/// <summary>
/// 标准差
/// </summary>
/// <param name="dzxLayer"></param>
/// <param name="aue"></param>
/// <param name="bzc"></param>
public static void getBZC(OSGeo.OGR.Layer dzxLayer, out double aue, out double bzc)
{
//获取Featuer数
int featCount = dzxLayer.GetFeatureCount(0);
// 1 拿到每个Featuer的Value
double[] values = new double[featCount];
for (int i = 0; i < featCount; i++)
{
OSGeo.OGR.Feature fileFeat = dzxLayer.GetFeature(i);
values[i] = fileFeat.GetFieldAsDouble("EVE");
fileFeat.Dispose();
}
// 2 求Values的平均值
aue = values.Average();
// 3 求values与平均值差的平方和
double pingFangHe = 0;
for (int i = 0; i < featCount; i++)
{
pingFangHe += (values[i] - aue) * (values[i] - aue);
}
// 4 每个值与平均值的差相加,除Featuer数.再开方,得到标准差
bzc = Math.Sqrt(pingFangHe / featCount);
}
/// <summary>
/// Ogr to DotSpatial at layer level
/// </summary>
/// <param name="layer">Ogr Layer</param>
/// <returns>DotSpatial IFeatureSet</returns>
public static DotSpatial.Data.IFeatureSet Ogr2DSLayer(OSGeo.OGR.Layer layer)
{
DotSpatial.Data.IFeatureSet featureSet = new DotSpatial.Data.FeatureSet();
featureSet.FeatureType = Ogr2DSGeometryType(layer.GetGeomType());
featureSet.DataTable = Ogr2DSDataTable(layer.GetLayerDefn());
featureSet.Projection = Ogr2DSProjection(layer.GetSpatialRef());
for (int i = 0; i < layer.GetFeatureCount(0); i++)
{
OSGeo.OGR.Geometry geometry = layer.GetFeature(i).GetGeometryRef();
DotSpatial.Data.IFeature feature = new DotSpatial.Data.Feature(Ogr2DSGeometry(geometry));
OSGeo.OGR.Feature ogrFeature = layer.GetFeature(i);
feature.DataRow = featureSet.DataTable.NewRow();
for (int j = 0; j < layer.GetLayerDefn().GetFieldCount(); j++)
{
object value = GetOgrValue(ogrFeature, j);
if (value == null)
{
value = DBNull.Value;
}
feature.DataRow[j] = value;
}
featureSet.Features.Add(feature);
}
return(featureSet);
}
/// <summary>
/// 获取Feature的最大值和最小值 范围不准
/// </summary>
/// <param name="dsmDs"></param>
/// <param name="oriFeat"></param>
/// <param name="bufFeat"></param>
/// <param name="subRasterOff_Size"></param>
private static void getMaxMinValue(OSGeo.GDAL.Dataset dsmDs, OSGeo.OGR.Feature oriFeat, OSGeo.OGR.Feature bufFeat, int[] subRasterOff_Size)
{
//拿到当前Feature对应的栅格值（数组）
double[] rastValue = new double[subRasterOff_Size[2] * subRasterOff_Size[3]];
//把SUBimg的值读进数组
lock (dsmDs)
{
dsmDs.GetRasterBand(1).ReadRaster(
subRasterOff_Size[0],
subRasterOff_Size[1],
subRasterOff_Size[2],
subRasterOff_Size[3],
rastValue,
subRasterOff_Size[2],
subRasterOff_Size[3],
0, 0);
}
double max = rastValue.Max();
double min = rastValue.Min();
double cay = max - min;
oriFeat.SetField("TEMP", max - min);
oriFeat.SetField("MIN", 0);
oriFeat.SetField("MAX", min);
oriFeat.SetField("HIGHT", max);
}
static void getMinOutLineFromLayerToLayer(OSGeo.OGR.Layer inLayer)
{
shpDataSet.deleteLayerByName("minOutLine");
OSGeo.OGR.Layer minoutline = shpDataSet.CreateLayer("minOutLine", inLayer.GetSpatialRef(), inLayer.GetGeomType(), null);
OSGeo.OGR.Feature aFeat = null;
StaticTools.msgLine("getMinOutline...");
int featCount = inLayer.GetFeatureCount(0);
for (int i = 0; i < featCount; i++)
{
aFeat = inLayer.GetFeature(i);
OSGeo.OGR.Geometry oGeometry = aFeat.GetGeometryRef();
OSGeo.OGR.Geometry ogeo = oGeometry.GetGeometryRef(0);
QTGeometry qtGeo = new QTGeometry(ogeo);
minoutline.CreateFeature(qtGeo.GetSMBR());
StaticTools.progress((i + 1) * 100 / featCount, $"{i} / {featCount}");
}
minoutline.Dispose();
//inLayer.ResetReading();
//while ((aFeat = inLayer.GetNextFeature()) != null)
//{
// OSGeo.OGR.Geometry oGeometry = aFeat.GetGeometryRef();
// OSGeo.OGR.Geometry ogeo = oGeometry.GetGeometryRef(0);
// QTGeometry qtGeo = new QTGeometry(ogeo);
// minoutline.CreateFeature(qtGeo.GetSMBR());
//}
}
/// <summary>
/// 将OSGeo.OGR.Feature转为Polygon
/// </summary>
/// <param name="feature">OSGeo.OGR.Feature对象</param>
/// <returns>Polygon对象</returns>
private List <Polygon> ConvertFeature2Polygon(OSGeo.OGR.Feature feature)
{
List <Polygon> polys = new List <Polygon>();
if (feature != null)
{
ConvertFromFeature convert = new ConvertFromFeature();
GeneralGeometry geo = convert.Feature2Geometry(feature);
switch (geo.GeometryType)
{
case WKBGeometryType.wkbPolygon:
Polygon poly = geo.MyPolygon;
poly.Id = _id++;
polys.Add(poly);
break;
case WKBGeometryType.wkbMultiPolygon:
polys = geo.MyMultiPolygon;
for (int i = 0; i < polys.Count; i++)
