clsevaluatewizard.cls

FloodEvaluation-程序是gis方面的程序

        fs.Deletefolder (strGRIDPath + "\" + "CovTemp")                   'Deletefile
    End If
                
'    Dim pWks As IWorkspace
    Set pWksF = New RasterWorkspaceFactory
    Set pWks = pWksF.OpenFromFile(strGRIDPath, 0)
    Dim pGeoDs As IRasterDataset
    Set pGeoDs = pConOp.ToRasterDataset(pTempDS, "GRID", pWks, "CovTemp") '转为栅格
    
    Dim pLogicalOp As ILogicalOp
    Dim pConditionalOp As IConditionalOp
    Set pLogicalOp = New RasterMathOps
    Set pConditionalOp = New RasterConditionalOp

    Dim pZeroRaster As IRaster
    Dim pMathOp As IMathSupportOp
    Set pMathOp = New RasterMathSupportOp
    
    Set pZeroRaster = pMathOp.Minus(pGeoDs, pGeoDs)
    Dim pOutRas1 As IRaster 'GeoDataset
    Set pOutRas1 = pConditionalOp.Con(pLogicalOp.GreaterThanEqual(pGeoDs, pZeroRaster), rasLanduse) '提取洪水范围内的LU

    Set CutRasByShp = pOutRas1
    
    Set pEnv = Nothing
    Set pWks = Nothing
    Set pWksF = Nothing
    Set pConOp = Nothing
    Set pFeaLyr = Nothing
    Set pTempDS = Nothing
    Set pMathOp = Nothing
    Set pLogicalOp = Nothing
    Set pConditionalOp = Nothing
    Set pWorkspaceFactory = Nothing
    Set pFeatureWorkspace = Nothing
    
    Exit Function
ERH:
    MsgBox ERR.Description
End Function


'************************************************************************************************'''
' 评估面状财物
'************************************************************************************************'''

'************************************************************************************************'''
''''planarPropSum对面状财物进行评估
'************************************************************************************************'''
Public Function planarPropSum(pApp As IApplication) As Boolean
    On Error GoTo ERH
    
    Dim sWorkPath As String, sShapeFileName As String, sGridFileName As String
    Dim pOutRas1 As IGeoDataset
    Dim fs
    Dim strResultPath As String, strResultFile As String, strTemp As String
    Dim itemName As String, itemPrice As Integer
    Dim pPlanarPropLyr As IFeatureLayer, pFloodRangeLyr As IFeatureLayer
    
    frmEvaluatePlane.Left = (Screen.Width - frmEvaluatePlane.Width) / 2
    frmEvaluatePlane.Top = (Screen.Height - frmEvaluatePlane.Height) / 2
    frmEvaluatePlane.Show vbModal

    If frmEvaluatePlane.flagOK Then

        Set fs = CreateObject("Scripting.FileSystemObject")

        strResultFile = frmEvaluatePlane.txtPathResult          '统计的结果，shape格式
        itemName = frmEvaluatePlane.strItemName
        itemPrice = CInt(frmEvaluatePlane.strItemPrice)
        
        Set pPlanarPropLyr = frmEvaluatePlane.shpPlanarPropLyr
        Set pFloodRangeLyr = frmEvaluatePlane.shpFloodAreaLyr

        If fs.FileExists(strResultFile) Then '
             fs.DeleteFile (strResultFile)
        End If
        
        If fs.FileExists(Left(strResultFile, Len(strResultFile) - 4) + ".dbf") Then '
             fs.DeleteFile (Left(strResultFile, Len(strResultFile) - 4) + ".dbf")
        End If
        
        Call SplitPath(strResultFile, strResultPath, strTemp)
        strResultFile = strTemp

    Else
        MsgBox "放弃评估"
        planarPropSum = False
        Exit Function
    End If
    
    Call planarSum(pFloodRangeLyr, pPlanarPropLyr, strResultFile, strResultPath, itemName, itemPrice, pApp)
    
    planarPropSum = True
    Exit Function
    
ERH:
    MsgBox "受灾统计失败0" & Chr(13) & ERR.Description, vbInformation + vbOKOnly, "提示信息"
    planarPropSum = False
End Function


'************************************************************************************************'''
''''populateSum具体实现对受灾人口的统计

'************************************************************************************************'''
Public Sub planarSum(pFloodRangeLyr As IFeatureLayer, pPlanarPropLyr As IFeatureLayer, _
                     strResultFile As String, strResultPath As String, itemName As String, _
                     itemPrice As Integer, pApp As IApplication)
    
    On Error GoTo errHandle
    
    ' Create the RasterExtractionOp/MathOps object
    Dim pWorkspaceFactory As IWorkspaceFactory
    Dim pFeatureWorkspace As IFeatureWorkspace
    
