/// <summary>
/// 新建一个RasterWriter
/// </summary>
/// <param name="workSpace">文件位置</param>
/// <param name="fileName">文件名称（不带有tif的后缀名）</param>
/// <param name="rasterInfo">要写的栅格的相关信息</param>
public RasterWriter(string workSpace, string fileName, RasterInformation rasterInfo)
{
_workSpace = workSpace;
_fileName = fileName;
RasterInfo = rasterInfo;
}
/// <summary>
/// 获取该栅格图像的相关数据
/// <remarks>
/// <list type="bullet">
/// <item>
/// <term>
/// 初始化_pDataset
/// </term>
/// <item>
/// 获取栅格的Height和Width
/// </item>
/// </item>
/// </list>
/// </remarks>
/// </summary>
/// <returns></returns>
private void Open()
{
//Open
IWorkspaceFactory pRFactory = new RasterWorkspaceFactoryClass();
IRasterWorkspace2 rasterWorkspace = pRFactory.OpenFromFile(_rasterWorkSapce, 0) as IRasterWorkspace2;
if (rasterWorkspace == null)
throw new ArgumentException("栅格文件无法打开");
_pDataset= rasterWorkspace.OpenRasterDataset(_rasterName);
//set height and width
IRasterProps pRasterProps = (IRasterProps)GetRaster();
RasterInfo = new RasterInformation()
{
Width = pRasterProps.Width,
Height = pRasterProps.Height,
XCellSize = pRasterProps.MeanCellSize().X,
YCellSize = pRasterProps.MeanCellSize().Y,
OriginPoint = new PointClass() { X = pRasterProps.Extent.XMin, Y = pRasterProps.Extent.YMin },
SpatialReference = ((IGeoDataset) _pDataset).SpatialReference
};
}
private void Init()
{
var firstCity = Cities.First(item => item.IsSelected);
RasterReader reader = new RasterReader(HighTrainNoFolderPath, firstCity.Name + "_高铁未通车" + ".tif");
Info = reader.RasterInfo;
RasterOp = new RasterOp(reader);
RasterOp.Reset();
}