{
polys[i].Id = _id++;
}
break;
default:
break;
}
}
return(polys);
}
/// <summary>
/// 通过ID数组提取出所有要素
/// </summary>
/// <param name="dzLine"></param>
/// <param name="pdLing"></param>
/// <param name="savePath"></param>
public static void selectFeat(string dzLine, string pdLing, string savePath)
{
//获得数组
int[] a = getMinIdGroup(dzLine, pdLing);
OSGeo.OGR.Ogr.RegisterAll();
OSGeo.OGR.Driver dr = OSGeo.OGR.Ogr.GetDriverByName("ESRI shapefile");
//读取原Layer
OSGeo.OGR.DataSource dzDS = dr.Open(dzLine, 0);
OSGeo.OGR.Layer dzLayer = dzDS.GetLayerByIndex(0);
//新建Layer
if (System.IO.File.Exists(savePath))
{
System.IO.File.Delete(savePath);
}
OSGeo.OGR.DataSource ds = dr.CreateDataSource(savePath, null);
OSGeo.OGR.Layer fileLayer = ds.CreateLayer("", null, OSGeo.OGR.wkbGeometryType.wkbPolygon, null);
//get featuer by ID
for (int i = 0; i < a.Length; i++)
{
OSGeo.OGR.Feature dzFeat = dzLayer.GetFeature(a[i]);
OSGeo.OGR.Geometry dzGeom = dzFeat.GetGeometryRef();
OSGeo.OGR.Geometry fileGeom = dzGeom;
OSGeo.OGR.Feature fileFeat = new OSGeo.OGR.Feature(dzFeat.GetDefnRef());
fileFeat.SetGeometry(fileGeom);
fileLayer.CreateFeature(dzFeat);
}
fileLayer.Dispose();
ds.Dispose();
dzDS.Dispose();
}
/*************************************************************************************************/
/***************************读入SHP文件***************************/
/// <summary>
/// shpPolygon To List<Point[]>
/// </summary>
/// <param name="filePath"></param>
/// <returns></returns>
public static List <Point[]> shpPolygonToPointGL(string filePath)
{
List <Point[]> allFeature = new List <Point[]>();
OSGeo.OGR.Ogr.RegisterAll();
OSGeo.OGR.Driver dr = OSGeo.OGR.Ogr.GetDriverByName("ESRI shapefile");
OSGeo.OGR.DataSource ds = dr.Open(filePath, 0);
OSGeo.OGR.Layer fileLayer = ds.GetLayerByIndex(0);
int FeatCount = fileLayer.GetFeatureCount(0);
for (int u = 0; u < FeatCount; u++)
{
OSGeo.OGR.Feature fileFeature = fileLayer.GetFeature(u);
OSGeo.OGR.Geometry fileGeom = fileFeature.GetGeometryRef();
OSGeo.OGR.Geometry subGeom = fileGeom.GetGeometryRef(0);
int k = subGeom.GetPointCount();
Point[] aFeat = new Point[k];
for (int i = 0; i < k; i++)
{
aFeat[i].X = subGeom.GetX(i);
aFeat[i].Y = subGeom.GetY(i);
aFeat[i].Z = subGeom.GetZ(i);
}
allFeature.Add(aFeat);
}
return(allFeature);
}
public static object GetFieldValue(this OSGeo.OGR.Feature feature, string fieldName)
{
if (feature == null || string.IsNullOrEmpty(fieldName))
{
throw new Exception("参数设置错误");
}
using var fieldDefn = feature.GetFieldDefnRef(fieldName);
object value;
switch (fieldDefn.GetFieldType())
{
case OSGeo.OGR.FieldType.OFTString:
value = feature.GetFieldAsString(fieldName);
break;
case OSGeo.OGR.FieldType.OFTInteger:
value = feature.GetFieldAsInteger(fieldName);
break;
case OSGeo.OGR.FieldType.OFTInteger64:
value = feature.GetFieldAsInteger64(fieldName);
break;
case OSGeo.OGR.FieldType.OFTReal:
value = feature.GetFieldAsDouble(fieldName);
break;
default:
throw new NotImplementedException();
}
return(value);
}
public static object GetFieldValue(this OSGeo.OGR.Feature feature, int index)
{
if (feature == null || index < 0 || index >= feature.GetFieldCount())
{
throw new Exception("参数设置错误");
}
using var fieldDefn = feature.GetFieldDefnRef(index);
object value;
switch (fieldDefn.GetFieldType())
{
case OSGeo.OGR.FieldType.OFTString:
value = feature.GetFieldAsString(index);
break;
case OSGeo.OGR.FieldType.OFTInteger:
value = feature.GetFieldAsInteger(index);
break;
case OSGeo.OGR.FieldType.OFTInteger64:
value = feature.GetFieldAsInteger64(index);
break;
case OSGeo.OGR.FieldType.OFTReal:
value = feature.GetFieldAsDouble(index);
break;
default:
throw new NotImplementedException();
}
return(value);
}
private static void _标准差(string dzx, out double aue, out double bzc)
{
OSGeo.OGR.Ogr.RegisterAll();
OSGeo.OGR.Driver dr = OSGeo.OGR.Ogr.GetDriverByName("ESRI shapefile");
OSGeo.OGR.DataSource dzxDS = dr.Open(dzx, 0);
OSGeo.OGR.Layer dzxLayer = dzxDS.GetLayerByIndex(0);
//获取Featuer数
int featCount = dzxLayer.GetFeatureCount(0);
// 1 拿到每个Featuer的Value
double[] values = new double[featCount];
for (int i = 0; i < featCount; i++)
{
OSGeo.OGR.Feature fileFeat = dzxLayer.GetFeature(i);
OSGeo.OGR.Geometry fileGeom = fileFeat.GetGeometryRef();
values[i] = fileFeat.GetFieldAsDouble("EVE");
fileGeom.Dispose();
fileFeat.Dispose();
}