    Dim pSpaRef As ISpatialReference
    Set pSpaRef = GetLayerSourceSpatialRef(pPlanarPropLyr)      'New UnknownCoordinateSystem
    
'    Set pFeatureWorkspace = Nothing
    Set pWorkspaceFactory = New ShapefileWorkspaceFactory
    Set pFeatureWorkspace = pWorkspaceFactory.OpenFromFile(strResultPath, 0)
    Dim pFlds As IFields
    Set pFlds = CreateFeatureFields(esriGeometryPolygon, True, False, pSpaRef, itemName)
    
    Call AppendField(pFlds, "地区", esriFieldTypeString, False)
    Call AppendField(pFlds, "财物总量", esriFieldTypeInteger, False)
    Call AppendField(pFlds, "面积", esriFieldTypeDouble, False)
    Call AppendField(pFlds, "受灾面积", esriFieldTypeDouble, False)
    Call AppendField(pFlds, "受灾数量", esriFieldTypeInteger, False)
    Call AppendField(pFlds, "受灾损失", esriFieldTypeDouble, False)
    
    Dim pCLSID As UID
    Set pCLSID = New UID
    pCLSID.Value = "esricore.Feature"
    Dim pFClass As IFeatureClass
    Set pFClass = pFeatureWorkspace.CreateFeatureClass(Left(strResultFile, Len(strResultFile) - 4), _
    pFlds, pCLSID, Nothing, esriFTSimple, "Shape", "")
    
    '设置有关字段的索引号
    Dim indexName As Integer, indexProp As Integer, indexFloodLoss1 As Integer
    Dim indexName1 As Integer, indexProp1 As Integer, indexFloodProp1 As Integer, indexFloodArea1 As Integer, indexArea1 As Integer
    Dim pFields As IFields
    Set pFields = pPlanarPropLyr.FeatureClass.Fields
    indexName = pFields.FindField("地区")                   '政区名称
    indexProp = pFields.FindField("财物总量")               '政区人口
    
    indexName1 = pFlds.FindField("地区")                    '政区名称
    indexProp1 = pFlds.FindField("财物总量")                '政区人口
    indexArea1 = pFlds.FindField("面积")                    '政区面积
    indexFloodArea1 = pFlds.FindField("受灾面积")           '受灾面积
    indexFloodProp1 = pFlds.FindField("受灾数量")           '受灾人口
    indexFloodLoss1 = pFlds.FindField("受灾损失")           '受灾人口
'    MsgBox indexName & "-" & indexName1 & "-" & indexProp1 & "-" & indexArea1 & "-" & indexProp
    
    Dim pOutCursor As IFeatureCursor
    Set pOutCursor = pFClass.Insert(True)
    Dim pOutBuffer As IFeatureBuffer
    Set pOutBuffer = pFClass.CreateFeatureBuffer

    Dim pFilter As IQueryFilter
    Set pFilter = New QueryFilter
    pFilter.WhereClause = ""

    Dim pFloodCursor As IFeatureCursor, pPropCursor As IFeatureCursor
    Set pPropCursor = pPlanarPropLyr.Search(pFilter, False)

    Dim sumArea As Double
    Dim pTopologOp As ITopologicalOperator, pGeoResult As IGeometry
    Dim pPropArea As IArea, pAndArea As IArea
    Dim pPropPoly As IPolygon, pFloodPoly As IPolygon
    Dim pPropFeat As IFeature, pFloodFeat As IFeature
    
    Set pPropFeat = pPropCursor.NextFeature
    ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
    Do While Not pPropFeat Is Nothing
    
        Set pTopologOp = pPropFeat.Shape
        Set pFloodCursor = pFloodRangeLyr.Search(pFilter, False)
        Set pFloodFeat = pFloodCursor.NextFeature
        sumArea = 0
        
        Do While Not pFloodFeat Is Nothing
            Set pFloodPoly = pFloodFeat.Shape
            Set pGeoResult = pTopologOp.Intersect(pFloodPoly, esriGeometry2Dimension)
            Set pAndArea = pGeoResult
            sumArea = sumArea + pAndArea.Area
            Set pFloodFeat = pFloodCursor.NextFeature
        Loop
        
