Excel stops responding while executing loop - excel

ws1lastrow value in the code below is 147583
I am executing the code below from within the VB Editor. Debug.print is used to keep a track of rows processed. ws1lastrow value is 147583
After executing till 5000 or 6000 (every time the count changes), the Excel stops responding and I have to restart and run.
Any reason why this happens and any solutions/tips for handling this?
Sub IdentifyMissingsNew()
Dim ws1 As Worksheet
Dim rws As Worksheet
Set ws1 = ThisWorkbook.Sheets("New")
Set rws = ThisWorkbook.Sheets("DelInt")
ws1lastrow = ws1.Cells(Rows.Count, 1).End(xlUp).Row
Set lookuprange = rws.Range("a1").CurrentRegion
For i = 2 To ws1lastrow
ws1.Cells(i, "ae") = Application.VLookup(ws1.Cells(i, "a"), lookuprange, 3, False)
Debug.Print i
Next i
End Sub

In a quick test this completed a lookup of 200k rows against a table of 100k values in just less than 3 sec.
It's a bit more complex than your original code, but if you want to optimize for speed that's sometimes unavoidable.
Notes:
use a scripting dictionary as a lookup
read/write all values as arrays for maximum speed
Code:
Sub IdentifyMissingsNew()
Dim ws1 As Worksheet
Dim rws As Worksheet, t, arr1, arr2
Dim dict As Object, rw As Range, res(), arr, nR As Long, i As Long
Set ws1 = ThisWorkbook.Sheets("New")
Set rws = ThisWorkbook.Sheets("DelInt")
Set dict = CreateObject("scripting.dictionary")
t = Timer
'create a lookup from two arrays
arr1 = rws.Range("a1").CurrentRegion.Columns(1).Value
arr2 = rws.Range("a1").CurrentRegion.Columns(3).Value
For i = 2 To UBound(arr1, 1)
dict(arr1(i, 1)) = arr2(i, 1)
Next i
Debug.Print "created lookup", Timer - t
'get the values to look up
arr = ws1.Range(ws1.Range("A2"), ws1.Cells(Rows.Count, 1).End(xlUp))
nR = UBound(arr, 1) '<<number of "rows" in your dataset
ReDim res(1 To nR, 1 To 1) '<< resize the output array to match
'perform the lookup
For i = 1 To nR
If dict.exists(arr(i, 1)) Then
res(i, 1) = dict(arr(i, 1))
Else
res(i, 1) = "No match!"
End If
Next i
ws1.Range("AE2").Resize(nR, 1).Value = res '<< populate the results
Debug.Print "Done", Timer - t
End Sub

Related

Slowness on my code while looping through rows

Set WB = Thisworkbook
Set wk = WB.Sheets("Final")
Set ws = WB.Sheets("OIT-Temp")
irow = wk.Range("B65000").End(xlUp).Row 'Find last row
For i = 2 To irow Step 1
If not wk.Cells(i, 2).FormulaR1C1 = "#N/A" Then
wk.cells(i, 2).copy ws.Cells(i, 2)
wk.cells(i,3).Value = 128
Else
wk.Cells(i, 3).Value = 198
End if
Next i
I'm here facing too much of lag while running this code and unable to understand what's wrong with my code
Please, try the next adapted code. It uses arrays, mostly working in memory and drops the processed arrays at once. That's why it should be very fast:
Sub speedUpCode()
Dim WB As Workbook, wk As Worksheet, ws As Worksheet, iRow As Long, arr, arrCopy, i As Long
Set WB = ThisWorkbook
Set wk = WB.Sheets("Final")
Set ws = WB.Sheets("OIT-Temp")
iRow = wk.Range("B" & wk.rows.count).End(xlUp).row 'Find last row
arr = wk.Range("B2:C" & iRow).Value2 'place the range in an array for faster iteration
arrCopy = ws.Range("B2:B" & iRow).Value2 'place the range in an array for faster iteration
For i = 1 To UBound(arr)
If Not CStr(arr(i, 1)) = "Error 2042" Then ''#N/A
arrCopy(i, 1) = arr(i, 1)
arr(i, 2) = 128
Else
arr(i, 2) = 198
End If
Next i
'drop the processed array values:
wk.Range("B2").Resize(UBound(arr), 2).Value2 = arr
ws.Range("B2").Resize(UBound(arrCopy), 1).Value2 = arrCopy
End Sub
Some general points:
Indent your code.
