ptopo

topology creation method will invalidate the workspace. Generally, ArcSDE is used, and the element classes rarely do not register the version. Without the registration version, version tracing cannot be achieved.You cannot even cancel and redo the edits. Topology checkTopology check with a registered version must be performed between one edit operation.''' ''' Performs a topology check on the specified layer and adds the topology result layer to the map ''' ''' ''' ''' Public sub validatetopol

Arcengine implements merge functions Private igeometry getgeo (ifeaturelayer pflyr){Ienumgeometry pgos = new enumfeaturegeometryclass ();Ienumgeometrybind pgeosbind = pgos as ienumgeometrybind;Ifeatureselection pflyrselection = pflyr as ifeatureselection;Pflyrselection. selectfeatures (null, esriselectionresultenum. esriselectionresultnew, false); pgeosbind. bindgeometrysource (null, pflyrselection. selectionset );Pgos. Reset ();Ipolympus Gon spoly = new polygonclass ();Itopologicaloperator

Delphi code // Determine the object self-intersection Function isselfcross (pgeometry: igeometry): Boolean;VaRPtopo: itopologicaloperator2;B: wordbool;BeginPtopo: = pgeometry as itopologicaloperator2;Ptopo. set_isknownsimple (false );Ptopo. get_issimple (B );Result: = B; End; C # code // Determine the object self-intersectionPublic static bool isselfcross (igeometry pgeometry){Itopologicaloperator2 ptopolog

This article simulates the identify (recognition) function in ArcMap by clicking on the feature to highlight it and pop up its property sheet! This article only made a click query!The environment used in this article is vs2010,aecengine based on the C # language, and the interface is made with Dev, which is slightly better than the Windows-brought form, with the following effects:Main implementation code (under Axmapcontrol1_onmousedown):1 itopologicaloperator

missing2 = type. missing; ppath. addsegment (newline as isegment, ref missing1, ref missing2); ppolyline. addgeometry (ppath as igeometry, ref missing1, ref missing2); Ielement element = drawlinesymbol (ppolyline as igeometry, pcolor );Pgraph. addelement (element, 0 );Pactiveview. partialrefresh (esriviewdrawphase. esriviewgraphics, null, null ); Itopologicaloperator ptopo = ppolygon as itopologicaloperator; // ppolygon PolygonIgeometrycollection

Pfeatureclass=Pfeaturelayer.featureclass;//set the location of the click PointIPoint point =PActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint (e.x, e.y); Itopologicaloperator Ptopo= Point asItopologicaloperator;DoubleLength;length= Convertpixelstomapunits (Pactiveview,4); Igeometry pbuffer=ptopo.buffer (length); Igeometry pgeomentry=Pbuffer.envelope;//Space FilterIspatialfilter Pspatialfilter =NewSpatialfilterclass ();p spatialfilter.geometr

ifeaturelayer; ifeatureclass pfeatureclass = pfeaturelayer. featureclass; // set the position of the click point. ipoint point = pactiveview. screendisplay. displaytransformation. tomappoint (E. x, E. y); itopologicaloperator ptopo = point as itopologicaloperator; double length; length = convertpixelstomapunits (pactiveview, 4); igeometry pbuffer = pt OPO. buffer (length); igeometry pgeomentry = pbuffer. envelope; // The space filter ispatialfilter p

PublicIFeature Getfeatureonmousedown (IPoint point) {Try{ILayer layer= Common.getlayerbyname (MMap,"plots"); if(Layer = =NULL) {MessageBox.Show ("please load parcel layers! ","Tips"); return NULL; } //Ifeaturelayer flayer = layer as Ifeaturelayer; //ifeatureselection featureselection = Flayer as ifeatureselection; //featureselection.clear (); //if (featureselection = = null)//{ //return null; //}Ifeaturelayer Featurelayer= Layer asIfeaturelayer; if(Featurelayer = =N

)); memset (Power,-1,sizeof(Power)); for(inti =0; I i) Mmap[i].clear ();}voidtopo () {inti,j; intTot =-1, index=0; for(i=1; i) { if(cnt[i]==0) St[++tot] =i; //PF ("%d", St[tot]); } //Blank; while(tot>=0) { intxx = st[tot--]; result[++index] =xx; ints =mmap[xx].size (); //PF ("tot%d\n", tot); for(j=0; j) {cur=Mmap[xx][j]; inty =CUR.V; //PF ("xx%d y%d", xx,y);cnt[y]--; if(cnt[y]==0) {st[++tot] =y; //PF ("tot%d\n", tot); //PF ("y%d", y); } }

(Ppolygon)-20.00000000, point. Y); +Ipolyline PLine =NewPolylineclass ();//define Ray APline.topoint =Topoint; atPline.frompoint =Point ; - -Itopologicaloperator Ptopo = Ppolygon asItopologicaloperator; -Igeometrycollection Pgeocol = Ptopo.intersect ((igeometry) pLine, esrigeometrydimension.esrigeometry0dimension) asigeometrycollection; -Ipointcollection Ppointcol = Pgeocol asipointcollection; - if((ppointcol.pointcount)%2==0) in

(Snappoint! =NULL Snaptime = =0) Elementmoveto (Snappoint, axMapControl1); }}/// ///Capture/// /// /// /// /// /// PublicIPoint Snapping (DoubleXDoubley, Ifeaturelayer Ifeaturelyr, Axmapcontrol axMapControl1) {IPoint Ihitpoint=NULL; IMAP IMAP=Axmapcontrol1.map; Iactiveview IView=Axmapcontrol1.activeview; Ifeatureclass IFCLSS=Ifeaturelyr.featureclass; IPoint Point=NewPointclass (); Point. Putcoords (x, y); DoubleLength = Convertpixelstomapunits (Axmapcontrol1.activeview,8); Itopologicaloperat