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ask about a function

  1. #1
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    ask about a function

    I have 2 sets of values (2 columns [column A & B] of values having different mechanical definitions), they need to meet 2 sets of specific criteria. for example, cells A2 and B2 need to meet 2 different mechanical criteria, if they both could meet one or more of the conditions, they could be considered in the next step......
    and so do other cells in the same row(Ai and Bi....or Aj and Bj)

    A little more detail about how to judge if the conditions are met or not......let the values in column A and B subtract the conditions....if they are not negative they are possible(for any values in column A and B,they will get at least 1 positive condition)

    I am thinking to convert the result from 'negative or positive' to '0 or 1' (or 'false or true'). Certainly, they are in array (matrix form). Multiply 2 sets.......only outcomes are 1 will be pick up for further operations....

    So here comes to the question, which function could do what i describe...... I know I can do it by if-condition function......somehow I think there must some function(s) could make it easier....they are too many miseries in EXCEL. I have not dig all them out....

    Please help me to dig deeply....


    Thanks.

  2. #2
    Forum Contributor EdMac's Avatar
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    Can you post an example of your worksheet - it's difficult to visualise your situation.
    Ed
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  3. #3
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    thanks for your quick response

    for example...
    Col. A Col. B
    12.34 0.886
    12.34 0.886
    12.34 0.886
    12.34 0.886
    12.23 0.732
    12.23 0.732
    11.46 0.732
    16.04 0.931
    16.04 0.931
    16.04 0.931
    Conditions:
    Set 1. 11.6 14.3 14.6 16.7 17.9 18.3 20.7
    Set 2. 0.76 1.17 0.75 1.01 0.9 1.2 1.19

    Substract Set 1 and column A ....then differences are

    -0.74 1.96 2.26 4.36 5.56 5.96 8.36
    -0.74 1.96 2.26 4.36 5.56 5.96 8.36
    -0.74 1.96 2.26 4.36 5.56 5.96 8.36
    -0.74 1.96 2.26 4.36 5.56 5.96 8.36
    -0.63 2.07 2.37 4.47 5.67 6.07 8.47
    -0.63 2.07 2.37 4.47 5.67 6.07 8.47
    0.14 2.84 3.14 5.24 6.44 6.84 9.24
    -4.44 -1.74 -1.44 0.66 1.86 2.26 4.66
    -4.44 -1.74 -1.44 0.66 1.86 2.26 4.66
    -4.44 -1.74 -1.44 0.66 1.86 2.26 4.66

    Also, substract set 2 and column B...outcomes are as follow

    -0.13 0.28 -0.14 0.12 0.01 0.31 0.30
    -0.13 0.28 -0.14 0.12 0.01 0.31 0.30
    -0.13 0.28 -0.14 0.12 0.01 0.31 0.30
    -0.13 0.28 -0.14 0.12 0.01 0.31 0.30
    0.03 0.44 0.02 0.28 0.17 0.47 0.46
    0.03 0.44 0.02 0.28 0.17 0.47 0.46
    0.03 0.44 0.02 0.28 0.17 0.47 0.46
    -0.17 0.24 -0.18 0.08 -0.03 0.27 0.26
    -0.17 0.24 -0.18 0.08 -0.03 0.27 0.26
    -0.17 0.24 -0.18 0.08 -0.03 0.27 0.26


    the negative value means values in column A or B could not meet this condition..while the positive one means they could meet it....

    I am thinking to convert the differences (set 1 and col A||set 2 and col B) from negative and positive to 0 and 1 or false and true. something like a binary function...then multiply them....the results are containing 0 and 1 or false and true. only both 1 or both true could be selected for further uses...

    I hope this time it is clear....

    Thanks in advance

  4. #4
    Forum Contributor EdMac's Avatar
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    How large are your data sets?

    Do you have a spread sheet already set up with values entered - without seeing how your data is presented it is difficult to advise - can you post an actual copy of your sheet?

  5. #5
    Forum Contributor EdMac's Avatar
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    Cross posted!

    http://www.ozgrid.com/forum/showthread.php?t=95575

    Please make reference to cross posts in other forums to prevent wasted time and effort.

  6. #6
    Valued Forum Contributor mudraker's Avatar
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    zhouhenry

    Please take a couple of minutes and read the Forum Rules Rule 1 & Rule 8

    Closing Thread

    EdMac
    Thanks for pointing out the cross posting
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