dzxDS.Dispose();
// 2 求Values的平均值
aue = values.Average();
// 3 求values与平均值差的平方和
double pingFangHe = 0;
for (int i = 0; i < featCount; i++)
{
pingFangHe += (values[i] - aue) * (values[i] - aue);
}
// 4 每个值与平均值的差相加,除Featuer数.再开方,得到标准差
bzc = Math.Sqrt(pingFangHe / featCount);
}
//分块清理，提高效率
public static OSGeo.OGR.Layer cleanLayer_Cut(OSGeo.OGR.Layer pdLayer, double minArea, double maxArea, double maxCha = 1)
{
List <CutBox> Tree = buildTree(pdLayer);
shpDataSet.deleteLayerByName("pdClear");
OSGeo.OGR.Layer outLayer = shpDataSet.CreateLayer("pdClear", pdLayer.GetSpatialRef(), pdLayer.GetGeomType(), null);
OSGeo.OGR.Envelope oriEnve = new OSGeo.OGR.Envelope();
OSGeo.OGR.Envelope nextEnve = new OSGeo.OGR.Envelope();
StaticTools.msgLine("clean SlopeLine...");
for (int c = 0; c < Tree.Count; c++)
{
CutBox cb = Tree[c];
int featCount = cb.pdxIDs.Count;
for (int i = 0; i < featCount - 1; i++)
{
bool isOnly = true;
OSGeo.OGR.Feature ori = pdLayer.GetFeature(cb.pdxIDs[i]);
double oriArea = ori.GetGeometryRef().GetArea();
if (oriArea < minArea || oriArea > maxArea)
{
//判断当前要素的面积，过小或过大时，认为其有相同的图形，不加入新的Layer
isOnly = false;
}
else
{
//判断当前要素与其它要素的包围盒的对应边，差值都小于阈值时，认为是相同的图形，需要跳过
//没有相同的图型时，isOnly为true ，塞到新的layer里
ori.GetGeometryRef().GetEnvelope(oriEnve);
for (int j = i + 1; j < featCount; j++)
{
pdLayer.GetFeature(cb.pdxIDs[j]).GetGeometryRef().GetEnvelope(nextEnve);
if (Math.Abs(oriEnve.MaxX - nextEnve.MaxX) < maxCha &&
Math.Abs(oriEnve.MaxY - nextEnve.MaxY) < maxCha &&
Math.Abs(oriEnve.MinX - nextEnve.MinX) < maxCha &&
Math.Abs(oriEnve.MinY - nextEnve.MinY) < maxCha)
{
isOnly = false;
break;
}
}
}
if (isOnly)
{
outLayer.CreateFeature(ori);
}
StaticTools.progress((i + 2) * 100 / featCount, $"{i + 1} / {featCount}");
}
}
if (IsDelete)
{
shpDataSet.deleteLayerByName(pdLayer.GetName());
}
return(outLayer);
}
public static OSGeo.OGR.Feature ToFeature(this IFeature feature)
{
OSGeo.OGR.Feature destFeature = null;
if (feature is GdalFeature gdalFeature)
{
destFeature = gdalFeature.Feature;
}
return(destFeature);
}
public static IFeature ToFeature(this OSGeo.OGR.Feature feature)
{
IFeature destFeature = null;
if (feature != null)
{
destFeature = new GdalFeature(feature);
}
return(destFeature);
}
/// <summary>
/// Returns a FeatureDataRow based on a RowID
/// </summary>
/// <param name="rowId"></param>
/// <returns>FeatureDataRow</returns>
public FeatureDataRow GetFeature(uint rowId)
{
FeatureDataTable fdt = new FeatureDataTable();
_ogrLayer.ResetReading();
ReadColumnDefinition(fdt, _ogrLayer);
OgrFeature feature = _ogrLayer.GetFeature((int)rowId);
return(OgrFeatureToFeatureDataRow(fdt, feature));
}
private static void getH(OSGeo.OGR.Layer oriLayer)
{
//创建一个BUFFER，BUFFER距离为1米
OSGeo.OGR.Layer bufLayer = bufferFile(oriLayer, 1);
//判断原文件中是否有以下字段，没有就创建
if (oriLayer.FindFieldIndex("MIN", 1) == -1)
{
OSGeo.OGR.FieldDefn min = new OSGeo.OGR.FieldDefn("MIN", OSGeo.OGR.FieldType.OFTReal);
oriLayer.CreateField(min, 1);
}
if (oriLayer.FindFieldIndex("MAX", 1) == -1)
{
OSGeo.OGR.FieldDefn max = new OSGeo.OGR.FieldDefn("MAX", OSGeo.OGR.FieldType.OFTReal);
oriLayer.CreateField(max, 1);
}
if (oriLayer.FindFieldIndex("HIGHT", 1) == -1)
{
OSGeo.OGR.FieldDefn hight = new OSGeo.OGR.FieldDefn("HIGHT", OSGeo.OGR.FieldType.OFTReal);
oriLayer.CreateField(hight, 1);
}
if (oriLayer.FindFieldIndex("TEMP", 1) == -1)
{
OSGeo.OGR.FieldDefn hight = new OSGeo.OGR.FieldDefn("TEMP", OSGeo.OGR.FieldType.OFTReal);
oriLayer.CreateField(hight, 1);
}
double[] transfrom = new double[6];
dsmDataset.GetGeoTransform(transfrom);
int allX = dsmDataset.RasterXSize;
int allY = dsmDataset.RasterYSize;
StaticTools.msgLine("getH...");
//开始计算每个Feature需要读取的栅格参数
int featCount = oriLayer.GetFeatureCount(0);
for (int i = 0; i < featCount; i++)
{
OSGeo.OGR.Feature oriFeat = oriLayer.GetFeature(i);
OSGeo.OGR.Feature bufFeat = bufLayer.GetFeature(i);
int[] subRasterOff_Size = subRasterInfo(transfrom, allX, allY, bufFeat);
// getMaxMinValue(dsmDataset, oriFeat, bufFeat, subRasterOff_Size);
oriLayer.SetFeature(oriFeat);
oriFeat.Dispose();
bufFeat.Dispose();
StaticTools.progress((i + 1) * 100 / featCount, $"{i} / {featCount}");
}
if (IsDelete)
{
shpDataSet.deleteLayerByName(bufLayer.GetName());
}
}
static OSGeo.OGR.Feature polyFeat(OSGeo.OGR.Geometry lineGeom)
{
OSGeo.OGR.Feature polyFeat = new OSGeo.OGR.Feature(new OSGeo.OGR.FeatureDefn(""));
