Fastest method to achieve this output matching using Excel VBA - excel

Question

I have a range with several series of dates and values
Input
Output
And i need this output, a series of dates ( using the min date and max date from input ).
If output date matches with the input date of a series then set the value of this day if not set a 0. I have tried all kind of loops but i have 40 series o dates and values ( 80 columns x 2000 rows ) and i can't get anything fast.

Answer 1

Please, test the next code. You must take care that the format in the analyzed range to be the same as the one in the built range (dd/mm/yyyy). It returns the processed array in another sheet (sh1). I used the next sheet. If it is empty in your case, you can use the code as it is. There must not exist other records in the first row, except the last Valuex. The code can be adapted to search this header type, but it is not the object of the solution:
Sub CentralizeDateValues()
Dim sh As Worksheet, sh1 As Worksheet, lastR As Long, rngD As Range, lastCol As Long, lastColL As String
Dim arrD1, arrD2, arrGen, minD As Date, maxD As Date, i As Long, j As Long
Dim arrOddCols, arrCols, strCols As String, NoD As Long, mtch, col As Long, StartTime As Date
Set sh = ActiveSheet
Set sh1 = sh.Next 'use here the sheet you need (where to return the processed range)
lastR = sh.UsedRange.rows.Count 'last row
lastCol = sh.cells(1, sh.Columns.Count).End(xlToLeft).Column 'last column
'extract the odd columns number in an array:
arrOddCols = Evaluate("TRANSPOSE(ROW(1:" & lastCol / 2 & ")*2-1)")
Debug.Print Join(arrOddCols, "|"): 'just to visually check it. Comment the line after understanding what the above line does
'obtain the columns letters array:
ReDim arrCols(1 To UBound(arrOddCols))
For i = 1 To UBound(arrOddCols)
arrCols(i) = Split(cells(1, arrOddCols(i)).Address, "$")(1)
Next i
strCols = Join(arrCols, "1,") & "1": Debug.Print strCols 'just to visually check it.
Set rngD = Intersect(sh.UsedRange, sh.Range(strCols).EntireColumn) ' build the range where to match max/min dates
minD = WorksheetFunction.min(rngD)
maxD = WorksheetFunction.Max(rngD)
NoD = maxD - minD + 1 'number the days in the range betweenthe min and max dates
'build a continuous date array from min to max:
arrD1 = Evaluate("TEXT(DATE(" & Year(minD) & "," & month(minD) & ",row(" & Day(minD) & ":" & NoD & ")),""dd/mm/yyyy"")")
Debug.Print Join(Application.Transpose(arrD1), "|") 'just to visually check it.
arrD2 = arrD1 'clone the built dates array
ReDim Preserve arrD2(1 To UBound(arrD1), 1 To UBound(arrCols) + 1) 'add the necessary columns for Values
StartTime = Timer 'start the timer to count the time spent by the following code.
arrGen = sh.Range("A2", sh.cells(lastR, lastCol)).Value: col = 1
For i = 1 To UBound(arrGen)
For j = 1 To UBound(arrGen, 2) - 1 Step 2 'iterate from two to two columns to check dates (as string) and extract values
If arrGen(i, j) <> "" Then
col = col + 1
mtch = Application.match(CStr(arrGen(i, j)), arrD1, True)
If IsNumeric(mtch) Then
arrD2(mtch, col) = arrGen(i, j + 1)
Else
arrD2(mtch, col) = "strange..." 'the code reaches this line only if a mistake is in the Dates range...
