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Euclidean Distance Matrix

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    Euclidean Distance Matrix

    I am creating a 100X100 matrix with Euclidean Distance from the master attributes sheet (See attached workbook). The matrix will be created on the Euclidean Distance sheet. The formula that I am using is as follows:
    = ((risk of item 1 - risk of item 2)^2 + (cost of item 1 - cost of item 2)^2 + (performance of item 1 - performance of item 2)^2)^(1/2)
    I need to compare every item like this and put the result in the corresponding cell of the Euclidean Distance sheet. How could I do this without having manually enter the equation for every item?
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    Re: Euclidean Distance Matrix

    Is Item 1 in Column A and Item 2 in Row 1 or visa versa?
    Assuming the first then
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    This equation (in B2) can be dragged across and down. However, you will get a number error when performance of 1<performance of 2 (SQ Root of neg number) Is this what you are looking for?
    Last edited by ChemistB; 01-27-2010 at 03:21 PM.
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    Re: Euclidean Distance Matrix

    I think that might work.

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    Re: Euclidean Distance Matrix

    Quote Originally Posted by jdmay View Post
    I think that might work.
    That is what I was looking for but is there a way to fix the problem with the negative numbers?

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    Re: Euclidean Distance Matrix

    Yes, put an IF statement around the formula checking to see if you get the Sq root of a negative number like so
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    Replace "NA" with whatever you desire in those cells, 0, -, "" (blank). Does that work for you?

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    Re: Euclidean Distance Matrix

    How can you end up with a negative number in a distance formula?
    Entia non sunt multiplicanda sine necessitate

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    Post Re: Euclidean Distance Matrix

    The negative values in the distance can be solved by taking the absolute value each value =ABS()

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