OSGeo.OGR.Geometry polyGeom = new OSGeo.OGR.Geometry(OSGeo.OGR.wkbGeometryType.wkbPolygon);
OSGeo.OGR.Geometry subGeom = new OSGeo.OGR.Geometry(OSGeo.OGR.wkbGeometryType.wkbLinearRing);
for (int s = 0; s < lineGeom.GetPointCount(); s++)
{
subGeom.AddPoint(lineGeom.GetX(s), lineGeom.GetY(s), lineGeom.GetZ(s));
}
polyGeom.AddGeometry(subGeom);
polyFeat.SetGeometry(polyGeom);
return(polyFeat);
}
private static void TKDataF(OSGeo.OGR.Layer slopePolyLayer, int index)
{
double[] geoTansform = new double[6];
dsmDataset.GetGeoTransform(geoTansform);
int xTimes = (dsm_Xsize - 300) / 500;
int xRemainder = (dsm_Xsize - 300) % 500;
int yTimes = (dsm_Ysize - 300) / 500;
int yRemainder = (dsm_Ysize - 300) % 500;
int ax = xTimes, by = yTimes;
if (xRemainder > 10)
{
ax++;
}
int x = index % ax;
int y = index / ax;
int xsize = 800, ysize = 800;
if (x * 500 + 800 > dsm_Xsize)
{
xsize = dsm_Xsize - x * 500;
}
if (y * 500 + 800 > dsm_Ysize)
{
ysize = dsm_Ysize - y * 500;
}
double[] buffer = new double[xsize * ysize];
double[] slopebuffer = new double[xsize * ysize];
dsmDataset.GetRasterBand(1).ReadRaster(x * 500, y * 500, xsize, ysize, buffer, xsize, ysize, 0, 0);
slopeDataSet.GetRasterBand(1).ReadRaster(x * 500, y * 500, xsize, ysize, slopebuffer, xsize, ysize, 0, 0);
BasicUnit bUnit = new BasicUnit(x * 500, y * 500, xsize, ysize, ImprotLevel, buffer, slopebuffer, geoTansform, imgNodata);
List <OSGeo.OGR.Geometry> geolist = bUnit.Identify2();
lock (slopePolyLayer)
{
foreach (OSGeo.OGR.Geometry item in geolist)
{
if (item.GetGeometryType() == OSGeo.OGR.wkbGeometryType.wkbPolygon25D ||
item.GetGeometryType() == OSGeo.OGR.wkbGeometryType.wkbPolygon)
{
OSGeo.OGR.Feature oFea = new OSGeo.OGR.Feature(slopePolyLayer.GetLayerDefn());
oFea.SetGeometry(item);
slopePolyLayer.CreateFeature(oFea);
}
}
}
}
/// <summary>
/// 根据dsm的坐标划分区域
/// </summary>
/// <param name="tileSize">区块尺寸</param>
/// <returns></returns>
static OSGeo.OGR.Layer createCutLayer(double tileSize)
{
shpDataSet.deleteLayerByName("cutLayer");
OSGeo.OGR.Layer cutLayer = shpDataSet.CreateLayer("cutLayer", srs, OSGeo.OGR.wkbGeometryType.wkbPolygon, null);
double[] trans = new double[6];
dsmDataset.GetGeoTransform(trans);
//四边坐标
double top = trans[3];
double left = trans[0];
double right = trans[0] + dsmDataset.RasterXSize * trans[1];
double bottom = trans[3] + dsmDataset.RasterYSize * trans[5];
//子块角点
Point LB, LT, RT, RB;
//横竖块数
int hCount = (int)((top - bottom) / tileSize) + 1;
int wCount = (int)((right - left) / tileSize) + 1;
for (int h = 0; h < hCount; h++)
{
for (int w = 0; w < wCount; w++)
{
OSGeo.OGR.Geometry subCutGeom = new OSGeo.OGR.Geometry(OSGeo.OGR.wkbGeometryType.wkbLinearRing);
LB.X = left + tileSize * w;
LB.Y = bottom + tileSize * h;
subCutGeom.AddPoint(LB.X, LB.Y, 0);
LT.X = LB.X;
LT.Y = LB.Y + tileSize;
subCutGeom.AddPoint(LT.X, LT.Y, 0);
RT.X = LB.X + tileSize;
RT.Y = LT.Y;
subCutGeom.AddPoint(RT.X, RT.Y, 0);
RB.X = RT.X;
RB.Y = LB.Y;
subCutGeom.AddPoint(RB.X, RB.Y, 0);
//封闭poly
subCutGeom.AddPoint(LB.X, LB.Y, 0);
OSGeo.OGR.Geometry cutGeom = new OSGeo.OGR.Geometry(OSGeo.OGR.wkbGeometryType.wkbPolygon);
cutGeom.AddGeometry(subCutGeom);
OSGeo.OGR.Feature cutFeat = new OSGeo.OGR.Feature(new OSGeo.OGR.FeatureDefn(""));
cutFeat.SetGeometry(cutGeom);
cutLayer.CreateFeature(cutFeat);
}
}
return(cutLayer);
}
/******************************** 等值线转换为多边形 ***********************************************/
/// <summary>
/// 等值线转为POLYGON
/// </summary>
/// <param name="filePath"></param>
/// <returns></returns>
public static string dzPoly(string filePath)
{
OSGeo.OGR.Ogr.RegisterAll();
OSGeo.OGR.Driver dr = OSGeo.OGR.Ogr.GetDriverByName("ESRI shapefile");
string a = StaticTools.tempFilePath("shp", "等值线POLY");
OSGeo.OGR.DataSource newDS = dr.CreateDataSource(a, null);
OSGeo.OGR.Layer polyLayer = newDS.CreateLayer("", null, OSGeo.OGR.wkbGeometryType.wkbPolygon, null);
OSGeo.OGR.FieldDefn fieldDf0 = new OSGeo.OGR.FieldDefn("LID", OSGeo.OGR.FieldType.OFTInteger);
OSGeo.OGR.FieldDefn fieldDf1 = new OSGeo.OGR.FieldDefn("EVE", OSGeo.OGR.FieldType.OFTReal);
polyLayer.CreateField(fieldDf0, 1); //ID
polyLayer.CreateField(fieldDf1, 1); //Value
OSGeo.OGR.FeatureDefn featDF = new OSGeo.OGR.FeatureDefn("");
Console.WriteLine("开始等值线转POLY！");
OSGeo.OGR.DataSource cleanDS = dr.Open(filePath, 0);
