)
{
if (aLine.Contains("filename = \"") && aLine.EndsWith(".TIF\";"))
{
atif = aLine.Replace("filename = \"", string.Empty).Replace("\";", string.Empty).Trim();
break;
}
}
if (atif == null)
{
return(null);
}
atif = Path.Combine(Path.GetDirectoryName(fname), atif);
if (!File.Exists(atif))
{
return(null);
}
using (Dataset ds = Gdal.Open(atif, Access.GA_ReadOnly))
{
ds.GetGeoTransform(GTs);
string spatialRefString = ds.GetProjectionRef();
if (string.IsNullOrWhiteSpace(spatialRefString))
{
return(null);
}
return(SpatialReferenceFactory.GetSpatialReferenceByWKT(spatialRefString, enumWKTSource.GDAL));
}
}
private void btnOk_Click(object sender, EventArgs e)
{
string path = txtInputDir.Text;
string filter = txtInputFilter.Text;
string projectionInfo = txtProjectionInfo.Text;
string outdir = txtOutputDir.Text;
string bandNames = txtDataNames.Text;
string resolutionStr = txtResolution.Text;
if (string.IsNullOrWhiteSpace(path) || !Directory.Exists(path))
{
ShowMsg("参数不正确，输入路径为空或不存在");
return;
}
if (string.IsNullOrWhiteSpace(projectionInfo))
{
return;
}
if (string.IsNullOrWhiteSpace(bandNames))//输入参数不正确，没有定义波段
{
ShowMsg("参数不正确，没有定义波段");
return;
}
if (string.IsNullOrWhiteSpace(outdir))
{
ShowMsg("参数不正确，没有定义输出路径");
return;
}
string[] files = GetFiles(path, filter);
if (files == null || files.Length == 0)
{
ShowMsg("输入路径下获取文件为空");
return;
}
double resolution;
if (!double.TryParse(resolutionStr, out resolution))
{
ShowMsg("分辨率输入错误");
return;
}
CodeToCoordDef coordCode = new CodeToCoordDef();
ISpatialReference spatialRef = SpatialReferenceFactory.GetSpatialReferenceByWKT(projectionInfo, enumWKTSource.EsriPrjFile);
try
{
if (!Directory.Exists(outdir))
{
Directory.CreateDirectory(outdir);
}
StartProgress();
for (int fi = 0; fi < files.Length; fi++)
{
string file = files[fi];
Progress((int)((fi + 1) * 100f / files.Length));
PrjEnvelope envelope = GetEnvelopeFromFilename(file, coordCode);
if (envelope == null || envelope.IsEmpty)
{
continue;
}
string[] args = new string[] { "datasets=" + bandNames };
using (IRasterDataProvider raster = RasterDataDriver.Open(file, args) as IRasterDataProvider)
{
if (raster == null)
{
continue;
}
if (raster.BandCount == 0)
{
continue;
}
using (IRasterDataProvider outRaster = CreateOutRaster(outdir, raster, spatialRef, envelope, resolution, resolution, bandNames))
{
short[] buffer = new short[raster.Width * raster.Height];
GCHandle handle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
try
{
IntPtr ptr = handle.AddrOfPinnedObject();
for (int i = 0; i < raster.BandCount; i++)
{
raster.GetRasterBand(i + 1).Read(0, 0, raster.Width, raster.Height, ptr, raster.DataType, raster.Width, raster.Height);
outRaster.GetRasterBand(i + 1).Write(0, 0, raster.Width, raster.Height, ptr, raster.DataType, raster.Width, raster.Height);
}
}
finally
{
if (handle.IsAllocated)
{
handle.Free();
}
}
}
}
}
UpdateArgs();
ShowMsg("执行结束");
}
catch (Exception ex)
{
ShowMsg(ex.Message);
}
finally
{
FinishProgress();
}
}
