第九章空间查询与空间分析-江西理工大学研究生院.ppt

private IGeoProcessorResult CreateBuffer(Geoprocessor gp) { ESRI.ArcGIS.AnalysisTools.Buffer buffer = new Buffer(); IFeatureLayer bufferLayer = GetFeatureLayer(strBufferLayer); buffer.in_features = bufferLayer; bufferedFeatureClassName = strBufferLayer + _ + Buffer; string outputFullPath = System.IO.Path.Combine(strOutputPath, bufferedFeatureClassName); buffer.out_feature_class = outputFullPath; buffer.buffer_distance_or_field = bufferDistanceField; buffer.line_side = strSideType; buffer.line_end_type = strEndType; buffer.dissolve_option = strDissolveType; buffer.dissolve_field = strDissolveFields; IGeoProcessorResult results = (IGeoProcessorResult)gp.Execute(buffer, null); return results; } private void BufferOverlayAnalysis(Geoprocessor gp) { foreach (object itemChecked in chklstOverlayLayers.CheckedItems) { BufferOverlayAnalysisOneLayer(itemChecked.ToString(), gp); } } private IGeoProcessorResult BufferOverlayAnalysisOneLayer(string layerName, Geoprocessor gp) { IGpValueTableObject vtobject = new GpValueTableObjectClass(); vtobject.SetColumns(1); object row1 = ; row1 = GetFeatureLayer(layerName); vtobject.AddRow(ref row1); object row2 = ; string outputFullOverlay = System.IO.Path.Combine(strOutputPath, bufferedFeatureClassName); row2 = outputFullOverlay + .shp; vtobject.AddRow(ref row2); IVariantArray pVarArray = new VarArrayClass(); pVarArray.Add(vtobject); string outputFullPath = System.IO.Path.Combine(strOutputPath, layerName + _ + BufferOverlay.shp); pVarArray.Add(outputFullPath); pVarArray.Add(strJoinAttributeType); pVarArray.Add(tolerance); pVarArray.Add(strOutputFeatureType); IGeoProcessorResult