OSGeo.OGR.Layer cleanLayer = cleanDS.GetLayerByIndex(0);
for (int i = 0; i < cleanLayer.GetFeatureCount(0); i++)
{
OSGeo.OGR.Feature lineFeat = cleanLayer.GetFeature(i);
OSGeo.OGR.Geometry lineGeom = lineFeat.GetGeometryRef();
OSGeo.OGR.Feature polyFeat = new OSGeo.OGR.Feature(featDF);
OSGeo.OGR.Geometry polyGeom = new OSGeo.OGR.Geometry(OSGeo.OGR.wkbGeometryType.wkbPolygon);
OSGeo.OGR.Geometry subGeom = new OSGeo.OGR.Geometry(OSGeo.OGR.wkbGeometryType.wkbLinearRing);
int u = lineGeom.GetPointCount();
for (int s = 0; s < u; s++)
{
double x = lineGeom.GetX(s);
double y = lineGeom.GetY(s);
double z = lineGeom.GetZ(s);
subGeom.AddPoint(x, y, z);
}
polyGeom.AddGeometry(subGeom);
polyFeat.SetGeometry(polyGeom);
polyLayer.CreateFeature(polyFeat);
lineGeom.Dispose();
polyGeom.Dispose();
subGeom.Dispose();
lineFeat.Dispose();
polyFeat.Dispose();
}
cleanLayer.Dispose();
polyLayer.Dispose();
cleanDS.Dispose();
newDS.Dispose();
Console.WriteLine("等值线转POLY完成！");
return(a);
}
/// <summary>
/// DotSpatial to Ogr at layer level
/// </summary>
/// <param name="featureSet">DotSpatial IFeatureSet</param>
/// <returns>Ogr Layer</returns>
public static OSGeo.OGR.Layer DS2OrgLayer(DotSpatial.Data.IFeatureSet featureSet)
{
using (OSGeo.OGR.Driver driver = OSGeo.OGR.Ogr.GetDriverByName("Memory"))
{
OSGeo.OGR.DataSource dataSource = driver.CreateDataSource(featureSet.Name, null);
OSGeo.OGR.Layer layer = dataSource.CreateLayer("Result", DS2OgrProjection(featureSet.Projection), DS2OgrGeometryType(featureSet.FeatureType), new string[] { });
OSGeo.OGR.FeatureDefn featureDefn = DS2OgrDataTable(featureSet.DataTable);
for (int k = 0; k < featureDefn.GetFieldCount(); k++)
{
layer.CreateField(featureDefn.GetFieldDefn(k), 0);
}
for (int i = 0; i < featureSet.NumRows(); i++)
{
DotSpatial.Data.IFeature feature = featureSet.GetFeature(i);
OSGeo.OGR.Feature ogrFeature = new OSGeo.OGR.Feature(featureDefn);
ogrFeature.SetGeometry(DS2OgrGeometry(feature.Geometry, featureSet));
for (int j = 0; j < feature.DataRow.ItemArray.Length; j++)
{
#region Set Value to Feature
object value = feature.DataRow.ItemArray.GetValue(j);
if (value is int)
{
ogrFeature.SetField(j, (int)value);
}
else if (value is double)
{
ogrFeature.SetField(j, (double)value);
}
else if (value is string)
{
ogrFeature.SetField(j, (string)value);
}
else if (value is DateTime)
{
DateTime dateTime = (DateTime)value;
ogrFeature.SetField(j, dateTime.Year, dateTime.Month, dateTime.Day, dateTime.Hour, dateTime.Minute, (float)dateTime.Second, 0);
}
#endregion
}
layer.CreateFeature(ogrFeature);
}
dataSource.FlushCache();
return(layer);
}
}
/// <summary>
/// LineD to shpLine
/// </summary>
/// <param name="savePath"></param>
/// <param name="aLine"></param>
public static void LineDtoshpLine(string savePath, LineD aLine)
{
OSGeo.OGR.Ogr.RegisterAll();
OSGeo.OGR.Driver dr = OSGeo.OGR.Ogr.GetDriverByName("ESRI shapefile");
OSGeo.OGR.DataSource ds = dr.CreateDataSource(savePath, null);
OSGeo.OGR.Layer fileLayer = ds.CreateLayer("", null, OSGeo.OGR.wkbGeometryType.wkbLineString, null);
OSGeo.OGR.FeatureDefn FeatDf = new OSGeo.OGR.FeatureDefn("");
OSGeo.OGR.Feature fileFeat = new OSGeo.OGR.Feature(FeatDf);
OSGeo.OGR.Geometry fileGeom = new OSGeo.OGR.Geometry(OSGeo.OGR.wkbGeometryType.wkbLineString);
fileGeom.AddPoint(aLine.Start.X, aLine.Start.Y, aLine.Start.Z);
fileGeom.AddPoint(aLine.End.X, aLine.End.Y, aLine.End.Z);
fileFeat.SetGeometry(fileGeom);
fileLayer.CreateFeature(fileFeat);
fileLayer.Dispose();
ds.Dispose();
}
public static OSGeo.OGR.Layer DS2OrgLayer(DotSpatial.Data.IFeatureSet featureSet, OSGeo.OGR.Layer layer)
{
using (OSGeo.OGR.FeatureDefn featureDefn = DS2OgrDataTable(featureSet.DataTable))
{
for (int k = 0; k < featureDefn.GetFieldCount(); k++)
{
layer.CreateField(featureDefn.GetFieldDefn(k), 0);
}
for (int i = 0; i < featureSet.NumRows(); i++)
{
DotSpatial.Data.IFeature feature = featureSet.GetFeature(i);
using (OSGeo.OGR.Feature ogrFeature = new OSGeo.OGR.Feature(featureDefn))
{
ogrFeature.SetGeometry(DS2OgrGeometry(feature.Geometry, featureSet));
for (int j = 0; j < feature.DataRow.ItemArray.Length; j++)
{
#region Set Value to Feature
object value = feature.DataRow.ItemArray.GetValue(j);
if (value is int)
{
ogrFeature.SetField(j, (int)value);
}
else if (value is double)
{
ogrFeature.SetField(j, (double)value);
}
else if (value is string)
{
