Add ranges to array

H

henrik2h

Board Regular
Joined
Aug 25, 2008
Messages
155
Office Version
  1. 2021
Platform
  1. Windows
Hi, been a while since last time...
Right now I have a large amount of calculations that produce a range (results) of outcome on the spreadsheet (calc). A single input change all the outcome. I have a macro that loop through all the input (1...1000), copy results and then transpose and paste that range onto another sheet (pivotdata). It then takes the next input and place the new results below the existing data on pivotdata.

Question
The macro is fairly slow, would I benefit from storing all the results-ranges one by one "below" each other into an array instead and then paste the entire array onto pivotdata? How would I go about to do that?

Best regards
Henrik
 

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I think it is possible to improve performance using arrays, but your question is a bit vague.
An example would be useful - a small sample of data along with the expected results.

M.
 
Upvote 0
Something like this (macro loop through input one by one)

Code: 
[TABLE="width: 522"]
<tbody>[TR]
[TD="colspan: 2"]Sheet "Calc"[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD]Results[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD]Input[/TD]
[TD="align: right"]1[/TD]
[TD][/TD]
[TD][/TD]
[TD="align: right"]1[/TD]
[TD="align: right"]1[/TD]
[TD="align: right"]1[/TD]
[TD="align: right"]1[/TD]
[TD="align: right"]1[/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD="align: right"]1[/TD]
[TD="align: right"]1[/TD]
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[/TR]
[TR]
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[TR]
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[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD="colspan: 2"]Sheet "Pivotdata"[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
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[TD="align: right"]2[/TD]
[TD="align: right"]2[/TD]
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[TD="align: right"]3[/TD]
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[TD="align: right"]3[/TD]
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[TD][/TD]
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[TD="align: right"]3[/TD]
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[TD="align: right"]3[/TD]
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</tbody>[/TABLE]
 
Upvote 0
Assuming data like this

Sheet Calc


[TABLE="class: grid"]
<tbody>[TR]
[TD="bgcolor: #DCE6F1"][/TD]
[TD="bgcolor: #DCE6F1"]
A​
[/TD]
[TD="bgcolor: #DCE6F1"]
B​
[/TD]
[TD="bgcolor: #DCE6F1"]
C​
[/TD]
[TD="bgcolor: #DCE6F1"]
D​
[/TD]
[TD="bgcolor: #DCE6F1"]
E​
[/TD]
[TD="bgcolor: #DCE6F1"]
F​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
1​
[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD]
Results​
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
2​
[/TD]
[TD]
Input​
[/TD]
[TD]
1​
[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
3​
[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
4​
[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
</tbody>[/TABLE]


Sheet PivotData

[TABLE="class: grid"]
<tbody>[TR]
[TD="bgcolor: #DCE6F1"][/TD]
[TD="bgcolor: #DCE6F1"]
A​
[/TD]
[TD="bgcolor: #DCE6F1"]
B​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
1​
[/TD]
[TD]
Header1​
[/TD]
[TD]
Header2​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
2​
[/TD]
[TD]
1​
[/TD]
[TD]
1​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
3​
[/TD]
[TD]
1​
[/TD]
[TD]
1​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
4​
[/TD]
[TD]
1​
[/TD]
[TD]
1​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
5​
[/TD]
[TD]
1​
[/TD]
[TD]
1​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
6​
[/TD]
[TD]
1​
[/TD]
[TD]
1​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
7​
[/TD]
[TD]
2​
[/TD]
[TD]
2​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
8​
[/TD]
[TD]
2​
[/TD]
[TD]
2​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
9​
[/TD]
[TD]
2​
[/TD]
[TD]
2​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
10​
[/TD]
[TD]
2​
[/TD]
[TD]
2​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
11​
[/TD]
[TD]
2​
[/TD]
[TD]
2​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
12​
[/TD]
[TD]
3​
[/TD]
[TD]
3​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
13​
[/TD]
[TD]
3​
[/TD]
[TD]
3​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
14​
[/TD]
[TD]
3​
[/TD]
[TD]
3​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
15​
[/TD]
[TD]
3​
[/TD]
[TD]
3​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
16​
[/TD]
[TD]
3​
[/TD]
[TD]
3​
[/TD]
[/TR]
[TR]
[TD="bgcolor: #DCE6F1"]
17​
[/TD]
[TD][/TD]
[TD][/TD]
[/TR]
</tbody>[/TABLE]


Maybe this macro
Code: 
Sub aTest()
    Dim arr() As Variant, rData As Range, vData As Variant
    Dim i As Long, j As Long, LastRow As Long
    Dim NumElem As Long, vCrit As Variant
    
    With Sheets("Calc")
        vCrit = .Range("B2").Value
        LastRow = .Cells(.Rows.Count, "E").End(xlUp).Row
    End With
    
    With Sheets("PivotData")
        Set rData = .Range("A2:B" & .Cells(.Rows.Count, "A").End(xlUp).Row)
        NumElem = Application.CountIf(rData.Columns(1), vCrit)
    End With
    ReDim arr(1 To 2, 1 To NumElem)
    
    vData = rData
    For i = LBound(vData, 1) To UBound(vData, 1)
        If vData(i, 1) = vCrit Then
            j = j + 1
            arr(1, j) = vData(i, 1)
            arr(2, j) = vData(i, 2)
        End If
    Next i
    
    Sheets("Calc").Range("E" & LastRow + 1).Resize(2, NumElem) = arr
End Sub

M.
 
Upvote 0
Thank you, I will look into it in more detail and see if it improves performance.

Have a nice weekend!
 
Upvote 0
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