public override void EndSession()
{
base.EndSession();
_xs = null;
_ys = null;
_refSB_Cal_Coefficients = null;
_prelaunch_Nonlinear_Coefficients = null;
_emissive_Radiance_Scales = null;
_emissive_Radiance_Offsets = null;
if (_outLdfDriver != null)
{
_outLdfDriver.Dispose();
_outLdfDriver = null;
}
_geoDataProvider = null;
}
public override void EndSession()
{
base.EndSession();
_xs = null;
_ys = null;
_refSB_Coeff = null;
_emissive_Radiance_Coeff = null;
_emmisive_BT_Coefficients = null;
if (_solarZenithCacheRaster != null)
{
_solarZenithCacheRaster.Dispose();
_solarZenithCacheRaster = null;
}
if (_outLdfDriver != null)
{
_outLdfDriver.Dispose();
_outLdfDriver = null;
}
}
public override void EndSession()
{
base.EndSession();
_xs = null;
_ys = null;
_vir_Cal_Coeff = null;
if (_solarZenithCacheRaster != null)
{
_solarZenithCacheRaster.Dispose();
_solarZenithCacheRaster = null;
}
if (_outLdfDriver != null)
{
_outLdfDriver.Dispose();
_outLdfDriver = null;
}
if (_longitudeBand != null)
{
_longitudeBand.Dispose();
_longitudeBand = null;
}
if (_latitudeBand != null)
{
_latitudeBand.Dispose();
_latitudeBand = null;
}
if (_latitudeRaster != null)
{
_latitudeRaster.Dispose();
_latitudeRaster = null;
}
if (_longitudeRaster != null)
{
_longitudeRaster.Dispose();
_longitudeRaster = null;
}
}
private string ExtractFile(string filename, int bandIndex, PrjEnvelope env, string regionNam, string outdir)
{
string projectionType = null;
string dstFileName = null;
IRasterDataProvider prd = GeoDataDriver.Open(filename) as IRasterDataProvider;
double dminx = env.MinX, dmax = env.MaxX, dminy = env.MinY, dmaxy = env.MaxY;
int xoffset = (int)(Math.Round((dminx - prd.CoordEnvelope.MinX) / prd.ResolutionX));
int yoffset = (int)(Math.Round((prd.CoordEnvelope.MaxY - dmaxy) / prd.ResolutionY));
if (xoffset < 0)
{
xoffset = 0;
}
if (yoffset < 0)
{
yoffset = 0;
}
//int yoffset = (int)(Math.Round(dminy - prd.CoordEnvelope.MinY) / prd.ResolutionY);
int width = (int)(Math.Round((env.MaxX - env.MinX) / prd.ResolutionX));
int height = (int)(Math.Round((env.MaxY - env.MinY) / prd.ResolutionY));
if (xoffset < 0 || yoffset < 0 || width <= 0 || height <= 0)
{
MessageBox.Show("文件：" + filename + "小于指定的提取范围");
return(null);
}
float tResolutionX;
float tResolutionY;
tResolutionX = Convert.ToSingle(prd.ResolutionX);
tResolutionY = Convert.ToSingle(prd.ResolutionY);
string[] optionString = new string[] {
"INTERLEAVE=BSQ",
"VERSION=LDF",
"WITHHDR=TRUE",
"SPATIALREF=" + projectionType,
"MAPINFO={" + 1 + "," + 1 + "}:{" + dminx + "," + dmaxy + "}:{" + tResolutionX + "," + tResolutionY + "}"
};
enumDataType dataType = prd.DataType;
if (!Directory.Exists(outdir))
{
Directory.CreateDirectory(outdir);
}
dstFileName = Path.Combine(outdir, Path.GetFileName(filename).Replace("China", regionNam));// +"\\" + Path.GetFileNameWithoutExtension(filename) + "_" + regionNam + ".dat";
if (File.Exists(dstFileName))
{
return(dstFileName);
}
IRasterDataDriver dataDriver = GeoDataDriver.GetDriverByName("MEM") as IRasterDataDriver;
IRasterDataProvider dstRaster = dataDriver.Create(dstFileName, width, height, 1, dataType, optionString);
float[] buffer = new float[width * height];
unsafe
{
fixed(float *ptr = buffer)
{
IntPtr bufferPtr = new IntPtr(ptr);
prd.GetRasterBand(bandIndex + 1).Read(xoffset, yoffset, width, height, bufferPtr, dataType, width, height);
fixed(float *wptr = buffer)
{
IntPtr newBuffer = new IntPtr(wptr);
dstRaster.GetRasterBand(1).Write(0, 0, width, height, newBuffer, dataType, width, height);
}
}
}
if (prd != null)
{
prd.Dispose();
}
if (dstRaster != null)
{
dstRaster.Dispose();
}
dataDriver.Dispose();
return(dstFileName);
}