ogrFeature.SetField(j, (string)value);
}
else if (value is DateTime)
{
DateTime dateTime = (DateTime)value;
ogrFeature.SetField(j, dateTime.Year, dateTime.Month, dateTime.Day, dateTime.Hour, dateTime.Minute, (float)dateTime.Second, 0);
}
#endregion
}
layer.CreateFeature(ogrFeature);
}
}
}
return(layer);
}
/// <summary>
/// 清理Layer中重复的，面积过小的featuer,返回一个新的Layer
/// </summary>
/// <param name="inLayer">源layer</param>
/// <param name="andArea">是否判断最小面积</param>
/// <param name="minArea">最小面积</param>
/// <returns></returns>
public static OSGeo.OGR.Layer cleanLayer_FF(OSGeo.OGR.Layer inLayer)
{
string oldLayerName = inLayer.GetName();
string newLayerName = oldLayerName + "Clear";
shpDataSet.deleteLayerByName(newLayerName);
OSGeo.OGR.Layer outLayer = shpDataSet.CreateLayer(newLayerName, srs, inLayer.GetGeomType(), null);
int featCount = inLayer.GetFeatureCount(0);
StaticTools.msgLine($"clean resLine... before {featCount}");
for (int i = 0; i < featCount - 1; i++)
{
bool isOnly = true;
OSGeo.OGR.Feature ori = inLayer.GetFeature(i);
OSGeo.OGR.Envelope oriEnve = new OSGeo.OGR.Envelope();
ori.GetGeometryRef().GetEnvelope(oriEnve);
double maxCha = 1;
for (int j = i + 1; j < featCount; j++)
{
OSGeo.OGR.Feature next = inLayer.GetFeature(j);
OSGeo.OGR.Envelope nextEnve = new OSGeo.OGR.Envelope();
next.GetGeometryRef().GetEnvelope(nextEnve);
if (Math.Abs(oriEnve.MaxX - nextEnve.MaxX) < maxCha &&
Math.Abs(oriEnve.MaxY - nextEnve.MaxY) < maxCha &&
Math.Abs(oriEnve.MinX - nextEnve.MinX) < maxCha &&
Math.Abs(oriEnve.MinY - nextEnve.MinY) < maxCha)
{
isOnly = false;
break;
}
}
if (isOnly)
{
outLayer.CreateFeature(ori);
}
ori.Dispose();
StaticTools.progress((i + 2) * 100 / featCount, $"{i + 1} / {featCount}");
}
if (IsDelete)
{
shpDataSet.deleteLayerByName(inLayer.GetName());
}
StaticTools.msgLine($"clean resLine... after {outLayer.GetFeatureCount(0)}");
return(outLayer);
}
public OGRCursor(OGRDataset parent, String whereClause, System.Array esriQueryFieldMap, IEnvelope env = null, int onlyOneID = -1)
{
m_isFinished = false;
m_pDataset = parent;
m_whereClause = whereClause;
if (m_whereClause != null && m_whereClause.Length > 0)
{
m_pDataset.ogrLayer.SetAttributeFilter(m_whereClause);
}
else
{
m_pDataset.ogrLayer.SetAttributeFilter(null);
}
m_envelope = env;
if (m_envelope != null)
{
m_envelope.Project(m_pDataset.SpatialReference);
m_pDataset.ogrLayer.SetSpatialFilterRect(m_envelope.XMin, m_envelope.YMin, m_envelope.XMax, m_envelope.YMax);
}
else
{
m_pDataset.ogrLayer.SetSpatialFilter(null);
}
m_esriQueryFieldMap = esriQueryFieldMap;
m_pDataset.ogrLayer.ResetReading();
m_currentOGRFeature = null;
m_onlyOneID = onlyOneID;
if (m_onlyOneID == -1)
{
NextRecord();
}
else
{
RetrieveOnlyOneRecord();
}
}
/// <summary>
/// Spatial filter using OGR
/// </summary>
/// <param name="featureSet">FeatureSet</param>
/// <param name="geometry">Spatial geometry</param>
/// <returns>Indexs of selected features</returns>
public static List <int> OgrSpatialFilter(IFeatureSet featureSet, IGeometry geometry)
{
List <int> result = new List <int>();
OSGeo.OGR.Layer layer = GIS.GDAL.VectorConverter.DS2OrgLayer(featureSet);
OSGeo.OGR.Geometry geo = GIS.GDAL.VectorConverter.DS2OgrGeometry(geometry, featureSet);
layer.SetSpatialFilter(geo);
OSGeo.OGR.Feature feature = layer.GetNextFeature();
while (feature != null)
{
result.Add(Convert.ToInt32(feature.GetFID()));
feature = layer.GetNextFeature();
}
return(result);
}
/// <summary>
/// 清理等值线上的点
/// </summary>
/// <param name="filePath"></param>
public static void claenPoint(string filePath)
{
OSGeo.OGR.Ogr.RegisterAll();
OSGeo.OGR.Driver dr = OSGeo.OGR.Ogr.GetDriverByName("ESRI shapefile");
//进来的Layer
OSGeo.OGR.DataSource oriDs = dr.Open(filePath, 0);
OSGeo.OGR.Layer oriLayer = oriDs.GetLayerByIndex(0);
//出去的Layer
if (System.IO.File.Exists(filePath.Substring(0, filePath.LastIndexOf(".")) + "_targ.shp"))
{
// UsefullTools.deleteFiles(filePath.Substring(0, filePath.LastIndexOf(".")) + "_targ.shp");
}
OSGeo.OGR.DataSource targDs = dr.CreateDataSource(filePath.Substring(0, filePath.LastIndexOf(".")) + "_targ.shp", null);
OSGeo.OGR.Layer targLayer = targDs.CreateLayer("targ", null, OSGeo.OGR.wkbGeometryType.wkbPolygon, null);
int featCount = oriLayer.GetFeatureCount(0);
for (int i = 0; i < featCount; i++)
{
///进来的Featuer
OSGeo.OGR.Feature oriFeat = oriLayer.GetFeature(i);
