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如果有人可以給我一些幫助，我將非常感激。使用VBA將矩陣相乘並將結果保存在文本文件中
我很熟悉VBA和我可以寫簡單的代碼，並從其他自定義代碼。我已經寫/定製/複製幾件VBA代碼做以下（其中複製請註明出處）：
- 選擇2個不同的CSV文件，它代表2個矩陣相同的列和相同的行。
- 乘以矩陣中的每個單元格。
- 返回結果。
不幸的是我不能似乎能夠得到它來運行。 任何想法我沒有做得對嗎？ 請參閱下面的代碼。非常感謝。 代碼從以前的版本
Public Sub doIt()
Dim sourceFile As String
Dim destinationFile As String
Dim data As Variant
Dim result As Variant
Dim sourceFile2 As String
Dim datarain As Variant
sourceFile = "C:\file1.csv"
sourceFile2 = "C:\file2.csv"
destinationFile = "C:\file3.txt"
data = getDataFromFile(sourceFile, ",")
datarain = getDataFromFile(sourceFile2, ",")
If Not isArrayEmpty(data) Then
result = MMULT2_FUNC(data, datarain)
writeToCsv result, destinationFile, ","
Else
MsgBox ("Empty file")
End If
End Sub
Function MMULT2_FUNC(ByRef ADATA_RNG As Variant, _
ByRef BDATA_RNG As Variant)
Dim i As Long
Dim j As Long
Dim k As Long
Dim ANROWS As Long
Dim BNROWS As Long
Dim ANCOLUMNS As Long
Dim BNCOLUMNS As Long
Dim ADATA_MATRIX As Variant
Dim BDATA_MATRIX As Variant
Dim TEMP_MATRIX As Variant
On Error GoTo ERROR_LABEL
ADATA_MATRIX = ADATA_RNG
BDATA_MATRIX = BDATA_RNG
ANROWS = UBound(ADATA_MATRIX, 1)
BNROWS = UBound(BDATA_MATRIX, 1)
ANCOLUMNS = UBound(ADATA_MATRIX, 2)
BNCOLUMNS = UBound(BDATA_MATRIX, 2)
If ANCOLUMNS <> BNROWS Then: GoTo ERROR_LABEL
ReDim TEMP_MATRIX(1 To ANROWS, 1 To BNCOLUMNS)
For i = 1 To ANROWS
For j = 1 To BNCOLUMNS
TEMP_MATRIX(i, j) = 0
For k = 1 To ANCOLUMNS
TEMP_MATRIX(i, j) = TEMP_MATRIX(i, j) + ADATA_MATRIX(i, k) * _
BDATA_MATRIX(k, j)
Next k
Next j
Next i
MMULT2_FUNC = TEMP_MATRIX
Exit Function
ERROR_LABEL:
MMULT2_FUNC = Err.Number
End Function
Public Sub writeToCsv(parData As Variant, parFileName As String, parDelimiter As String)
If getArrayNumberOfDimensions(parData) <> 2 Then Exit Sub
Dim i As Long
Dim j As Long
Dim FileNum As Long
Dim locLine As String
Dim locCsvString As String
FileNum = FreeFile
If Dir(parFileName) <> "" Then Kill (parFileName)
Open parFileName For Binary Lock Read Write As #FileNum
For i = LBound(parData, 1) To UBound(parData, 1)
locLine = ""
For j = LBound(parData, 2) To UBound(parData, 2)
If IsError(parData(i, j)) Then
locLine = locLine & "#N/A" & parDelimiter
Else
locLine = locLine & parData(i, j) & parDelimiter
End If
Next j
locLine = Left(locLine, Len(locLine) - 1)
If i <> UBound(parData, 1) Then locLine = locLine & vbCrLf
Put #FileNum, , locLine
Next i
error_handler:
Close #FileNum
End Sub
Public Function isArrayEmpty(parArray As Variant) As Boolean
'Returns false if not an array or dynamic array that has not been initialised (ReDim) or has been erased (Erase)
If IsArray(parArray) = False Then isArrayEmpty = True
On Error Resume Next
If UBound(parArray) < LBound(parArray) Then isArrayEmpty = True: Exit Function Else: isArrayEmpty = False
End Function
Public Function getArrayNumberOfDimensions(parArray As Variant) As Long
'Returns the number of dimension of an array - 0 for an empty array.
