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Another relationship of variables

  1. Jul 31, 2005 #1
    Yet again, im programming a software to align pictures on a 2D plane, kinda like they are in windows exploror. I need to find a relationship betwen these.

    I C R
    _______
    1 1 1
    2 1 2
    3 1 3
    4 1 4
    5 1 5
    6 1 1
    7 2 2
    8 2 3
    9 2 4
    10 2 5
    11 3 1

    I would be my for loop counter, C would be the colum of picture I, and R would be what row it belongs to.

    I already know that
    C = Ceil(i / 5);
    And I have come close to finding the value of R, so far I have
    R = i - (Floor(i/(5 + C))*5);
    But I know the latter equation is wrong, I just cant seem to figure it out out.

    Thanks in advanve :smile:
     
  2. jcsd
  3. Jul 31, 2005 #2

    VietDao29

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    Homework Helper

    Are you sure 6 1 1??? I think it should read 6 2 1.
    C = [(I - 1) / 5] + 1. Where [...] is a function that takes the integer part before the decimal point of a real number. Ex : [1.5] = 1.
    In some programming languages, you can write it as : C = Int((I - 1) / 5) + 1.
    R = I - (C - 1) * 5.
    Viet Dao,
     
    Last edited: Jul 31, 2005
  4. Jul 31, 2005 #3
    Oh my :surprised It was soooo simple! I am speechless. Of course, just subtract from I, 5 C abount of times (and add one of course).

    Thank you very much.
     
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