///把一个Featuer转为点数组
OSGeo.OGR.Geometry oriGeom = oriFeat.GetGeometryRef();
OSGeo.OGR.Geometry subGeom = oriGeom.GetGeometryRef(0);
int pointCount = subGeom.GetPointCount();
Point[] aFeat = new Point[pointCount];
for (int c = 0; c < pointCount; c++)
{
aFeat[c].X = subGeom.GetX(c);
aFeat[c].Y = subGeom.GetY(c);
aFeat[c].Z = subGeom.GetZ(c);
}
///调选点方法,得到一个新的Featuer
OSGeo.OGR.Feature newFeat = JID(aFeat);
if (newFeat != null)
{
targLayer.CreateFeature(newFeat);
}
}
oriDs.Dispose();
targDs.Dispose();
}
public void NextRecord()
{
if (m_isFinished) //error already thrown once
{
return;
}
m_currentOGRFeature = m_pDataset.ogrLayer.GetNextFeature();
if (m_currentOGRFeature == null)
{
m_isFinished = true;
throw new COMException("End of OGR Plugin cursor", S_FALSE);
}
return;
}
/// <summary>
/// Point[] to shpPoint
/// </summary>
/// <param name="savePath"></param>
/// <param name="allFeat"></param>
public static void pointGToShpPoint(string savePath, Point[] allFeat)
{
OSGeo.OGR.Ogr.RegisterAll();
OSGeo.OGR.Driver dr = OSGeo.OGR.Ogr.GetDriverByName("ESRI shapefile");
OSGeo.OGR.DataSource ds = dr.CreateDataSource(savePath, null);
OSGeo.OGR.Layer fileLayer = ds.CreateLayer("", null, OSGeo.OGR.wkbGeometryType.wkbPoint, null);
for (int i = 0; i < allFeat.Length; i++)
{
OSGeo.OGR.FeatureDefn FeatDf = new OSGeo.OGR.FeatureDefn("");
OSGeo.OGR.Feature fileFeat = new OSGeo.OGR.Feature(FeatDf);
OSGeo.OGR.Geometry fileGeom = new OSGeo.OGR.Geometry(OSGeo.OGR.wkbGeometryType.wkbPoint);
fileGeom.AddPoint(allFeat[i].X, allFeat[i].Y, allFeat[i].Z);
fileFeat.SetGeometry(fileGeom);
fileLayer.CreateFeature(fileFeat);
}
fileLayer.Dispose();
ds.Dispose();
}
/************************************** 清理等值线 *****************************************/
/// <summary>
/// 通过线长,值 清理等值线
/// </summary>
/// <param name="filePath"></param>
public static string cleanDS(string dzx)
{
Console.WriteLine("开始清理等值线！");
double aue, bzc; _标准差(dzx, out aue, out bzc);
double minLength = 50;
double maxLength = 2600;
double minValue = aue - bzc * 2;
double maxValue = aue + bzc * 2;
//open dzx
OSGeo.OGR.Ogr.RegisterAll();
OSGeo.OGR.Driver dr = OSGeo.OGR.Ogr.GetDriverByName("ESRI shapefile");
OSGeo.OGR.DataSource dzxDS = dr.Open(dzx, 0);
OSGeo.OGR.Layer dzxLayer = dzxDS.GetLayerByIndex(0);
//new a shp
string cleanline = StaticTools.tempFilePath("shp", "清理后的等值线");
OSGeo.OGR.DataSource newdzxDS = dr.CreateDataSource(cleanline, null);
OSGeo.OGR.Layer newdzxLayer = newdzxDS.CreateLayer(dzxLayer.GetName(), dzxLayer.GetSpatialRef(), dzxLayer.GetGeomType(), null);
for (int i = 0; i < dzxLayer.GetFeatureCount(0); i++)
{
OSGeo.OGR.Feature fileFeat = dzxLayer.GetFeature(i);
OSGeo.OGR.Geometry fileGeom = fileFeat.GetGeometryRef();
double FeatLength = fileGeom.Length();
bool s1 = FeatLength > minLength && FeatLength < maxLength;
double featValue = fileFeat.GetFieldAsDouble("EVE");
bool s2 = featValue > minValue && featValue < maxValue;
bool isR = fileGeom.IsRing();
if (s1 && s2 && isR)
{
newdzxLayer.CreateFeature(fileFeat);
}
fileFeat.Dispose();
}
newdzxDS.Dispose();
dzxDS.Dispose();
Console.WriteLine("清理等值线完成！");
return(cleanline);
}
/// <summary>
/// 判断两个Featuer是否重复，两外接矩形相同位置的边差小于1时为true
/// </summary>
/// <param name="ori"></param>
/// <param name="next"></param>
/// <returns></returns>
public static bool isSame(OSGeo.OGR.Feature ori, OSGeo.OGR.Feature next, double maxCha = 1)
{
OSGeo.OGR.Envelope oriEnve = new OSGeo.OGR.Envelope();
ori.GetGeometryRef().GetEnvelope(oriEnve);
OSGeo.OGR.Envelope nextEnve = new OSGeo.OGR.Envelope();
next.GetGeometryRef().GetEnvelope(nextEnve);
if (Math.Abs(oriEnve.MaxX - nextEnve.MaxX) < maxCha && //外接矩形差
Math.Abs(oriEnve.MaxY - nextEnve.MaxY) < maxCha &&
Math.Abs(oriEnve.MinX - nextEnve.MinX) < maxCha &&
Math.Abs(oriEnve.MinY - nextEnve.MinY) < maxCha)
{
return(true);
}
else
{
return(false);
}
}
public OGRCursor(OGRDataset parent, String whereClause, System.Array esriQueryFieldMap, IEnvelope env = null, int onlyOneID = -1)
{
m_isFinished = false;
m_pDataset = parent;
m_whereClause = whereClause;
if (m_whereClause != null && m_whereClause.Length > 0)
m_pDataset.OGRLayer.SetAttributeFilter(m_whereClause);
else
m_pDataset.OGRLayer.SetAttributeFilter(null);
m_envelope = env;
if (m_envelope != null)
{
m_envelope.Project(m_pDataset.SpatialReference);
