public double Area(int[] aoi, Func <T, bool> filter)
{
if (_coordEnvelope == null)
{
return(0d);
}
IArgumentProvider argPrd = new ArgumentProvider(_dataProvider, null);
argPrd.AOI = aoi;
IRasterPixelsVisitor <T> visitor = new RasterPixelsVisitor <T>(argPrd);
double area = 0;
int row = 0;
int width = _dataProvider.Width;
double maxLat = _dataProvider.CoordEnvelope.MaxY;
double res = _dataProvider.ResolutionX;
visitor.VisitPixel(new int[] { 1 },
(idx, values) =>
{
if (filter(values[0]))
{
row = idx / width;
area += ComputePixelArea(row, maxLat, res);
}
}
);
return(area);
}
private IPixelFeatureMapper <T> MakeCompareRaster <T1, T>(string productIdentify, string fstFileName, string sedFileName, Func <T1, T1, T> function)
{
Dictionary <string, FilePrdMap> filePrdMap = new Dictionary <string, FilePrdMap>();
filePrdMap.Add("backWaterPath", new FilePrdMap(fstFileName, 1, new VaildPra(float.MinValue, float.MaxValue), new int[] { 1 }));
filePrdMap.Add("binWater", new FilePrdMap(sedFileName, 1, new VaildPra(float.MinValue, float.MaxValue), new int[] { 1 }));
ITryCreateVirtualPrd tryVPrd = new TryCreateVirtualPrdByMultiFile();
IVirtualRasterDataProvider vrd = tryVPrd.CreateVirtualRasterPRD(ref filePrdMap);
if (vrd == null)
{
throw new Exception("数据间无相交部分,无法创建虚拟数据提供者!");
}
try
{
ArgumentProvider ap = new ArgumentProvider(vrd, null);
RasterPixelsVisitor <T1> rpVisitor = new RasterPixelsVisitor <T1>(ap);
IPixelFeatureMapper <T> result = new MemPixelFeatureMapper <T>(productIdentify, 1000, new Size(vrd.Width, vrd.Height), vrd.CoordEnvelope, vrd.SpatialRef);
rpVisitor.VisitPixel(new int[] { filePrdMap["backWaterPath"].StartBand, filePrdMap["binWater"].StartBand },
(idx, values) =>
{
result.Put(idx, function(values[0], values[1]));
});
return(result);
}
finally
{
vrd.Dispose();
}
}
private void StatArea(byte[] adminRaster, byte[] landuseRaster, IRasterDataProvider dataProvider, double[,] result, Func <T, bool> filter)
{
ArgumentProvider arg = new ArgumentProvider(dataProvider, null);
int row = 0;
int width = dataProvider.Width;
float maxLat = (float)dataProvider.CoordEnvelope.MaxY;
float res = dataProvider.ResolutionY;
using (IRasterPixelsVisitor <T> v = new RasterPixelsVisitor <T>(arg))
{
v.VisitPixel(new int[] { 1 },
(idx, bandValues) =>
{
if (filter(bandValues[0]))
{
//计数
//result[adminRaster[idx], landuseRaster[idx]]++;
//精确面积
row = idx / width;
result[adminRaster[idx], landuseRaster[idx]] += RasterOperator <UInt16> .ComputePixelArea(row, maxLat, res);
}
}
);
}
}
/// <summary>
/// 统计判识结果的面积
/// </summary>
/// <param name="dataProvider">判识结果使用的栅格文件</param>
/// <param name="extractedPixels">判识结果</param>
/// <param name="aoi"></param>
/// <param name="filterDic"></param>
/// <returns></returns>
public double Area(IRasterDataProvider dataProvider, IPixelIndexMapper extractedPixels, int[] aoi)
{
if (dataProvider.CoordEnvelope == null)
{
return(0);
}
IArgumentProvider argPrd = new ArgumentProvider(dataProvider, null);
argPrd.AOI = aoi;
IRasterPixelsVisitor <T> visitor = new RasterPixelsVisitor <T>(argPrd);
int row = 0;
int width = dataProvider.Width;
double maxLat = dataProvider.CoordEnvelope.MaxY;
double res = dataProvider.ResolutionX;
double statArea = 0;
visitor.VisitPixel(new int[] { 1 },
(idx, values) =>
{
if (extractedPixels.Get(idx))
{
statArea += ComputePixelArea(row, maxLat, res);
}
});
return(statArea);
}
public int Count(int[] aoi, Func <T, int> weight)
{
IArgumentProvider argPrd = new ArgumentProvider(_dataProvider, null);
argPrd.AOI = aoi;
IRasterPixelsVisitor <T> visitor = new RasterPixelsVisitor <T>(argPrd);
int retCount = 0;
visitor.VisitPixel(new int[] { 1 },
(idx, values) =>
{
retCount += weight(values[0]);
});
return(retCount);
}
private static IArgumentProvider CreateArgumentProvider(AlgorithmDef alg, BandnameRefTable bandRefTable)
{
if (alg == null)