Give your variables meaningful names.
Normal to write positive code block in if/else first.
I'm not sure how you're doing an xlUp on an entire row.
For this specific problem, reading and writing cells is computationally expensive. You can remove a lot of this by reading and writing data in bulk and working with your data in arrays in memory.
Try this and see if it speeds things up.
Sub FastReadWrite()
' Set the range references.
With ThisWorkbook
With .Sheets("Final")
Dim maxRow As Long
maxRow = .Range("B65000").End(xlUp).Row
Dim finalData As Range
Set finalData = .Range("B2:C" & maxRow)
End With
Dim oitTemData As Range
Set oitTemData = .Sheets("OIT-Temp") _
.Range("B2:C" & maxRow)
End With
' Read the data from the ranges into memory.
Dim fArray() As Variant: fArray = finalData.Formula2R1C1
Dim tArray() As Variant: tArray = oitTemData.Formula2R1C1
' Main logic loop.
Dim i As Long
For i = 1 To UBound(fArray, 1)
If fArray(i, 1) = "#N/A" Then
fArray(i, 2) = 198
Else
tArray(i, 1) = fArray(i, 1)
fArray(i, 2) = 128
End If
Next i
' Write the data to the ranges.
finalData.Formula2R1C1 = fArray
oitTemData.Formula2R1C1 = tArray
End Sub

Getting the maximum value of a specific column in a 2d array [duplicate]

I use the code hereunder to calculate max values as described in this post (vba max value of group of values). The code works great but once I have more than 65k lines I get a data type mismatch when trying to pase the array:
sht.Range(Cells(1, lColumn), Cells(last.Row, lColumn)).Value = Application.Index(groupsArray, , lColumn)
Could somebody help me to slice the array in chunks. I have tried to get it working myself but without any luck.
Sub FillGroupsMax()
Dim lColumn As Long
Dim sht As Worksheet
Dim groupsArray As Variant 'array with all group infomation
Dim groupsSeen As Variant 'array with group infomation already seen
Application.ScreenUpdating = False 'stop screen updating makes vba perform better
Set sht = ThisWorkbook.Worksheets("import")
Set last = sht.Range("A:A").Find("*", Cells(1, 1), searchdirection:=xlPrevious) 'last cell with value in column A
lColumn = sht.Cells(1, Columns.Count).End(xlToLeft).Column
groupsArray = sht.Range(Cells(1, 1), Cells(last.Row, lColumn))
'collect all the information on the Sheet into an array
'Improves performance by not visiting the sheet
For dRow = 2 To last.Row 'for each of the rows skipping header
'check if group as already been seen
If inArrayValue(Cells(dRow, 1).Value, groupsSeen) > 0 Then
'if it has been seen/calculated attribute value
'Cells(dRow, 4).Value = inArrayValue(Cells(dRow, 1).Value, groupsSeen)
groupsArray(dRow, lColumn) = inArrayValue(Cells(dRow, 1).Value, groupsSeen)
Else
'if it hasn't been seen then find max
'Cells(dRow, 4).Value = getMax(Cells(dRow, 1).Value, groupsArray)
groupsArray(dRow, lColumn) = getMax(Cells(dRow, 1).Value, groupsArray, lColumn)
'array construction from empty
If IsEmpty(groupsSeen) Then
ReDim groupsSeen(0)
'groupsSeen(0) = Array(Cells(dRow, 1).Value, Cells(dRow, 4).Value)
groupsSeen(0) = Array(groupsArray(dRow, 1), groupsArray(dRow, lColumn))
'attribute value to array
Else
ReDim Preserve groupsSeen(0 To UBound(groupsSeen) + 1)
groupsSeen(UBound(groupsSeen)) = Array(groupsArray(dRow, 1), groupsArray(dRow, lColumn))
End If
End If
Next
sht.Range(Cells(1, lColumn), Cells(last.Row, lColumn)).Value = Application.Index(groupsArray, , lColumn)
'reactivate Screen updating
Application.ScreenUpdating = True
End Sub
Function getMax(group As String, groupsArray As Variant, lColumn As Long) As Double
'for each in array
For n = 1 To UBound(groupsArray)
'if its the same group the Max we seen so far the record
If groupsArray(n, 1) = group And groupsArray(n, lColumn - 1) > maxSoFar Then
maxSoFar = groupsArray(n, lColumn - 1)
