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selecting specific cells from a matrix

  1. #1
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    selecting specific cells from a matrix

    I am working on a large matrix. It is lower-triangular, meaning that the diagonal entries are 0s, and everything above the diagonal is blank. Each cell below the diagonal has a particular value (numeric).
    I want to pick a series of entries, e.g., (row #10, column # 20), (row#25, col#55), (row#105, col#50), and so on ... and save them as a new column.
    Right now I am doing this manually. Is there a better and more efficient way to accomplish this?
    Thanks.

  2. #2
    Forum Guru DonkeyOte's Avatar
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    Re: selecting specific cells from a matrix

    Possibly but...

    To best describe or illustrate your problem you would be better off attaching a dummy workbook, the workbook should contain the same structure and some dummy data of the same type as the type you have in your real workbook - so, if a cell contains numbers & letters in this format abc-123 then that should be reflected in the dummy workbook.

    If needed supply a before and after sheet in the workbook so the person helping you can see what you are trying to achieve.

  3. #3
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    Re: selecting specific cells from a matrix

    Hi,
    I figured that I could post an attachment here.
    The sample file has a matrix.
    The cells I am looking to select are colored in red. Their "address" (i.e., row # and column #) are also listed.
    Attached Files Attached Files

  4. #4
    Forum Guru shg's Avatar
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    Re: selecting specific cells from a matrix

    In D20 and copy down, =INDEX($B$2:$P$16, B20, C20)
    Entia non sunt multiplicanda sine necessitate

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