m_pDataset.OGRLayer.SetSpatialFilterRect(m_envelope.XMin, m_envelope.YMin, m_envelope.XMax, m_envelope.YMax);
}
else
{
m_pDataset.OGRLayer.SetSpatialFilter(null);
}
m_esriQueryFieldMap = esriQueryFieldMap;
m_pDataset.OGRLayer.ResetReading();
m_currentOGRFeature = null;
m_onlyOneID = onlyOneID;
if (m_onlyOneID == -1)
NextRecord();
else
{
RetrieveOnlyOneRecord();
}
}
public void RetrieveOnlyOneRecord()
{
m_currentOGRFeature = m_pDataset.OGRLayer.GetFeature(m_onlyOneID);
m_isFinished = true;
}
public void NextRecord()
{
if (m_isFinished) //error already thrown once
return;
m_currentOGRFeature = m_pDataset.OGRLayer.GetNextFeature();
if (m_currentOGRFeature == null)
{
m_isFinished = true;
throw new COMException("End of OGR Plugin cursor", S_FALSE);
}
return;
}
/// <summary>
/// Creates an OGR data source from a FeatureDataTable
/// </summary>
/// <param name="table">The name of the table</param>
/// <param name="geometryType">The geometry type</param>
/// <param name="driver">The driver</param>
/// <param name="connection">The connection string</param>
/// <param name="driverOptions">The options for the driver</param>
/// <param name="layerOptions">The options for the layer</param>
public static void CreateFromFeatureDataTable(FeatureDataTable table,
OgcGeometryType geometryType, int srid, string driver, string connection, string[] driverOptions = null, string[] layerOptions = null)
{
if (table == null)
throw new ArgumentNullException("table");
if (table.Rows.Count == 0)
throw new ArgumentException("The table contains no rows", "table");
if (geometryType < OgcGeometryType.Point || geometryType > OgcGeometryType.MultiPolygon)
throw new ArgumentException("Invalid geometry type", "geometryType");
if (string.IsNullOrWhiteSpace(driver))
throw new ArgumentException("No driver specified", "driver");
var dr = OSGeo.OGR.Ogr.GetDriverByName(driver);
if (dr == null)
throw new Exception(string.Format("Cannot load driver '{0}'!", driver));
//if (!dr.TestCapability("ODrCCreateDataSource"))
// throw new Exception(string.Format("Driver '{0}' cannot create a data source!", driver));
// Create the data source
var ds = dr.CreateDataSource(connection, driverOptions);
//if (!ds.TestCapability("ODsCCreateLayer"))
// throw new Exception(string.Format("Driver '{0}' cannot create a layer!", driver));
// Create the spatial reference
var sr = new OSGeo.OSR.SpatialReference(string.Empty);
sr.ImportFromEPSG(srid);
// Create the layer
var lyr = ds.CreateLayer(table.TableName, sr, (OgrGeometryType)geometryType, layerOptions);
sr.Dispose();
//lyr.GetSpatialRef();
foreach (System.Data.DataColumn dc in table.Columns)
{
using (var fldDef = GetFieldDefinition(dc))
lyr.CreateField(fldDef, 0);
}
using (var ld = lyr.GetLayerDefn())
{
foreach (FeatureDataRow fdr in table.Rows)
{
if ((int)fdr.Geometry.OgcGeometryType != (int)geometryType)
continue;
using (var feature = new OgrFeature(ld))
{
feature.SetGeometry(OgrGeometry.CreateFromWkb(fdr.Geometry.AsBinary()));
var idx = -1;
foreach (System.Data.DataColumn dc in table.Columns)
{
idx++;
var fd = ld.GetFieldDefn(idx);
DateTime dt;
switch (fd.GetFieldType())
{
case OgrFieldType.OFTBinary:
//Nothing
break;
case OgrFieldType.OFTDate:
dt = ((DateTime)fdr[dc]).Date;
feature.SetField(idx, dt.Year, dt.Month, dt.Day, dt.Hour, dt.Minute, dt.Second, 0);
break;
case OgrFieldType.OFTDateTime:
dt = (DateTime)fdr[dc];
feature.SetField(idx, dt.Year, dt.Month, dt.Day, dt.Hour, dt.Minute, dt.Second, 0);
break;
case OgrFieldType.OFTTime:
var tod = ((DateTime)fdr[dc]).TimeOfDay;
feature.SetField(idx, 0, 0, 0, tod.Hours, tod.Minutes, tod.Seconds, 0);
break;
case OgrFieldType.OFTInteger:
feature.SetField(idx, Convert.ToInt32(fdr[dc]));
break;
case OgrFieldType.OFTIntegerList:
var il = GetIntegerList(fdr[dc], dc.DataType);
feature.SetFieldIntegerList(idx, il.Length, il);
break;
case OgrFieldType.OFTReal:
feature.SetField(idx, Convert.ToDouble(fdr[dc]));
break;
case OgrFieldType.OFTRealList:
var dl = GetDoubleList(fdr[dc], dc.DataType);
feature.SetFieldDoubleList(idx, dl.Length, dl);
break;
case OgrFieldType.OFTString:
feature.SetField(idx, Convert.ToString(fdr[dc]));
break;
case OgrFieldType.OFTStringList:
var sl = (string[])fdr[dc];
feature.SetFieldStringList(idx, sl);
break;
}
fd.Dispose();
}
lyr.CreateFeature(feature);
feature.Dispose();
}
//ld.Dispose();
}
}
lyr.Dispose();
ds.Dispose();
dr.Dispose();
}
