剖面必威现金回扣，就是在具有高程值的raster上画一条直线，这条直线上的每个点除了x,y坐标为更具附加了高程值，便可画出高程值随直线的一个曲线必威现金回扣。高程值只是一个最简单的例子，当raster不是以高程值而是以某个我们想要的值来渲染的时候，这条曲线必威现金回扣便表达的是，随直线变化而变化的某个值的曲线必威现金回扣，开始做这个的时候遇到了一些无法解释的困难，如Com组件错误等，这里参考了韩鹏的<<ArcObject方法>>，这里推荐一下，这是本好书，值得拥有啊，以下是我的代码，我用的是ArcgisEngine来做的，不过ArcgisServer也可以实现

//得到要做剖面分析的面

IRasterLayer layer = this.axMapControl1.Map.get_Layer(0) as IRasterLayer;
IRasterSurface rasterSurf = new RasterSurfaceClass();

rasterSurf.PutRaster(layer.Raster, 0);
ISurface surface = rasterSurf as ISurface;

//得到画的直线

IPolyline inputLine = new PolylineClass();
IPoint start  = new PointClass();
start.X = -96.522;
start.Y = 25.589;
inputLine.FromPoint = start;
IPoint end = new PointClass();
end.X = 1.048;
end.Y = 28.664;
inputLine.ToPoint = end;

//用ISurface的 InterpolateShape方法，得到这条直线做剖面后的Geometry，方法说明详见帮助      

IGeometry OutShape;

object size = new object();
surface.InterpolateShape(inputLine, out OutShape, ref size);

//将结果QI为 PointCollection，QI成功显示结果是直线上单一的几个离散点，InterpolateShape会自动将分析的结果直线上选取六个等分的离散点，以这六个点的值来作曲线必威现金回扣
IPointCollection pointCollection = OutShape as IPointCollection;
IMAware maware = pointCollection as IMAware;
maware.MAware = true;
IZAware zaware = pointCollection as IZAware;
zaware.ZAware = true;
IMSegmentation mseg = pointCollection as IMSegmentation;
//设置M的值为距离
mseg.SetMsAsDistance(false);

//建立featureClass，为后面曲线必威现金回扣提供数据

IWorkspaceFactory workspaceFactory = new InMemoryWorkspaceFactoryClass();
ESRI.ArcGIS.Geodatabase.IWorkspaceName workspaceName = workspaceFactory.Create("", "MyWorkspace", null, 0);
ESRI.ArcGIS.esriSystem.IName name = (IName)workspaceName;
ESRI.ArcGIS.Geodatabase.IWorkspace inmemWor = (IWorkspace)name.Open();

IFields fields = new FieldsClass();
IFieldsEdit fieldsEdit = fields as IFieldsEdit;
IField oidField = new FieldClass();
IFieldEdit oidFieldEdit = oidField as IFieldEdit;
oidFieldEdit.Name_2 = "OID";
oidFieldEdit.Type_2 = esriFieldType.esriFieldTypeOID;
fieldsEdit.AddField(oidField);

IGeometryDef geometryDef = new GeometryDefClass();
IGeometryDefEdit geometryDefEdit = geometryDef as IGeometryDefEdit;
geometryDefEdit.GeometryType_2 = ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPoint;
geometryDefEdit.HasM_2 = true;
geometryDefEdit.HasZ_2 = true;
ISpatialReferenceFactory spatialReferenceFactory = new SpatialReferenceEnvironmentClass();
ISpatialReference spatialReference =    spatialReferenceFactory.CreateGeographicCoordinateSystem((int)esriSRGeoCSType.esriSRGeoCS_WGS1984);
ISpatialReferenceResolution spatialReferenceResolution = (ISpatialReferenceResolution)spatialReference; spatialReferenceResolution.ConstructFromHorizon();
ISpatialReferenceTolerance spatialReferenceTolerance = (ISpatialReferenceTolerance)spatialReference; spatialReferenceTolerance.SetDefaultXYTolerance();
geometryDefEdit.SpatialReference_2 = spatialReference;

IField geometryField = new FieldClass();
IFieldEdit geometryFieldEdit = (IFieldEdit)geometryField;
geometryFieldEdit.Name_2 = "Shape";
geometryFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
geometryFieldEdit.GeometryDef_2 = geometryDef;
fieldsEdit.AddField(geometryField);

IField mField = new FieldClass();
IFieldEdit mFieldEdit = (IFieldEdit)mField;
mFieldEdit.Name_2 = "M";
mFieldEdit.Type_2 = esriFieldType.esriFieldTypeDouble;
mFieldEdit.Length_2 = 8;
fieldsEdit.AddField(mField);

IField zField = new FieldClass();
IFieldEdit zFieldEdit = (IFieldEdit)zField;
zFieldEdit.Name_2 = "Z";
zFieldEdit.Type_2 = esriFieldType.esriFieldTypeDouble;
zFieldEdit.Length_2 = 8;
fieldsEdit.AddField(zField);

IFieldChecker fieldChecker = new FieldCheckerClass();
IEnumFieldError enumFieldError = null;
IFields validatedFields = null;
fieldChecker.ValidateWorkspace = inmemWor;
fieldChecker.Validate(fields, out enumFieldError, out validatedFields);

IFeatureClass featureClass = (inmemWor as IFeatureWorkspace).CreateFeatureClass("test", validatedFields, null, null, esriFeatureType.esriFTSimple, "Shape", "");

IFeatureCursor cursor = featureClass.Insert(true);
IFeatureBuffer buffer = featureClass.CreateFeatureBuffer();
int count = pointCollection.PointCount;
for (int i = 0; i < count; ++i)
{
    IPoint p = pointCollection.get_Point(i);
    buffer.Shape = p as IGeometry;
    buffer.set_Value(buffer.Fields.FindField("M"), p.M);
    buffer.set_Value(buffer.Fields.FindField("Z"), p.Z);
    cursor.InsertFeature(buffer);
}

cursor.Flush();

//开始做曲线必威现金回扣

IFeatureLayer featurelayer = new FeatureLayerClass();
featurelayer.FeatureClass = featureClass;
ITable table = featurelayer as ITable;
IDataGraph datagraph = new DataGraphClass();
datagraph.Table = table;
datagraph.FieldSet1 = "Z";
datagraph.FieldSet2 = "M";

IDataGraphProperties proper = datagraph as IDataGraphProperties;
proper.Title = "曲线必威现金回扣";
proper.SubTitle = "跟据Z和M值做的剖面必威现金回扣";
proper.GraphType = esriDataGraphTypeEnum.esriDataGraphTypeLine;
proper.GraphSubtype = esriDataGraphSubtypeEnum.esriDataGraphSubtypeLine2DSimple;
proper.ShowXAxisLabels = true;
proper.ShowLegend = false;

datagraph.Reload();
datagraph.Draw();
datagraph.ExportToFile("c:\\victorcxj.jpg");

需要注意的是，如果是在b/s上做剖面必威现金回扣开发，上面的对象都不能用new 而是用serverContext来创建， 但我在开发中遇到一个奇怪的问题就是datagraph导不出来必威现金回扣片，我后来把DataGraph用new来创建就可以了，有时候AO的东西真是奇怪到你无法解释。。。。