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What to do with the VAL Function

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    #1

    What to do with the VAL Function

    Hi Guys
    I have a table with the following two fields:
    One Character field width 3 Value 17.45
    and a Numeric field width 10 decimal 2 that yields the Value 17.0 using the VAL function in the field rule.
    Yet when testing it in the interactive editor it produces the following results.


    dim NT as c
    NT = "17.45"
    ?Val(NT)
    = 17.45

    Am I missing something here?
    Any help with this one would be appreciated.

    Peter
    Tags: None
    #2
    Re: What to do with the VAL Function

    One Character field width 3 Value 17.45
    Now that's really tough to do. I count four digits and a decimal in 17.45. How do you get that into a character field width 3?

    If you really want to test it in the interactive do something like this using your table and field names.

    Code:
    tbl = table.open("item")

? tbl.COST
= 1.85

? tbl.cost_text= "1.85     "

? val(tbl.cost_text)
= 1.85

tbl.close()
    There can be only one.

    Comment

      #3
      Re: What to do with the VAL Function

      Stan
      My apologies, typo on my part its field width 5.

      Thanks

      Comment

        #4
        Re: What to do with the VAL Function

        yields the Value 17.0 using the VAL function in the field rule
        So what does this mean? You have a calculated field using val(character_field_name)?
        There can be only one.

        Comment

          #5
          Re: What to do with the VAL Function

          Hi Stan
          Tharacter field width is 5 and it has the value "17.45" this is how it gets imported from a CSV file.
          The calculated field width is numeric 10 with decimal 2
          It looks like the values in the numeric field column gets rounded of ie: 17.00

          Thanks
          Peter

          Comment

            #6
            Re: What to do with the VAL Function

            It looks like the values in the numeric field column gets rounded of ie: 17.00
            Where do you see 17.00? Browse column, form field? Check the format of either of those in the properties. Calculated fields don't automatically change to the proper format if you've been making some changes.
            There can be only one.

            Comment

              #7
              Re: What to do with the VAL Function

              Hi Stan
              I tried what you suggested in the interactive editor working directly from the table:
              Working with just the variable in the interactive editor:
              Code:
              dim vNT as c
vNT = "13.17"
?VAL(vNT)
= 13.17
              Working directly from the table in the interactive editor:(There are no forms involved)
              Code:
              dim tbl as p
dim vNT as c
tbl = table.open("fclock")
vNT = tbl.NT
? vNT
= "13:17"
?VAL(vNT)
= 13
              Last edited by gagsoft; 08-13-2014, 01:35 AM.

              Comment

                #8
                Re: What to do with the VAL Function

                Stan is probably asleep so I will chime in. The problem is the semi colon. The val function converts a string representation of a number. The semi colon is a non numeric character so the conversion stops there and ignores the rest.

                These are examples from the help on val()

                val("12345") -> 12345
                val("abc234") -> 0
                val("1234abc234") -> 1234


                If the csv is supplying the semicolon (and you can't change that) then you can alter the calculated expression to change the semi colon to a period.

                val(strtran(NT,":",".")
                Last edited by Tim Kiebert; 08-13-2014, 03:07 AM.
                Tim Kiebert
                Eagle Creek Citrus
                A complex system that does not work is invariably found to have evolved from a simpler system that worked just fine.

                Comment

                  #9
                  Re: What to do with the VAL Function

                  Tim, has put his finger on the problem, but on this side of the pond we call ":" a colon. We reserve semi-colon for ";" <grin>

                  Comment

                    #10
                    Re: What to do with the VAL Function

                    Thanks guys
                    This is already in a dbf table after the import.
                    There is no semi-colon or colon in this field:-)
                    This is what I have in the field "                    13:17"
                    What should the syntax be if the fieldname is NT.
                    Excuse my ignorance on the strtran function.
                    I do understand that the VAL() function will ingore everything after the dot based on the example.

                    Thanks

                    Comment

                      #11
                      Re: What to do with the VAL Function

                      There is no semi-colon or colon in this field:-)
                      This is what I have in the field "13:17"
                      I do understand that the VAL() function will ingore everything after the dot based on the example.
                      I see a colon between the 3 and the second 1. There is no dot in the example.

                      "13:17" is not a character representation of a number so val() can ony render the value of the digits up to the first non-digit character.


                      ? val("13.17")
                      = 13.17

                      ? val("13:17")
                      = 13
                      There can be only one.

                      Comment

                        #12
                        Re: What to do with the VAL Function

                        I'm with Stan (and Tim) on this one. Peter, maybe its time to head to the optometrist? <grin>

                        Comment

                          #13
                          Re: What to do with the VAL Function

                          Hi guys
                          I guess I do need to go see an optometrist or a bit of shut eye will also do:-)
                          But now that I see the colon, I have to work around it.

                          I could have used this.
                          Code:
                          ?VAL(STUFF("13:47",3,1,"."))
= 13.47
                          Or this
                          Code:
                          ?stritran("13:47", ":", ".", 1, 3, 1)
= "13.47"
                          But I am also presented with values like "9:05"

                          Thanks

                          Comment

                            #14
                            Re: What to do with the VAL Function

                            You're supplying optional parameters to strtran() that aren't necessary. All you need to do is replace the colon with a period.

                            ? stritran("13:47", ":", ".")
                            = "13.47"
                            ? stritran("9:05", ":", ".")
                            = "9.05"
                            ? stritran("14879:234821", ":", ".")
                            = "14879.234821"
                            There can be only one.

                            Comment

                              #15
                              Re: What to do with the VAL Function

                              Stan
                              Thanks.
                              I did not know exactly how the stritran worked and that it would accommodate strings with variable length.

                              Much appreciated.

                              Comment

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