Dim i As Long
Dim errorCheck As Long
If isArrayEmpty(parArray) Then Exit Function 'returns 0
On Error GoTo FinalDimension
'Visual Basic for Applications arrays can have up to 60000 dimensions
For i = 1 To 60001
errorCheck = LBound(parArray, i)
Next i
'Not supposed to happen
getArrayNumberOfDimensions = 0
Exit Function
FinalDimension:
getArrayNumberOfDimensions = i - 1
End Function
Private Function getDataFromFile(parFileName As String, parDelimiter As String, Optional parExcludeCharacter As String = "") As Variant
'parFileName is supposed to be a delimited file (csv...)
'parDelimiter is the delimiter, "," for example in a comma delimited file
'Returns an empty array if file is empty or can't be opened
'number of columns based on the line with the largest number of columns, not on the first line
'parExcludeCharacter: sometimes csv files have quotes around strings: "XXX" - if parExcludeCharacter = """" then removes the quotes
Dim locLinesList() As Variant
Dim locData As Variant
Dim i As Long
Dim j As Long
Dim locNumRows As Long
Dim locNumCols As Long
Dim fso As Variant
Dim ts As Variant
Const REDIM_STEP = 10000
Set fso = CreateObject("Scripting.FileSystemObject")
On Error GoTo error_open_file
Set ts = fso.OpenTextFile(parFileName)
On Error GoTo unhandled_error
'Counts the number of lines and the largest number of columns
ReDim locLinesList(1 To 1) As Variant
i = 0
Do While Not ts.AtEndOfStream
If i Mod REDIM_STEP = 0 Then
ReDim Preserve locLinesList(1 To UBound(locLinesList, 1) + REDIM_STEP) As Variant
End If
locLinesList(i + 1) = Split(ts.ReadLine, parDelimiter)
j = UBound(locLinesList(i + 1), 1) 'number of columns
If locNumCols < j Then locNumCols = j
If j = 13 Then
j = j
End If
i = i + 1
Loop
ts.Close
locNumRows = i
If locNumRows = 0 Then Exit Function 'Empty file
ReDim locData(1 To locNumRows, 1 To locNumCols + 1) As Variant
'Copies the file into an array
If parExcludeCharacter <> "" Then
For i = 1 To locNumRows
For j = 0 To UBound(locLinesList(i), 1)
If Left(locLinesList(i)(j), 1) = parExcludeCharacter Then
If Right(locLinesList(i)(j), 1) = parExcludeCharacter Then
locLinesList(i)(j) = Mid(locLinesList(i)(j), 2, Len(locLinesList(i)(j)) - 2) 'If locTempArray = "", Mid returns ""
Else
locLinesList(i)(j) = Right(locLinesList(i)(j), Len(locLinesList(i)(j)) - 1)
End If
ElseIf Right(locLinesList(i)(j), 1) = parExcludeCharacter Then
locLinesList(i)(j) = Left(locLinesList(i)(j), Len(locLinesList(i)(j)) - 1)
End If
locData(i, j + 1) = locLinesList(i)(j)
Next j
Next i
Else
For i = 1 To locNumRows
For j = 0 To UBound(locLinesList(i), 1)
locData(i, j + 1) = locLinesList(i)(j)
Next j
Next i
End If
getDataFromFile = locData
Exit Function
error_open_file: 'returns empty variant
unhandled_error: 'returns empty variant
End Function
'不幸的是，我似乎無法得到這個運行'然後請再試一次。調試並嘗試隔離問題並用任何錯誤消息更新您的問題。 SO不是調試服務。 –
我的版本實際上正在運行。我的問題是它不打印輸出文件。 – Mary
看，這應該在問題中去！它沒有在任何地方說出問題所在。所以你的問題相當於_help我調試此代碼_... :) –