End If
Next
'set function value
getMax = maxSoFar
End Function
Function inArrayValue(group As String, groupsSeen As Variant) As Double
'set function value
inArrayValue = 0
'if array is empty then exit
If IsEmpty(groupsSeen) Then Exit Function
'for each in array
For n = 0 To UBound(groupsSeen)
'if we find the group
If groupsSeen(n)(0) = group Then
'set function value to the Max value already seen
inArrayValue = groupsSeen(n)(1)
'exit function earlier
Exit Function
End If
Next
End Function
You can write a helper function to use instead of Application.Index
Bonus - it will be much faster than using Index (>5x)
Sub Tester()
Dim arr, arrCol
arr = Range("A2:J80000").Value
arrCol = GetColumn(arr, 5) '<< get the fifth column
Range("L2").Resize(UBound(arrCol, 1), 1).Value = arrCol
End Sub
'extract a single column from a 1-based 2-D array
Function GetColumn(arr, colNumber)
Dim arrRet, i As Long
ReDim arrRet(1 To UBound(arr, 1), 1 To 1)
For i = 1 To UBound(arr, 1)
arrRet(i, 1) = arr(i, colNumber)
Next i
GetColumn = arrRet
End Function
EDIT - since QHarr asked about timing here's a basic example
Sub Tester()
Dim arr, arrCol, t, i as long
arr = Range("A2:J80000").Value
t = Timer
For i = 1 to 100
arrCol = GetColumn(arr, 5) '<< get the fifth column
Next i
Debug.print Timer - t '<<# of seconds for execution
End Sub
Below, whilst not as tidy as could be, is a way to process an array in chunks and Index to access a column and write out to the sheet.
I populated two columns (A:B) with data. Both had 132,000 rows, populated incrementally, with values from 1 to 132,000 in each column for my test run.
You can fiddle with cutOff to get the chunk size just below the point where the fail happens.
The code below is simply to demonstrate the principle of looping in batches, upto the set cutoff in each batch, until all rows have been processed.
Option Explicit
Public Sub WriteArrayToSheet()
Dim wb As Workbook
Dim ws As Worksheet
Set wb = ThisWorkbook
Set sht = wb.Worksheets("Sheet1") 'change as appropriate
Dim myArr() 'dynamic array
myArr = sht.Range("A1").CurrentRegion.Value 'you may want a more robust method
Dim cutOff As Long 'the max value - what ever it is before error occurs
cutOff = 1000
Dim totalRows As Long 'total rows in array read in from sheet
totalRows = UBound(myArr, 1)
Dim totalArraysNeeded As Long
'Determine how many lots of cutOff chunks there are in the total number of array rows
totalArraysNeeded = Application.WorksheetFunction.Ceiling(totalRows / cutOff, 1)
Dim rotations As Long 'number of times to loop original array to handle all rows
Dim rowCountTotal As Long
Dim rowCount As Long
Dim tempArr() 'this will hold the chunk of the original array
Dim rowCounter As Long
Dim lastRow As Long
Dim nextRow As Long
Dim i As Long
Dim j As Long
Dim numRows As Long
rotations = 1
Do While rotations < totalArraysNeeded
If rotations < totalArraysNeeded - 1 Then
ReDim tempArr(1 To cutOff, 1 To UBound(myArr, 2)) 'size chunk array
numRows = cutOff
Else
numRows = totalRows - rowCountTotal
ReDim tempArr(1 To numRows, 1 To UBound(myArr, 2)) 'size chunk array
End If
For i = 1 To numRows
rowCount = 1 'rows in this chunk looped
rowCountTotal = rowCountTotal + 1 'rows in original array looped
For j = LBound(myArr, 2) To UBound(myArr, 2)
tempArr(i, j) = myArr(rowCountTotal, j)
Next j
rowCount = rowCount + 1
Next i
With sht
lastRow = .Cells(.Rows.Count, "E").End(xlUp).Row 'Column where I am writing the sliced column out to
End With
If lastRow = 1 Then
nextRow = 1
Else
nextRow = lastRow + 1
End If
sht.Range("E" & nextRow).Resize(UBound(tempArr, 1), 1) = Application.Index(tempArr, , 1) 'write out to sheet
rotations = rotations + 1
Loop
End Sub
As #Tim suggested, the best way to slice a large array is use a loop to copy the column.