{
return(null);
}
IArgumentProvider prd = new ArgumentProvider(alg);
if (bandRefTable != null)
{
SetBands(prd, alg.Bands, bandRefTable);
}
SetArguments(prd, alg.Arguments);
return(prd);
}
public int Count(int[] aoi, Func <T, bool> filter)
{
IArgumentProvider argPrd = new ArgumentProvider(_dataProvider, null);
argPrd.AOI = aoi;
IRasterPixelsVisitor <T> visitor = new RasterPixelsVisitor <T>(argPrd);
int retCount = 0;
visitor.VisitPixel(new int[] { 1 },
(idx, values) =>
{
if (filter(values[0]))
{
retCount++;
}
});
return(retCount);
}
private void StatAreaUseAOI(byte[] adminRaster, byte[] landuseRaster, IRasterDataProvider dataProvider, double[,] result, int[] aoi, Func <T, int, int> weight)
{
ArgumentProvider arg = new ArgumentProvider(dataProvider, null)
{
AOI = aoi
};
using (IRasterPixelsVisitor <T> v = new RasterPixelsVisitor <T>(arg))
{
Rectangle aoiRect = AOIHelper.ComputeAOIRect(aoi, new Size(dataProvider.Width, dataProvider.Height));
v.VisitPixel(aoiRect, aoi, new int[] { 1 },
(idx, bandValues) =>
{
result[adminRaster[idx], landuseRaster[idx]] += weight(bandValues[0], idx);
}
);
}
}
public Dictionary <string, double> Area(IRasterDataProvider dataProvider, int[] aoi, Dictionary <string, Func <T, bool> > filterDic)
{
if (dataProvider.CoordEnvelope == null)
{
return(null);
}
IArgumentProvider argPrd = new ArgumentProvider(dataProvider, null);
argPrd.AOI = aoi;
IRasterPixelsVisitor <T> visitor = new RasterPixelsVisitor <T>(argPrd);
int row = 0;
int width = dataProvider.Width;
double maxLat = dataProvider.CoordEnvelope.MaxY;
double res = dataProvider.ResolutionX;
Dictionary <string, double> areas = new Dictionary <string, double>();
int length = filterDic.Count;
string[] keys = filterDic.Keys.ToArray();
Func <T, bool>[] filters = filterDic.Values.ToArray();
double[] statAreas = new double[length];
visitor.VisitPixel(new int[] { 1 },
(idx, values) =>
{
for (int i = 0; i < length; i++)
{
if (filters[i](values[0]))
{
row = idx / width;
statAreas[i] += ComputePixelArea(row, maxLat, res);
break;
}
}
}
);
for (int i = 0; i < length; i++)
{
areas.Add(keys[i], statAreas[i]);
}
return(areas);
}
public IInterestedRaster <T> CycleTimes(IRasterDataProvider[] srcRasters, RasterIdentify rasterIdentify, Func <int, T, T, T> iTimesGetter, Action <int, string> progress)
{
////修改不同区域生成结果文件大小不足问题 by chennan 20120806
//CoordEnvelope dstEnvelope = srcRasters[srcRasters.Length - 1].CoordEnvelope;
CoordEnvelope dstEnvelope = GetEnvelopeBySize(srcRasters[srcRasters.Length - 1]);
float minResolutionX = 0f;
float minResolutionY = 0f;
Size dstSize = Size.Empty;;
for (int i = 0; i < srcRasters.Length - 1; i++)
{
if (srcRasters[i].DataType != srcRasters[i + 1].DataType)
{
throw new ArgumentException("数据类型不一致无法进行频次统计！");
}
dstEnvelope = dstEnvelope.Union(GetEnvelopeBySize(srcRasters[i]));
// by chennan 20120806
minResolutionX = Math.Min(srcRasters[i].ResolutionX, srcRasters[i + 1].ResolutionX);
minResolutionY = Math.Min(srcRasters[i].ResolutionY, srcRasters[i + 1].ResolutionY);
dstSize = new Size((int)Math.Floor(dstEnvelope.Width / minResolutionX), (int)Math.Floor(dstEnvelope.Height / minResolutionY));
}
//by chennan 20121025 修改单文件无法进行周期统计
if (srcRasters.Length == 1)
{
minResolutionX = srcRasters[0].ResolutionX;
minResolutionY = srcRasters[0].ResolutionY;
dstEnvelope = srcRasters[0].CoordEnvelope.Clone();
dstSize = new Size(srcRasters[0].Width, srcRasters[0].Height);
}
IInterestedRaster <T> dstRaster = CreateDstRaster(srcRasters[0], dstEnvelope, rasterIdentify, dstSize);
IArgumentProvider argprd = new ArgumentProvider(new AlgorithmDef());
int offsetX = 0, offsetY = 0;
int dstIndex = 0;
int index = 0;
foreach (IRasterDataProvider rst in srcRasters)
{
if (progress != null)
{
progress((int)(index++ *100f / srcRasters.Length), "正在执行周期统计");
}
CoordEnvelope inc = rst.CoordEnvelope.Intersect(dstEnvelope);
