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The Alpha Software Forum Participation Guidelines

The Alpha Software Forum is a free forum created for Alpha Software Developer Community to ask for help, exchange ideas, and share solutions. Alpha Software strives to create an environment where all members of the community can feel safe to participate. In order to ensure the Alpha Software Forum is a place where all feel welcome, forum participants are expected to behave as follows:
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Bonus TIPS for Successful Posting

Try a Search First
It is highly recommended that a Search be done on your topic before posting, as many questions have been answered in prior posts. As with any search engine, the shorter the search term, the more "hits" will be returned, but the more specific the search term is, the greater the relevance of those "hits". Searching for "table" might well return every message on the board while "tablesum" would greatly restrict the number of messages returned.

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Creating a Linear regression/Varaible problems

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    #1

    Creating a Linear regression/Varaible problems

    I want to make a linear regrssion(LR) (Slope, Intercept & R Squared)in a form for a test I am doing. The data for the LR is needed for several records so i want to set it up as a set of variables on the form and use calculated fields or a script to do the calculations.
    I have the calculations.
    I want to use a variable to hold the values for the LR and then do the calculations as calculated fields.
    I created the varables using the variable deffnintions screen. Then I attached the variables to the form.
    But when I go to put any numeric value other than the default in I get the error
    "Extra Chartacters at the end of experssion"
    I deleted all the calculated fields and I still get the error. the only way out of the error is to return to the default value. this kind of defeats the purpose of a varaible if I cannot modify it.

    Have any Ideas of another way to get where I want to go?
    Tags: None
    #2
    RE: Creating a Linear regression/Varaible problems

    Have you tried to compact the database after removing you're calculated fields? If you just delete them from the form, the may still be in the database and being calculated, just not displayed. Compacting should remove them.

    If you've defined the calculated fields at the form level, they are evaluated as input is received. If one of the variables gives an impossible result (divide by zero) you could get an unexpedted result.

    You might try putting the calculations in a script attached to the on-push event of a button. Then you could input all of your data, push the button for the result.

    Comment

      #3
      RE: Creating a Linear regression/Varaible problems

      Have you tried to compact the database after removing you're calculated fields? If you just delete them from the form, the may still be in the database and being calculated, just not displayed. Compacting should remove them.

      If you've defined the calculated fields at the form level, they are evaluated as input is received. If one of the variables gives an impossible result (divide by zero) you could get an unexpedted result.

      You might try putting the calculations in a script attached to the on-push event of a button. Then you could input all of your data, push the button for the result.

      Comment

        #4
        RE: Creating a Linear regression/Varaible problems

        Jesse,

        Consider posting a working model here. Will greatly simplify debugging.

        Unfortunately, a key term you use in your message is ambiguous. There are fields in tables which by field rule can become 'calculated fields', and there are fields which can be placed on forms which reference variables that are not stored in the table. These latter fields are also sometimes called calc fields. I can't tell from your message which you are referring to.

        -- tom

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