public IRasterDataProvider CreateOutRaster(string outFileName, RasterMaper[] inrasterMaper)
{
IRasterDataDriver raster = RasterDataDriver.GetDriverByName("MEM") as IRasterDataDriver;
GeoDo.RSS.Core.DF.CoordEnvelope outEnv = null;
foreach (RasterMaper inRaster in inrasterMaper)
{
if (outEnv == null)
{
outEnv = inRaster.Raster.CoordEnvelope;
}
else
{
outEnv.Union(inRaster.Raster.CoordEnvelope);
}
}
float resX = inrasterMaper[0].Raster.ResolutionX;
float resY = inrasterMaper[0].Raster.ResolutionY;
int width = (int)(Math.Round(outEnv.Width / resX));
int height = (int)(Math.Round(outEnv.Height / resY));
string mapInfo = outEnv.ToMapInfoString(new Size(width, height));
RasterDataProvider outRaster = raster.Create(outFileName, width, height, 1, enumDataType.Int16, mapInfo) as RasterDataProvider;
return(outRaster);
}
//创建输出删格文件
protected IRasterDataProvider CreateOutRaster(string outFileName, enumDataType dataType, RasterMaper[] inrasterMaper, float resolution)
{
IRasterDataDriver raster = RasterDataDriver.GetDriverByName("MEM") as IRasterDataDriver;
GeoDo.RSS.Core.DF.CoordEnvelope outEnv = null;
foreach (RasterMaper inRaster in inrasterMaper)
{
if (outEnv == null)
{
outEnv = inRaster.Raster.CoordEnvelope;
}
else
{
outEnv = outEnv.Intersect(inRaster.Raster.CoordEnvelope);
}
}
float resX, resY;
if (resolution != 0f)
{
resX = resolution;
resY = resolution;
}
else
{
resX = inrasterMaper[0].Raster.ResolutionX;
resY = inrasterMaper[0].Raster.ResolutionY;
}
int width = (int)(Math.Round(outEnv.Width / resX));
int height = (int)(Math.Round(outEnv.Height / resY));
string mapInfo = outEnv.ToMapInfoString(new Size(width, height));
if (File.Exists(outFileName))
{
File.Delete(outFileName);
}
RasterDataProvider outRaster = raster.Create(outFileName, width, height, 1, dataType, mapInfo) as RasterDataProvider;
return(outRaster);
}
private string GetMapInfoString(CoordEnvelope coordEnvelope, int width, int height)
{
return(coordEnvelope != null?coordEnvelope.ToMapInfoString(new Size(width, height)) : string.Empty);
}
