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user defined functions

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    #1

    user defined functions

    I have defined a function called frequency() which tabluates the count of every unique value in a table. It works fine. I created a new function with no parameters using the function genie, called freq() and then copy and pasted the same code from frequency() into this code, except that I changed the function name to freq(). My intent was to add another parameter to allow the user to define the length of the returned string.


    However, the original function works fine, but the clone even without changes returns an empty string. The code for each function is listed below. Both are saved. Does A5 store the function definition somewhere other than the code editor? What am I not seeing that makes one work and the other not?

    FUNCTION frequency AS C (tablename AS C, fieldname AS C)

    dim valuelist as C
    dim countlist as C
    fieldname = "''+" +fieldname
    valuelist = table.external_record_content_get(tablename,fieldname,fieldname,"unique_key_value()")
    valuelist = *for_each(val1, alltrim(val1),valuelist)
    maxlen = max_str_length(valuelist, chr(13)+chr(10))

    countlist = CRlf()+*for_each(valu,padr(valu,maxlen+2,".") + " " +tablecount(tablename,fieldname + "=" +quote(valu)) ,valuelist)
    frequency = countlist

    END FUNCTION


    FUNCTION freq AS C(tablename AS C, fieldname AS C)

    dim valuelist as C
    dim countlist as C
    fieldname = "''+" +fieldname
    valuelist = table.external_record_content_get(tablename,fieldname,fieldname,"unique_key_value()")
    valuelist = *for_each(val1, alltrim(val1),valuelist)
    maxlen = max_str_length(valuelist, chr(13)+chr(10))

    countlist = CRlf()+*for_each(valu,padr(valu,maxlen+2,".") + " " +tablecount(tablename,fieldname + "=" +quote(valu)) ,valuelist)
    frequency = countlist

    END FUNCTION


    Thank,
    Dave
    David A. Volgas, MD
    Tags: None
    #2
    Re: user defined functions

    nevermind, a cup of coffee later ....

    I forgot to change the assignment of the function in freq() to freq = countlist


    I'm sorry.
    David A. Volgas, MD

    Comment

      #3
      Re: user defined functions

      Is this what you want?

      Code:
      fieldname = "cust_id"
fieldname = "''+" +fieldname
? fieldname
= "''+cust_id"
      Not sure I understand the intent.
      There can be only one.

      Comment

        #4
        Re: user defined functions

        so I changed the freq() function to the following ....

        FUNCTION freq AS C(tablename AS C, fieldname AS C, maxlen as N)

        dim valuelist as C
        dim countlist as C
        fieldname = "''+" +fieldname
        valuelist = table.external_record_content_get(tablename,fieldname,fieldname,"unique_key_value()")
        valuelist = *for_each(val1, alltrim(val1),valuelist)
        countlist = CRlf()+*for_each(valu,padr(valu,maxlen+2,".") + " " +tablecount(tablename,fieldname + "=" +quote(valu)) ,valuelist)
        freq = countlist
        END FUNCTION

        now, the user enters the length of the return label as maxlen to get output like....

        AL ............ 34
        GA ............ 13
        TN ............ 10
        LA ............ 5

        Happy functioning!
        Dave
        David A. Volgas, MD

        Comment

          #5
          Re: user defined functions

          Originally posted by Stan Mathews View Post
          Is this what you want?

          Code:
          fieldname = "cust_id"
fieldname = "''+" +fieldname
? fieldname
= "''+cust_id"
          Not sure I understand the intent.

          This makes it so the function can handle fields which have numeric data. In my practice, I use numbers for race, sex etc because they can be exported to a stats program for regression analysis.

          Dave
          David A. Volgas, MD

          Comment

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