End If
End If
Next j
col = 1 'reinitialize the variable to set the column where the value to be placed
Next i
'drop the processed array content at once
sh1.Range("A2").Resize(UBound(arrD2), UBound(arrD2, 2)).Value = arrD2
Sub CentralizeDateLongValues()
Dim sh As Worksheet, sh1 As Worksheet, lastR As Long, rngD As Range, lastCol As Long, lastColL As String
Dim arrD1, arrD2, arrGen, minD As Date, maxD As Date, i As Long, j As Long
Dim arrOddCols, arrCols, strCols As String, NoD As Long, mtch, col As Long, StartTime As Date
Set sh = ActiveSheet
Set sh1 = sh.Next 'use here the sheet you need (where to return the processed range)
lastR = sh.UsedRange.rows.Count 'last row
lastCol = sh.cells(1, sh.Columns.Count).End(xlToLeft).Column 'last column
'extract the odd columns number in an array:
arrOddCols = Evaluate("TRANSPOSE(ROW(1:" & lastCol / 2 & ")*2-1)")
Debug.Print Join(arrOddCols, "|"): 'just to visually check it. Comment the line after understanding what the above line does
'obtain the columns letters array:
ReDim arrCols(1 To UBound(arrOddCols))
For i = 1 To UBound(arrOddCols)
arrCols(i) = Split(cells(1, arrOddCols(i)).Address, "$")(1)
Next i
strCols = Join(arrCols, "1,") & "1": Debug.Print strCols 'just to visually check it.
Set rngD = Intersect(sh.UsedRange, sh.Range(strCols).EntireColumn) ' build the range where to match max/min dates
minD = WorksheetFunction.min(rngD)
maxD = WorksheetFunction.Max(rngD)
NoD = maxD - minD + 1 'number the days in the range betweenthe min and max dates
'build a continuous date array from long numbers, corespondent to min and max dates:
arrD1 = Evaluate("row(" & CLng(minD) & ":" & CLng(maxD) & ")")
'Debug.Print Join(Application.Transpose(arrD1), "|"): 'Stop
arrD2 = arrD1 ''clone the built dates arary
ReDim Preserve arrD2(1 To UBound(arrD1), 1 To UBound(arrCols) + 1) 'add the necessary columns for Values
StartTime = Timer 'start the timer to count the time spent by the following code.
arrGen = sh.Range("A2", sh.cells(lastR, lastCol)).Value2: col = 1
For i = 1 To UBound(arrGen)
For j = 1 To UBound(arrGen, 2) - 1 Step 2 'iterate from two to two columns to check dates (as string) and extract values
If arrGen(i, j) <> "" Then
col = col + 1
mtch = Application.match(arrGen(i, j), arrD1, True)
If IsNumeric(mtch) Then
arrD2(mtch, col) = arrGen(i, j + 1)
Else
arrD2(mtch, col) = "strange..." 'the code reaches this line only if a mistake is in the Dates range...
End If
End If
Next j
col = 1 'reinitialize the variable to set the column where the value to be placed
Next i
'drop the processed array content at once
With sh1.Range("A2").Resize(UBound(arrD2), UBound(arrD2, 2))
.Value2 = arrD2
.Columns(1).NumberFormat = "dd/mm/yyyy"
End With
'put headers:
Dim arrHd: arrHd = Application.Transpose(Evaluate("row(1:" & UBound(arrD2, 2) - 1 & ")"))
arrHd = Split("Date|Value" & Join(arrHd, "|Value"), "|")
sh1.Range("A1").Resize(1, UBound(arrHd) + 1).Value = arrHd: sh1.Activate
MsgBox "Ready..." & vbCrLf & _
" (" & Format(Timer - StartTime, "00.00") & " seconds)"
End Sub
End Sub
It returns in "A1" of the next sheet the header and in "A2" the processed array.
Please, send some feedback after testing it. I am curious how much it takes for a big range. I tested it on a small range, but solution must run on any range...