Though in your case, most of the processing time is spent on computing the maximum since your code is using a nested loop.
If you want to reduce significantly the processing time, then use a dictionary:
Sub Usage
GetMaxByGroupTo _
sourceGroups := ThisWorkbook.Range("Sheet1!A2:A100"), _
sourceValues := ThisWorkbook.Range("Sheet1!B2:B100"), _
target := ThisWorkbook.Range("Sheet1!C2")
End Sub
Sub GetMaxByGroupTo(sourceGroups As Range, sourceValues As Range, target As Range)
Dim dict As Object, groups(), values(), r As Long, max
Set dict = CreateObject("Scripting.Dictionary")
groups = sourceGroups.Value2
values = sourceValues.Value2
' store the maximum value of each group in a dictionary for an efficient lookup '
For r = Lbound(groups) to Ubound(groups)
max = dict(groups(r, 1))
If VarType(max) And values(r, 1) <= max Then Else dict(groups(r, 1)) = values(r, 1)
Next
' build and copy the result array to the sheet '
For r = Lbound(groups) to Ubound(groups)
values(r, 1) = dict(groups(r, 1))
Next
target.Resize(Ubound(groups), 1).Value2 = values
End Sub

Remove rows from a 2d array if value in column is empty

I have a large table of lab measurement logs, which I work with using arrays.
(Im a chemist, a lab technician and Ive started to learn VBA only last week, please bear with me.)
Im trying to figure out, how to load the table into an array and then remove rows with an empty value in the 5th column so that I can "export" the table without blanks in the 5th column via an array into a different sheet.
I first tested this with some code I found for a 1D array, where I would make 2 arrays, one placeholder array which Id loop through adding only non-blanks to a second array.
For Counter = LBound(TestArr) To UBound(TestArr)
If TestArr(Counter, 1) <> "" Then
NoBlankSize = NoBlankSize + 1
NoBlanksArr(UBound(NoBlanksArr)) = TestArr(Counter, 1)
ReDim Preserve NoBlanksArr(0 To UBound(NoBlanksArr) + 1)
End If
Next Counter
It works in 1D, but I cant seem to get it two work with 2 dimensions.
Heres the array Im using for reading and outputting the data
Sub ArrayTest()
Application.ScreenUpdating = False
Application.Calculation = xlCalculationManual
Dim TestArray() As Variant
Dim Dimension1 As Long, Dimension2 As Long
Sheets("Tracker").Activate
Dimension1 = Range("A3", Range("A2").End(xlDown)).Cells.Count - 1
Dimension2 = Range("A2", Range("A2").End(xlToRight)).Cells.Count - 1
ReDim TestArray(0 To Dimension1, 0 To Dimension2)
'load into array
For Dimension1 = LBound(TestArray, 1) To UBound(TestArray, 1)
For Dimension2 = LBound(TestArray, 2) To UBound(TestArray, 2)
TestArray(Dimension1, Dimension2) = Range("A4").Offset(Dimension1, Dimension2).Value
Next Dimension2
Next Dimension1
Sheets("Output").Activate
ActiveSheet.Range("A2").Select
'read from array
For Dimension1 = LBound(TestArray, 1) To UBound(TestArray, 1)
For Dimension2 = LBound(TestArray, 2) To UBound(TestArray, 2)
ActiveCell.Offset(Dimension1, Dimension2).Value = TestArray(Dimension1, Dimension2)
Next Dimension2
Next Dimension1
Erase TestArray
Application.ScreenUpdating = True
Application.Calculation = xlCalculationAutomatic
End Sub
Thank you for any help in advance.
