我有一个 VBA 宏,它使用 Microsoft MapPoint 计算电子表格中每条记录的两个位置之间的距离。我有大约 120,000 条记录要处理。该程序顺利运行了大约 10,000 次迭代,然后返回一个类型不匹配错误,我在错误处理程序中定义了 MapPoint 位置。此时,我选择“调试”,然后在不编辑任何代码的情况下继续执行,它会在同样的事情再次发生之前成功运行另外 10,000 条左右的记录。
我检查了我的数据,但我不明白为什么会出现类型不匹配,或者为什么代码会一次阻塞记录,然后在不重置任何内容的情况下,在恢复时处理相同的记录。知道为什么会发生这种情况吗?
作为参考,
- M 列包含“X County, ST”形式的位置
- AN 列包含与 ZIP 相同的单独位置
- G 列包含与 AN 相同的位置数据,但格式为“X County, ST”
Sub distance_from_res()
Dim oApp As MapPoint.Application
Dim k As Long
Dim count As Long
Dim errors As Long
k = 0
count = Sheets("i1_20041").Range("A2", Sheets("i1_20041").Range("A2").End(xlDown)).count
errors = 0
Set oApp = CreateObject("MapPoint.Application.NA.11")
oApp.Visible = False
Set objMap = oApp.NewMap
Dim objRes As MapPoint.Location
Dim objFish As MapPoint.Location
'Error executes code at 'LocError' and then returns to point of error.
On Error GoTo LocError
Do While k < count
If Sheets("i1_20041").Range("M2").Offset(k, 0) <> "" Then
'Sets MapPoint locations as [County],[State] from Excel sheet columns "INT_CNTY_ST" and "ZIP".
Set objRes = objMap.FindResults(Sheets("i1_20041").Range("AN2").Offset(k, 0)).Item(1)
Set objFish = objMap.FindResults(Sheets("i1_20041").Range("M2").Offset(k, 0)).Item(1)
'Calculates distance between two locations and prints it in appropriate cell in Column AO.
Sheets("i1_20041").Range("AO2").Offset(k, 0) = objRes.DistanceTo(objFish)
Else
errors = errors + 1
End If
k = k + 1
Loop
'Displays appropriate message at termination of program.
If errors = 0 Then
MsgBox ("All distance calculations were successful!")
Else
MsgBox ("Complete! Distance could not be calculated for " & errors & " of " & count & " records.")
End If
Exit Sub
LocError:
If Sheets("i1_20041").Range("G2").Offset(k, 0) = "" Then
errors = errors + 1
Else
'THIS IS WHERE THE ERROR OCCURS!
Set objRes = objMap.FindResults(Sheets("i1_20041").Range("G2").Offset(k, 0)).Item(1)
Set objFish = objMap.FindResults(Sheets("i1_20041").Range("M2").Offset(k, 0)).Item(1)
'Calculates distance between two locations and prints it in appropriate cell in Column AO.
Sheets("i1_20041").Range("AO2").Offset(k, 0) = objRes.DistanceTo(objFish)
End If
k = k + 1
Resume
End Sub
更新: 我采纳了@winwaed 和@Mike D 的大部分建议,我的代码现在更准确,不会因错误而窒息。然而,老问题以一种新的形式出现了。现在,经过大约 10,000 次迭代,代码继续执行,但随后会打印每条记录的第 10,000 条记录的距离。我可以在故障点重新启动代码,它会正常查找这些记录的距离。为什么会发生这种情况?我已经在下面发布了我的更新代码。
Sub distance_from_res()
Dim oApp As MapPoint.Application
Dim k As Long
Dim rc As Long
Dim errors As Long
Dim dist As Double
Dim zipRes As Range
Dim coRes As Range
Dim coInt As Range
Dim distR As Range
Set zipRes = Sheets("Sheet1").Range("C2")
Set coRes = Sheets("Sheet1").Range("B2")
Set coInt = Sheets("Sheet1").Range("E2")
Set distR = Sheets("Sheet1").Range("G2")
k = 0
rc = Sheets("Sheet1").Range("F2", Sheets("Sheet1").Range("F2").End(xlDown)).Count
errors = 0
'Start MapPoint application.
Set oApp = CreateObject("MapPoint.Application.NA.11")
oApp.Visible = False
Set objMap = oApp.NewMap
Dim objResultsRes As MapPoint.FindResults
Dim objResultsInt As MapPoint.FindResults
Dim objRes As MapPoint.Location
Dim objInt As MapPoint.Location
Do While k < rc
'Check results for Res Zip Code. If good, set first result to objRes. If not, check results for Res County,ST. If good, set first result to objRes. Else, set objRes to Nothing.
Set objResultsRes = objMap.FindResults(zipRes.Offset(k, 0))
If objResultsRes.ResultsQuality = geoFirstResultGood Then
Set objRes = objResultsRes.Item(1)
Else
Set objResultsRes = Nothing
Set objResultsRes = objMap.FindResults(coRes.Offset(k, 0))
If objResultsRes.ResultsQuality = geoFirstResultGood Then
Set objRes = objResultsRes.Item(1)
Else
If objResultsRes.ResultsQuality = geoAmbiguousResults Then
Set objRes = objResultsRes.Item(1)
Else
Set objRes = Nothing
End If
End If
End If
Set objResultsInt = objMap.FindResults(coInt.Offset(k, 0))
If objResultsInt.ResultsQuality = geoFirstResultGood Then
Set objInt = objResultsInt.Item(1)
Else
If objResultsInt.ResultsQuality = geoAmbiguousResults Then
Set objInt = objResultsInt.Item(1)
Else
Set objInt = Nothing
End If
End If
On Error GoTo ErrDist
distR.Offset(k, 0) = objRes.DistanceTo(objInt)
k = k + 1
Loop
Exit Sub
ErrDist:
errors = errors + 1
Resume Next
End Sub