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How to evaluate a string as a formula?

  1. #1
    zhaoning.zju@gmail.com
    Guest

    How to evaluate a string as a formula?

    Hi all,
    I am going to write a string formula (without "=") in a cell, e.g.
    (A1+B1)/2 in C1. And I want the cell C2 to display the value of the
    formula in C1.
    To be concrete, let's take an example as follows:
    In a sheet, I write:
    110 in A1,
    90 in A2,
    (A1+A2)/2 in C1.
    What formula shall I write in cell C2 to get a value of 100, and get a
    value of 50 when C1 is changed to (A1+A2)/4?
    Thanks!


  2. #2
    Raman
    Guest

    Re: How to evaluate a string as a formula?

    Be more specific
    You could enter the same formula
    It is not possible in excel to write a function without =
    You could use the tools-options-transition-transition formula entry
    option to use excel as a virtual calculator


  3. #3
    Ron Rosenfeld
    Guest

    Re: How to evaluate a string as a formula?

    On 14 Mar 2006 18:44:12 -0800, "zhaoning.zju@gmail.com"
    <zhaoning.zju@gmail.com> wrote:

    >Hi all,
    >I am going to write a string formula (without "=") in a cell, e.g.
    >(A1+B1)/2 in C1. And I want the cell C2 to display the value of the
    >formula in C1.
    >To be concrete, let's take an example as follows:
    >In a sheet, I write:
    >110 in A1,
    >90 in A2,
    >(A1+A2)/2 in C1.
    >What formula shall I write in cell C2 to get a value of 100, and get a
    >value of 50 when C1 is changed to (A1+A2)/4?
    >Thanks!


    You will need to use VBA in order to do this.

    <alt-F11> opens the VB Editor.

    Ensure your project is highlighted in the project explorer window, then select
    Insert/Module from the top menu and enter the code below into the window that
    opens.

    Then, in C2, enter the formula: =Eval(C1)

    =====================
    Function Eval(rg As Range)
    Application.Volatile
    Eval = Evaluate(rg.Text)
    End Function
    ======================



    --ron

  4. #4
    bplumhoff@gmail.com
    Guest

    Re: How to evaluate a string as a formula?

    Hello,

    you might want to use the VBA function EVAL() shown at
    http://www.decisionmodels.com/calcsecretsh.htm

    Another approach is shown at
    http://www.sulprobil.com/html/it_quality.html

    HTH,
    Bernd


  5. #5
    Findeo
    Guest

    RE: How to evaluate a string as a formula?

    With the cursor in C2, for example, Insert-Define-Name: "Formul" (or what u
    want),
    and , in "Refers to" introduce =EVALUATE(C1), and Accept.

    Once in the sheet again in C2 put
    =Formul (the name previoiusly defined) and u can modify the formula in C1
    that you obtain the result in C2.

    Hope this helps
    --
    FindeO


    "zhaoning.zju@gmail.com" escribió:

    > Hi all,
    > I am going to write a string formula (without "=") in a cell, e.g.
    > (A1+B1)/2 in C1. And I want the cell C2 to display the value of the
    > formula in C1.
    > To be concrete, let's take an example as follows:
    > In a sheet, I write:
    > 110 in A1,
    > 90 in A2,
    > (A1+A2)/2 in C1.
    > What formula shall I write in cell C2 to get a value of 100, and get a
    > value of 50 when C1 is changed to (A1+A2)/4?
    > Thanks!
    >
    >


  6. #6
    zhaoning.zju@gmail.com
    Guest

    Re: How to evaluate a string as a formula?

    Thanks, I think the method you provided is exactly what I want. But
    when I did it that way, it showed me a "#NAME?" in C2. What's the
    problem?


  7. #7
    Peo Sjoblom
    Guest

    Re: How to evaluate a string as a formula?

    Did you do this part?

    "You will need to use VBA in order to do this.

    <alt-F11> opens the VB Editor.

    Ensure your project is highlighted in the project explorer window, then
    select
    Insert/Module from the top menu and enter the code below into the window
    that
    opens."

    --

    Regards,

    Peo Sjoblom

    Northwest Excel Solutions

    www.nwexcelsolutions.com

    (remove ^^ from email address)

    Portland, Oregon




    <zhaoning.zju@gmail.com> wrote in message
    news:1142825020.680100.65920@t31g2000cwb.googlegroups.com...
    > Thanks, I think the method you provided is exactly what I want. But
    > when I did it that way, it showed me a "#NAME?" in C2. What's the
    > problem?
    >



  8. #8
    Ron Rosenfeld
    Guest

    Re: How to evaluate a string as a formula?

    On 19 Mar 2006 19:23:40 -0800, "zhaoning.zju@gmail.com"
    <zhaoning.zju@gmail.com> wrote:

    >Thanks, I think the method you provided is exactly what I want. But
    >when I did it that way, it showed me a "#NAME?" in C2. What's the
    >problem?


    Post back, by copying exactly (Edit/Copy) exactly what you entered into the VB
    Editor and exactly what you entered as a formula.


    --ron

  9. #9
    zhaoning.zju@gmail.com
    Guest

    Re: How to evaluate a string as a formula?

    In VBA module, I wrote(actually copied your code):
    Function Eval(rg As Range)
    Application.Volatile
    Eval = Evaluate(rg.Text)
    End Function

    In the worksheet, cell C1, I wrote:
    (A1+A2)/2

    In cell C2, I wrote:
    =eval(C1)

    And I am sure that the VBA module is under the same project with the
    workbook.

    Ron Rosenfeld wrote:
    > On 19 Mar 2006 19:23:40 -0800, "zhaoning.zju@gmail.com"
    > <zhaoning.zju@gmail.com> wrote:
    >
    > >Thanks, I think the method you provided is exactly what I want. But
    > >when I did it that way, it showed me a "#NAME?" in C2. What's the
    > >problem?

    >
    > Post back, by copying exactly (Edit/Copy) exactly what you entered into the VB
    > Editor and exactly what you entered as a formula.
    >
    >
    > --ron



  10. #10
    TKT-Tang
    Guest

    Re: How to evaluate a string as a formula?

    Have you not referred to the (ubiquitous) EEE letters located at
    J-Walk's Excel web-site ?

    Regards.


  11. #11
    zhaoning.zju@gmail.com
    Guest

    Re: How to evaluate a string as a formula?

    J-Walk's Excel web-site?
    Where is it?


  12. #12
    TKT-Tang
    Guest

    Re: How to evaluate a string as a formula?


    zhaoning.zju@gmail.com wrote:
    > J-Walk's Excel web-site ?
    > Where is it ?


    I see ; J-Walk is not his real name previously. But nowadays, he is
    running a blog by that name. That shows that he likes the name.

    Please visit the following link (to start with, and then, one may wish
    to proceed further) :-

    http://j-walk.com/ss/books/index.htm

    Please do so today and thereafter, everyday ; any time of the day,
    well, almost. That's a pilgimage to the Mecca of Excel (You won't mind,
    Mr. Walker ?).

    Regards.


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