How to Sequentially Apply Array Formulas in Excel Using Microsoft 365 to Get a 2D Table

To apply array formulas sequentially in Microsoft Excel and output the result in a 2D table using Regex Capture, follow these steps:

1. First, ensure that the data you want to work with is properly formatted in Excel. For example:

A1: Data1, Data2, Data3, Data4
A2: Data5, Data6, Data7, Data8
A3: Data9, Data10, Data11, Data12

2. Suppose you want to extract the second and third columns of the table into a new 2D array. To do this, you can use the following formula:

=INDEX(A1:A3, ROW(A1):ROW(A3), 2) & CHAR(10) & INDEX(A1:A3, ROW(A1):ROW(A3), 3)

This formula will concatenate the second and third columns with a line break (CHAR(10)) in between.

3. To apply this formula sequentially to multiple ranges, you can use a helper column with a formula like this:

=IF(ISBLANK(A1), "", INDEX(A1:A3, ROW(A1):ROW(A3), 2) & CHAR(10) & INDEX(A1:A3, ROW(A1):ROW(A3), 3))

Copy this formula down the helper column, and you'll get a concatenated result for each row.

4. Now, to extract the data using Regex Capture, you can use a tool like "Text to Columns" in Excel. Select the helper column, go to "Data" tab, and click on "Text to Columns." In the dialog box, choose "Delimited" and then "Tab" as the delimiter. Click "Finish" to get the extracted data in separate columns.

5. To convert the extracted data into a 2D array, you can use the following VBA code:

Sub ArrayFromText()
    Dim rng As Range
    Dim i As Long, j As Long
    Dim arr() As Variant

    Set rng = Selection

    ReDim arr(1 To rng.Rows.Count, 1 To 2)

    For i = 1 To rng.Rows.Count
        arr(i, 1) = rng.Cells(i, 1).Value
        arr(i, 2) = rng.Cells(i, 2).Value
    Next i

    For i = 1 To rng.Rows.Count
        For j = 1 To 2
            Cells(i + rng.Row - 1, j + rng.Column - 1) = arr(i, j)
        Next j
    Next i
End Sub

6. Press ALT + F11 to open the VBA editor, insert a new module, and paste the code above. Then run the ArrayFromText subroutine to convert the extracted data into a 2D array.

References:

• Microsoft Excel documentation: https://docs.microsoft.com/en-us/office/troubleshoot/excel/excel-array-formulas
• VBA documentation: https://docs.microsoft.com/en-us/office/vba/language/reference/user-interface-help/vba-language-reference-visual-basic-for-applications

This answer provides a general approach to your question. Depending on your specific use case, you might need to adjust the formulas and code snippets provided.