The Redim Preserve statement does not work for two-dimensional arrays if you want to change the number of records (rows).
You could load the range into an array, and then when you want to export the array to another range, loop through that array while skipping blank records.
An example:
Option Explicit
Sub ArrayTest()
Dim wb As Workbook, wsInput As Worksheet, wsOutput As Worksheet
Dim myArr As Variant
Dim i As Long, k As Long, LRow As Long
Set wb = ThisWorkbook
Set wsInput = wb.Sheets("Tracker")
Set wsOutput = wb.Sheets("Output")
LRow = wsOutput.Cells(wsOutput.Rows.Count, "A").End(xlUp).Row + 1
'Load a range into the array (example range)
myArr = wsInput.Range("A1:Z100")
'Fill another range with the array
For i = LBound(myArr) To UBound(myArr)
'Check if the first field of the current record is empty
If Not Len(myArr(i, 1)) = 0 Then
'Loop through the record and fill the row
For k = LBound(myArr, 2) To UBound(myArr, 2)
wsOutput.Cells(LRow, k) = myArr(i, k)
Next k
LRow = LRow + 1
End If
Next i
End Sub
From your code, it appears you want to
test a column of data on a worksheet to see if there are blanks.
if there are blanks in the particular column, exclude that row
copy the data with the excluded rows to a new area
You can probably do that easier (and quicker) with a filter: code below checking for blanks in column2
Option Explicit
Sub removeCol2BlankRows()
Dim wsSrc As Worksheet, wsRes As Worksheet
Dim rSrc As Range, rRes As Range
Set wsSrc = ThisWorkbook.Worksheets("sheet1")
Set rSrc = wsSrc.Cells(1, 1).CurrentRegion 'many ways to do this
Set wsRes = ThisWorkbook.Worksheets("sheet1")
Set rRes = wsRes.Cells(1, 10)
If wsSrc.AutoFilterMode = True Then wsSrc.AutoFilterMode = False
rSrc.AutoFilter field:=2, Criteria1:="<>"
rSrc.SpecialCells(xlCellTypeVisible).Copy rRes
wsRes.AutoFilterMode = False
End Sub
If you really just want to filter the VBA arrays in code, I'd store the non-blank rows in a dictionary, and then write it back to the new array:
Option Explicit
Sub removeCol2BlankRows()
Dim testArr As Variant
Dim noBlanksArr As Variant
Dim myDict As Object
Dim I As Long, J As Long, V
Dim rwData(1 To 4) As Variant
With ThisWorkbook.Worksheets("sheet1")
testArr = .Range(.Cells(1, 1), .Cells(.Rows.Count, 1).End(xlUp)).Resize(columnsize:=4)
End With
Set myDict = CreateObject("Scripting.Dictionary")
For I = 1 To UBound(testArr, 1)
If testArr(I, 2) <> "" Then
For J = 1 To UBound(testArr, 2)
rwData(J) = testArr(I, J)
Next J
myDict.Add Key:=I, Item:=rwData
End If
Next I
ReDim noBlanksArr(1 To myDict.Count, 1 To 4)
I = 0
For Each V In myDict.keys
I = I + 1
For J = 1 To 4
noBlanksArr(I, J) = myDict(V)(J)
Next J
Next V
End Sub

Type Mismatch using LOOP/IFERROR/INDEX/MATCH

What I am trying to do is looping through all rows and columns to find the quantity of a part inside a machine. This is searched for based on the article number and the Equipment/machine type. As in this screenshot:
My problem is that the way I have it running now is VERY slow. In the screenshot above is only a small portion of the cells. They go down to +-500 equalling roughly 22500 times the formula:
=ifERROR(INDEX(Datasheet!$B$1:$E$100;MATCH(1;(Datasheet!$D:$D=C$1)*(Datasheet!$B:$B=$AY15);0);4);"")
I want to speed it up using VBA by just giving my static values in all cells.
