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Thread: Extracting columns from multidimensional arrays

  1. Dec 3rd, 2011, 05:03 PM #1
    Fonty
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    Question Extracting columns from multidimensional arrays

    If I have a two-dimensional array and it has assigned the values of a two-dimensional range, is there any way I do something to a whole row of column, whithout using a loop?

    For example

    Dim myArray(), myVector()
    ReDim myArray(1 To 100, 1 To 3)
    ReDim myVector(1 To 100)

    ' Copy column 2
    For i=1 To 100
    myVector(i)=myArray(i,2)
    Next i

    Why can't I just do something like
    myVector(1 To 100)=myArray(1 To 100,2)

    Thanks!
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  2. Dec 4th, 2011, 03:23 AM #2
    westconn1
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    Re: Extracting columns from multidimensional arrays

    i would believe you can do like that using the copymemory API

    i remember a thread that showed how to transpose a 2d array using copy memory, but it is not something i am familiar using, so you might have to do some searching
    i do my best to test code works before i post it, but sometimes am unable to do so for some reason, and usually say so if this is the case.
    Note code snippets posted are just that and do not include error handling that is required in real world applications, but avoid On Error Resume Next

    dim all variables as required as often i have done so elsewhere in my code but only posted the relevant part

    come back and mark your original post as resolved if your problem is fixed
    pete
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