        Set pOutBuffer.Shape = pPropFeat.Shape
        Set pPropArea = pPropFeat.Shape
        
        pOutBuffer.Value(indexName1) = pPropFeat.Value(indexName)                                     '统计出该区域内淹没的面积，需乘以人口密度才为受灾人口
        pOutBuffer.Value(indexProp1) = pPropFeat.Value(indexProp)                                     '统计出该区域内淹没的面积，需乘以人口密度才为受灾人口
        pOutBuffer.Value(indexArea1) = pPropArea.Area                                                 '统计出该区域内淹没的面积，需乘以人口密度才为受灾人口
        pOutBuffer.Value(indexFloodArea1) = sumArea                                                   '统计出该区域内淹没的面积，需乘以人口密度才为受灾人口
        pOutBuffer.Value(indexFloodProp1) = pPropFeat.Value(indexProp) * sumArea / pPropArea.Area     '统计出该区域内淹没的面积，需乘以人口密度才为受灾人口
        pOutBuffer.Value(indexFloodLoss1) = pOutBuffer.Value(indexFloodProp1) * itemPrice             '统计出该区域内淹没的面积，需乘以人口密度才为受灾人口
        
        pOutCursor.InsertFeature pOutBuffer
        Set pPropFeat = pPropCursor.NextFeature
    
    Loop '''''''''''''''''''''''''''''''''''''''''''''''''''''''Do While Not filterFeat Is Nothing
     
     
    Dim pMxDoc As IMxDocument
    Set pMxDoc = pApp.Document
    Dim pPolygonLayer As IFeatureLayer
    Set pPolygonLayer = New FeatureLayer
    Set pPolygonLayer.FeatureClass = pFClass
    Call setFeatureLayerRenderer(pPolygonLayer, vbBlue)
    
    pPolygonLayer.name = "受灾分布"
    pMxDoc.FocusMap.AddLayer pPolygonLayer   'pRL
    pMxDoc.ActiveView.Refresh
'    Set pPolygonLayer = Nothing
    
    Set pWorkspaceFactory = Nothing
    Set pFeatureWorkspace = Nothing
    Set pOutBuffer = Nothing
    Set pOutCursor = Nothing
    
    Exit Sub 'exit sub to avoid error handler

errHandle:
    MsgBox "受灾统计失败" & Chr(13) & ERR.Description, vbInformation + vbOKOnly, "提示信息"
 
End Sub




'**************************************************************************************************************
'''evaluateSum
'**************************************************************************************************************

'************************************************************************************************''''''
'''''' evaluateSum,调用createAndPlusFirst、plusAnother创建基于行政区的输出图层并对栅格、矢量评估结果进行统计
'************************************************************************************************''''''
Public Function evaluateSum(pApp As IApplication) As Boolean
    On Error GoTo ERH
      
'    Set pResultShpLyr = New FeatureLayer
    Dim bContinue As Boolean
    bContinue = createAndPlusFirst
    
    If Not bContinue Then Exit Function
    
    Dim nResult As Integer
    nResult = MsgBox("评价其他损失项目", vbYesNo)
    
    While nResult = vbYes
            
        Call plusAnother
        nResult = MsgBox("继续评价其他项目", vbYesNo)

    Wend
    
    Call setFeatureLayerRenderer(pResultShpLyr, vbYellow)
    
    Dim pMxDoc As IMxDocument
    Set pMxDoc = pApp.Document
    pResultShpLyr.name = "洪损统计"
    pMxDoc.FocusMap.AddLayer pResultShpLyr
    pMxDoc.ActiveView.Refresh
    
    Set pResultShpLyr = Nothing
    
    evaluateSum = True
    Exit Function
    
ERH:
    MsgBox "损失统计失败" & Chr(13) & ERR.Description, vbInformation + vbOKOnly, "提示信息"
    evaluateSum = False
End Function


'************************************************************************************************''''''
'''''' polygonSum,先创建输出矢量文件，然后统计第一个图层
'************************************************************************************************''''''
Public Function createAndPlusFirst() As Boolean
    On Error GoTo ERH
    
    Dim strResultPath As String, strResultFile As String, strTemp As String
    Dim pDistrictLyr As IFeatureLayer, inputLyr As ILayer
    Dim fs
    
    frmEvaluateSum.Left = (Screen.Width - frmEvaluateSum.Width) / 2
    frmEvaluateSum.Top = (Screen.Height - frmEvaluateSum.Height) / 2
    frmEvaluateSum.Show vbModal

    If frmEvaluateSum.flagOK Then

        Set fs = CreateObject("Scripting.FileSystemObject")
        
        Set pDistrictLyr = frmEvaluateSum.shpPolygonLyr
        Set inputLyr = frmEvaluateSum.lossLyr
        strResultFile = frmEvaluateSum.txtPathResult

        If fs.FileExists(strResultFile) Then '
             fs.DeleteFile (strResultFile)
        End If
        
        If fs.FileExists(Left(strResultFile, Len(strResultFile) - 4) + ".dbf") Then '
             fs.DeleteFile (Left(strResultFile, Len(strResultFile) - 4) + ".dbf")
        End If
        
        Call SplitPath(strResultFile, strResultPath, strTemp)
        strResultFile = strTemp
        
    Else
        MsgBox "放弃区域统计"