I have a large part done which I will display below.
The search values (datasheet)
I have it almost complete (I can feel it!) but it keeps returning me the type 13 Type mismatch error. I have found MANY MANY threads on stack overflow and the internet but these fixes do not fix it for myself.
My code:
'set all sheets
'----------------------------------------
Dim Isht As Worksheet
Dim Esht As Worksheet
Dim Dsht As Worksheet
Dim Gsht As Worksheet
Set Isht = ThisWorkbook.Worksheets("Instructionsheet")
Set Esht = ThisWorkbook.Worksheets("Exportsheet")
Set Dsht = ThisWorkbook.Worksheets("Datasheet")
Set Gsht = ThisWorkbook.Worksheets("Gathersheet")
'----------------------------------------
Dim EshtLR As Long
Dim EshtLC As Long
Dim DshtLC As Long
Dim DshtLR As Long
Dim OutputRange As Range
Dim SearchRange As Range
Dim MachineMatchCOL As Range
Dim ArticleMatchCOL As Range
Dim MachineType As String
Dim ArticleNumber As String
Dim StartRow As Long
Dim StartCol As Long
StartCol = Dsht.Range("P10").Value
StartRow = Dsht.Range("P11").Value
'Determine Last column in export sheet.
EshtLC = Esht.Cells(14, Columns.count).End(xlToLeft).Column
'Determine Last row in data sheet.
DshtLR = Dsht.Cells(Rows.count, 1).End(xlUp).Row
'Determine Last row in export sheet.
EshtLR = Esht.Cells(Rows.count, 1).End(xlUp).Row
Set OutputRange = Esht.Range(Esht.Cells(StartRow, 3), Esht.Cells(EshtLR, EshtLC - 9))
Set SearchRange = Dsht.Range(Dsht.Cells(1, 2), Dsht.Cells(DshtLR, 5))
Set MachineMatchCOL = Dsht.Range(Dsht.Cells(1, 4), Dsht.Cells(DshtLR, 4))
Set ArticleMatchCOL = Dsht.Range(Dsht.Cells(1, 2), Dsht.Cells(DshtLR, 2))
'=IFERROR(INDEX(Datasheet!$B$1:$E$100;Match(1;(Datasheet!$D:$D=C$1)*(Datasheet!$B:$B=$AY15);0);4);"")
'Datasheet!$B$1:$E$100 = SearchRange
'Datasheet!$D:$D = MachineMatchCOL
'Datasheet!$B:$B = ArticleMatchCOL
'C$1 = MatchineType
'$AY15 = ArticleNumber
j = StartRow
i = StartCol
For Each Row In OutputRange
For Each Column In OutputRange
MachineType = Esht.Range(Esht.Cells(1, i), Esht.Cells(1, i)).Value
ArticleNumber = Esht.Range(Cells(j, EshtLC - 5), Cells(j, EshtLC - 5)).Value
Esht.Cells(j, i).Value = Application.WorksheetFunction _
.IfError(Application.WorksheetFunction _
.Index(SearchRange, Application.WorksheetFunction _
.Match(1, (MachineMatchCOL = MachineType) * (ArticleMatchCOL = ArticleNumber), 0), 4), "")
i = i + 1
Next Column
j = j + 1
Next Row
It has something to do with the fact that a range cannot equal a value but I have tried for a long time and cannot figure it out.
Also note that the loop probably does not work but that is for a next problem to deal with :-).
I do not expect you to fully create everything but, again, a friendly push is also greatly appreciated.
UPDATE: The line that arises error is:
Esht.Cells(j, i).Value = Application.WorksheetFunction _
.IfError(Application.WorksheetFunction _
.Index(SearchRange, Application.WorksheetFunction _
.Match(1, (MachineMatchCOL = MachineType) * (ArticleMatchCOL = ArticleNumber), 0), 4), "")
Build a dictionary of the Datasheet values using columns B & D joined as the key and column E as the item. This will provide virtually instantaneous 'two-column' lookup for the C15:AU29 table on the Exportsheet worksheet.
