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);
}