if (inc == null || inc.IsEmpty())
{
continue;
}
int iCycle = Array.IndexOf <IRasterDataProvider>(srcRasters, rst) + 1;
offsetX = (int)((rst.CoordEnvelope.MinX - dstEnvelope.MinX) / rst.ResolutionX);
offsetY = (int)((dstEnvelope.MaxY - rst.CoordEnvelope.MaxY) / rst.ResolutionY);
//by chennan 20120806
IRasterDataProvider dstTempPrd = GetSubPrd <T>(dstRaster.HostDataProvider, rst, rasterIdentify, offsetX, offsetY);
try
{
IVirtualRasterDataProvider virtualDataProvider = new VirtualRasterDataProvider(new IRasterDataProvider[] { dstTempPrd, rst });
argprd.DataProvider = virtualDataProvider;
using (IRasterPixelsVisitor <T> visitor = new RasterPixelsVisitor <T>(argprd))
{
visitor.VisitPixel(new int[] { 1, 2 },
(idx, values) =>
{
dstIndex = (idx / dstTempPrd.Width + offsetY) * dstRaster.HostDataProvider.Width + (idx % dstTempPrd.Width + offsetX);
dstRaster.Put(dstIndex, iTimesGetter(iCycle, values[0], values[1]));
});
}
}
finally
{
dstTempPrd.Dispose();
if (File.Exists(dstTempPrd.fileName))
{
File.Delete(dstTempPrd.fileName);
}
}
}
for (int i = 0; i < srcRasters.Length; i++)
{
srcRasters[i].Dispose();
}
return(dstRaster);
}
public IInterestedRaster <T> Times(IRasterDataProvider[] srcRasters, RasterIdentify rasterIdentify, Action <int, string> progressTracker, Func <T, T, T> timesAction)
{
CoordEnvelope dstEnvelope = GetEnvelopeBySize(srcRasters[srcRasters.Length - 1]);
float minResolutionX = 0f;
float minResolutionY = 0f;
Size dstSize = Size.Empty;
for (int i = 0; i < srcRasters.Length - 1; i++)
{
if (srcRasters[i].DataType != srcRasters[i + 1].DataType)
{
throw new ArgumentException("数据类型不一致无法进行频次统计！");
}
dstEnvelope = dstEnvelope.Union(GetEnvelopeBySize(srcRasters[i]));
minResolutionX = Math.Min(srcRasters[i].ResolutionX, srcRasters[i + 1].ResolutionX);
minResolutionY = Math.Min(srcRasters[i].ResolutionY, srcRasters[i + 1].ResolutionY);
dstSize = new Size((int)Math.Round(dstEnvelope.Width / minResolutionX), (int)Math.Round(dstEnvelope.Height / minResolutionY));
}
if (srcRasters.Length == 1)
{
minResolutionX = srcRasters[0].ResolutionX;
minResolutionY = srcRasters[0].ResolutionY;
dstEnvelope = srcRasters[0].CoordEnvelope.Clone();
dstSize = new Size(srcRasters[0].Width, srcRasters[0].Height);
}
IInterestedRaster <T> dstRaster = CreateDstRaster(srcRasters[0], dstEnvelope, rasterIdentify, dstSize);
IArgumentProvider argprd = new ArgumentProvider(new AlgorithmDef());
int offsetX = 0, offsetY = 0;
int dstIndex = 0;
if (progressTracker != null)
{
progressTracker(0, "开始进行统计...");
}
int num = 0;
foreach (IRasterDataProvider rst in srcRasters)
{
offsetX = (int)((rst.CoordEnvelope.MinX - dstEnvelope.MinX) / rst.ResolutionX);
offsetY = (int)((dstEnvelope.MaxY - rst.CoordEnvelope.MaxY) / rst.ResolutionY);
//by chennan 20120806
IRasterDataProvider dstTempPrd = GetSubPrd <T>(dstRaster.HostDataProvider, rst, rasterIdentify, offsetX, offsetY);
try
{
IVirtualRasterDataProvider virtualDataProvider = new VirtualRasterDataProvider(new IRasterDataProvider[] { dstTempPrd, rst });
argprd.DataProvider = virtualDataProvider;
using (IRasterPixelsVisitor <T> visitor = new RasterPixelsVisitor <T>(argprd))
{
visitor.VisitPixel(new int[] { 1, 2 },
(idx, values) =>
{
dstIndex = (idx / dstTempPrd.Width + offsetY) * dstRaster.HostDataProvider.Width + (idx % dstTempPrd.Width + offsetX);
dstRaster.Put(dstIndex, timesAction(values[0], values[1]));
});
}
num++;
int persent = (int)(num * 100f / srcRasters.Length);
if (progressTracker != null)
{
progressTracker(persent, "统计完成" + persent + "%");
}
}
finally
{
dstTempPrd.Dispose();
if (File.Exists(dstTempPrd.fileName))
{
File.Delete(dstTempPrd.fileName);
}
}
if (progressTracker != null)
{
progressTracker(100, "统计完成");
}
}
for (int i = 0; i < srcRasters.Length; i++)
{
srcRasters[i].Dispose();
}
return(dstRaster);
}