Option Explicit
Sub PopulateQIMs()
Dim i As Long, j As Long, ds As Object
Dim arr As Variant, typ As Variant, art As Variant, k As Variant
Set ds = CreateObject("scripting.dictionary")
'populate a dictionary
With Worksheets("datasheet")
'collect values from ws into array
arr = .Range(.Cells(3, "B"), .Cells(.Rows.Count, "E").End(xlUp)).Value2
'cycle through array and build dictionary
For i = LBound(arr, 1) To UBound(arr, 1)
'shorthand overwrite method of creating dictionary entries
'key as join(column B & column D), item as column E
ds.Item(Join(Array(arr(i, 1), arr(i, 3)), Chr(0))) = arr(i, 4)
Next i
End With
With Worksheets("exportsheet")
'collect exportsheet 'Type' into array
'typ = .Range(.Cells(1, "C"), .Cells(1, "AU")).Value2
typ = .Range(.Cells(1, "C"), .Cells(1, "C").End(xlToRight)).Value2
'collect exportsheet 'Article Number' into array
'art = .Range(.Cells(15, "AY"), .Cells(29, "AY")).Value2
art = .Range(.Cells(15, "AY"), .Cells(15, "AY").End(xlDown)).Value2
'create array to hold C15:AU29 values
'ReDim arr(1 To 15, 1 To 45)
ReDim arr(LBound(art, 1) To UBound(art, 1), _
LBound(typ, 2) To UBound(typ, 2))
'cycle through Type and Article Numbers and populate array from dictionary
For i = LBound(arr, 1) To UBound(arr, 1)
For j = LBound(arr, 2) To UBound(arr, 2)
'build a key for lookup
k = Join(Array(art(i, 1), typ(1, j)), Chr(0))
'is it found ...?
If ds.exists(k) Then
'put 'Quantity In Machine' into array
arr(i, j) = ds.Item(k)
End If
Next j
Next i
'put array values into Exportsheet
.Cells(15, "C").Resize(UBound(arr, 1), UBound(arr, 2)) = arr
End With
End Sub
Not sure this exactly meets your needs, nor being the most elegant solution - and running out of time to make this more nicer...
It might not work for you straight out of the box, but i hope it gives you an idea on how to better aproach this.
Sub test()
'set all sheets
'----------------------------------------
Dim Isht As Worksheet
Dim Esht As Worksheet
Dim Dsht As Worksheet
Dim Gsht As Worksheet
Set Isht = ThisWorkbook.Worksheets("Instructionsheet")
Set Esht = ThisWorkbook.Worksheets("Exportsheet")
Set Dsht = ThisWorkbook.Worksheets("Datasheet")
Set Gsht = ThisWorkbook.Worksheets("Gathersheet")
'----------------------------------------
Dim EshtLR As Long
Dim EshtLC As Long
Dim DshtLC As Long
Dim DshtLR As Long
Dim OutputRange As Range
Dim SearchRange As Range
Dim MachineMatchCOL As Range
Dim ArticleMatchCOL As Range
Dim MachineType As String
Dim ArticleNumber As String
Dim StartRow As Long
Dim StartCol As Long
StartCol = Dsht.Range("P10").Value
StartRow = Dsht.Range("P11").Value
'Determine Last column in export sheet.
EshtLC = Esht.Cells(14, Columns.Count).End(xlToLeft).Column
'Determine Last row in data sheet.
DshtLR = Dsht.Cells(Rows.Count, 1).End(xlUp).row
'Determine Last row in export sheet.