Edited:
Please, test the following version. It uses a Long numbers array, corresponding to the necessary Dates range. This allows using value2 to create the global array, which allows a (little) faster iteration and does no need the CStr conversion. Not date format dependent, too:
Sub CentralizeDateLongValues()
Dim sh As Worksheet, sh1 As Worksheet, lastR As Long, rngD As Range, lastCol As Long, lastColL As String
Dim arrD1, arrD2, arrGen, minD As Date, maxD As Date, i As Long, j As Long
Dim arrOddCols, arrCols, strCols As String, NoD As Long, mtch, col As Long, StartTime As Date
Set sh = ActiveSheet
Set sh1 = sh.Next 'use here the sheet you need (where to return the processed range)
lastR = sh.UsedRange.rows.Count 'last row
lastCol = sh.cells(1, sh.Columns.Count).End(xlToLeft).Column 'last column
'extract the odd columns number in an array:
arrOddCols = Evaluate("TRANSPOSE(ROW(1:" & lastCol / 2 & ")*2-1)")
Debug.Print Join(arrOddCols, "|"): 'just to visually check it. Comment the line after understanding what the above line does
'obtain the columns letters array:
ReDim arrCols(1 To UBound(arrOddCols))
For i = 1 To UBound(arrOddCols)
arrCols(i) = Split(cells(1, arrOddCols(i)).Address, "$")(1)
Next i
strCols = Join(arrCols, "1,") & "1": Debug.Print strCols 'just to visually check it.
Set rngD = Intersect(sh.UsedRange, sh.Range(strCols).EntireColumn) ' build the range where to match max/min dates
minD = WorksheetFunction.min(rngD)
maxD = WorksheetFunction.Max(rngD)
NoD = maxD - minD + 1 'number the days in the range betweenthe min and max dates
'build a continuous date array from long numbers, corespondent to min and max dates:
arrD1 = Evaluate("row(" & CLng(minD) & ":" & CLng(maxD) & ")")
'Debug.Print Join(Application.Transpose(arrD1), "|"): 'Stop
arrD2 = arrD1 ''clone the built dates arary
ReDim Preserve arrD2(1 To UBound(arrD1), 1 To UBound(arrCols) + 1) 'add the necessary columns for Values
StartTime = Timer 'start the timer to count the time spent by the following code.
arrGen = sh.Range("A2", sh.cells(lastR, lastCol)).Value2: col = 1
For i = 1 To UBound(arrGen)
For j = 1 To UBound(arrGen, 2) - 1 Step 2 'iterate from two to two columns to check dates (as string) and extract values
If arrGen(i, j) <> "" Then
col = col + 1
mtch = Application.match(arrGen(i, j), arrD1, True)
If IsNumeric(mtch) Then
arrD2(mtch, col) = arrGen(i, j + 1)
Else
arrD2(mtch, col) = "strange..." 'the code reaches this line only if a mistake is in the Dates range...
End If
End If
Next j
col = 1 'reinitialize the variable to set the column where the value to be placed
Next i
'drop the processed array content at once
Dim rngBlank As Range
With sh1.Range("A2").Resize(UBound(arrD2), UBound(arrD2, 2))
.Value2 = arrD2
.Columns(1).NumberFormat = "dd/mm/yyyy"
.EntireColumn.AutoFit
.Borders(xlEdgeLeft).Weight = xlThin
.Borders(xlEdgeTop).Weight = xlThin
.Borders(xlEdgeBottom).Weight = xlThin
.Borders(xlEdgeRight).Weight = xlThin
.Borders(xlInsideVertical).Weight = xlThin
.Borders(xlInsideHorizontal).Weight = xlThin
.BorderAround Weight:=xlThick
On Error Resume Next 'for the case (even imporbable) that no any blank cell will exist...
Set rngBlank = .SpecialCells(xlCellTypeBlanks)
On Error GoTo 0
End With
If Not rngBlank Is Nothing Then rngBlank.Value = 0
'put headers:
Dim arrHd: arrHd = Application.Transpose(Evaluate("row(1:" & UBound(arrD2, 2) - 1 & ")"))
arrHd = Split("Date|Value" & Join(arrHd, "|Value"), "|")
With sh1.Range("A1").Resize(1, UBound(arrHd) + 1)
.Value = arrHd
.Font.Bold = True
.EntireColumn.AutoFit
.Borders(xlInsideVertical).Weight = xlThin
.BorderAround Weight:=xlThick
End With
sh1.Activate
MsgBox "Ready..." & vbCrLf & _
" (" & Format(Timer - StartTime, "00.00") & " seconds)"
End Sub
Please, send some feedback after testing it...