EshtLR = Esht.Cells(Rows.Count, 1).End(xlUp).row
'Declare and allocate your ranges to arrays
Dim arrOutput As Variant, arrSearch As Variant
arrOutput = Esht.Range(Esht.Cells(1, 3), Esht.Cells(EshtLR, EshtLC)) 'Not sure what last column is here, but i will make a presumption below that "Article number" is last
arrSearch = Dsht.Range(Dsht.Cells(1, 2), Dsht.Cells(DshtLR, 5))
Dim R As Long, C As Long, X As Long
For R = LBound(arrOutput) To UBound(arrOutput)
For C = LBound(arrOutput, 2) To UBound(arrOutput, 2)
For X = LBound(arrSearch) To UBound(arrSearch)
'If the article number has a match in the search
If arrOutput(R, UBound(arrOutput)) = arrSearch(X, 1) Then 'replace UBound(arrOutput) with the "Article number" column number
'Let's check if the machine number is there as well
If arrOutput(1, C) = arrSearch(X, 3) Then
'both found at the same row, return the value from that row
arrOutput(R, C) = arrSearch(X, 4)
End If
End If
Next X
Next C
Next R
End Sub
PS: You still need to write the values back to the sheet from the array, which you can either do directly range = array or through a loop, depending on your needs.
I`ll try to complete the answer later when i get more time (at work!).

Faster code for cuting 'good row range' from sh2 to sh1?

Does it exist any way to make this code run faster as it goes one row by one row ?
Sub cut_good_row_range_from_sh2_to_sh1()
Application.ScreenUpdating = False
For i = 2 To Sheets("sheet1").Cells(Rows.Count, "A").End(xlUp).Row
For j = 2 To Sheets("sheet2").Cells(Rows.Count, "A").End(xlUp).Row
'Caution: I want to cut BB:BD, so I select BA:BD !
If Sheets("sheet1").Range("A" & i).Value = Sheets("sheet2").Range("A" & j).Value Then
Sheets("sheet2").Range("BA" & j & ":BS" & j).Cut Sheets("sheet1").Range("BA" & i & ":BS" & i)
End If
Next j
Next i
Application.ScreenUpdating = True
End Sub
Thanks ;)
It has been demonstrated on SO many times that looping over ranges is slow, and looping over variant arrays is much faster.
The 'best' method depends on the specifics of the use case. Making as few assumptions as I can, this demo shows how effective it can be. The assumptions made are
Data only is required, Format is not transfered.
No Formulas exist in the Destination range (If they do, they will be overwritten with their current value)
This is a simplistic example, further optimisations can be made.
Sub Demo()
Dim Found As Boolean
Dim i As Long, j As Long, k As Long
Dim rSrcA As Range, rSrc As Range
Dim vSrcA As Variant, vSrc As Variant
Dim rDstA As Range, rDst As Range
Dim vDstA As Variant, vDst As Variant
Dim rClear As Range
' Get references to Source Data Range and Variant Array
With Worksheets("Sheet2")
Set rSrcA = Range(.Cells(1, 1), .Cells(.Rows.Count, 1).End(xlUp))
vSrcA = rSrcA.Value
Set rSrc = .Range("BA1:BS1").Resize(UBound(vSrcA, 1))
vSrc = rSrc
End With
' Get references to Destination Data Range and Variant Array
With Worksheets("Sheet1")
Set rDstA = Range(.Cells(1, 1), .Cells(.Rows.Count, 1).End(xlUp))
vDstA = rDstA.Value
Set rDst = .Range("BA1:BS1").Resize(UBound(vDstA, 1))
vDst = rDst
End With
' Loop Source
For i = 1 To UBound(vSrcA, 1)
' Loop Destination
For j = 1 To UBound(vDstA, 1)
' Compare
If vSrcA(i, 1) = vDstA(j, 1) Then
Found = True
' Update Destination Data Array, to be copied back to sheet later
For k = 1 To UBound(vSrc, 2)
vDst(j, k) = vSrc(i, k)
Next
End If
Next
' If match found, track Source range to clear later
If Found Then
If rClear Is Nothing Then
Set rClear = rSrc.Rows(i)
Else
Set rClear = Union(rClear, rSrc.Rows(i))
End If
Found = False
End If
Next
' Update Destination Range
rDst.Value = vDst
' Clear Source Range
rClear.ClearContents
End Sub
When run on a test data set of 15 source rows and 200 destination rows, this reduced execution time from about 17s to about 10ms

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