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Case Statement with Multiple Conditions

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    #1

    Case Statement with Multiple Conditions

    Everyone was such a help on my last problem, that I have another one to throw out at you.

    I'm having a problem creating a case (or an "if") statement that says the following:

    If "Difference" = 1-9, then 80

    If "Difference" = 10-19, then 90

    If "Difference" = 20-29, then 160

    If "Difference" = 30-39, then 530

    If "Difference" >40, then 530

    (* This is a fine list for speeding offenses, and all are numeric fields.)

    This is what I came up with:

    case( DIFFERENCE <10,80,DIFFERENCE<>10-19,90,DIFFERENCE<>20-29,160,DIFFERENCE<>30-39,290,DIFFERENCE>40,530)

    and it works for speeds less than 10 or between 10 and 19, but above 19, the end result stays at 90.

    (Now that I think about it, maybe an "if" statement would be better, with a "result false" answer of "0")
    Sergeant Richard Hartnett
    Hyattsville City Police Department
    Maryland
    Tags: None
    #2
    Re: Case Statement with Multiple Conditions

    Case is fine if constructed correctly. I'm not sure what

    DIFFERENCE<>10-19 means to you but to Alpha it means

    DIFFERENCE<>(10-19) or DIFFERENCE<>-9

    I think you want

    case( DIFFERENCE <10,80,between(DIFFERENCE,10,19),90,between(DIFFERENCE,20,29),160,between(DIFFERENCE,30,39),290,DIFFERENCE>=40,530)

    All the intermediate expressions yield

    DIFFERENCE<>-9
    There can be only one.

    Comment

      #3
      Re: Case Statement with Multiple Conditions

      Rich

      Give this a try
      Code:
      case( vAmountover <10,80,vAmountover >=10 .and. vAmountover<=19,90,vAmountover >= 20 .and. vAmountover<= 29,160,vAmountover<>30-39,290,vAmountover>40,530)
      I removed Difference because it is a function name in Alpha.

      It returns the following:

      Code:
      vamountover=25
? case( vAmountover <10,80,vAmountover >=10 .and. vAmountover<=19,90,vAmountover >= 20 .and. vAmountover<= 29,160,vAmountover<>30-39,290,vAmountover>40,530)
= 160
      Regards,

      Jeff

      Comment

        #4
        Re: Case Statement with Multiple Conditions

        Jeff,

        I think you missed converting

        vAmountover<>30-39

        to

        vAmountover>=30.and. vAmountover<=39
        There can be only one.

        Comment

          #5
          Re: Case Statement with Multiple Conditions

          Hi Jeff

          I didn't realize the word "Difference" was used in the A5 program, so I changed it slightly to "vDifference." As such, I used your formula, and everything works fine except for speeds above 40 Mph. For those, the fine is staying at 290, although I don't know why.

          Here's what I have now:

          CASE( VDIFFERENCE <10,80,VDIFFERENCE >=10 .AND. VDIFFERENCE<=19,90,VDIFFERENCE >= 20 .AND. VDIFFERENCE<= 29,160,VDIFFERENCE<>30-39,290,VDIFFERENCE >40,530)
          Sergeant Richard Hartnett
          Hyattsville City Police Department
          Maryland

          Comment

            #6
            Re: Case Statement with Multiple Conditions

            Hi Rich

            This should do it.

            Code:
            CASE(VDIFFERENCE <10,80,VDIFFERENCE >=10 .AND. VDIFFERENCE<=19,90,VDIFFERENCE >= 20 .AND. VDIFFERENCE<= 29,160,VDIFFERENCE>=30 .and. vdifference<=39,290,VDIFFERENCE >40,530)
            Stan: Thanks. I had missed that.

            BTW, Rich I didn't know Difference was a function name either until I started typing it into the interactive window and Alpha was showing the auto complete info for the function. That's what tipped me off.

            Regards,

            Jeff

            Comment

              #7
              Re: Case Statement with Multiple Conditions

              That was it Jeff, thanks a bunch!!
              Sergeant Richard Hartnett
              Hyattsville City Police Department
              Maryland

              Comment

                #8
                Re: Case Statement with Multiple Conditions

                Simplify:
                case(vDifference<10,80,vDifference<20,90,vDifference<30,160,.t.,530)

                Comment

                  #9
                  Re: Case Statement with Multiple Conditions

                  You said:
                  Simplify:
                  case(vDifference<10,80,vDifference<20,90,vDifference<30,160,.t.,530)

                  But how would the system know what the correct fine was for say "8 Miles over the limit?" 8 is not only under 10, but is also under 20, under 30, etc.

                  In other words, how does it know that a speed is for example, "under 20, but over 9?" Wouldn't it need the "<>10-19" expression to identify it?
                  Sergeant Richard Hartnett
                  Hyattsville City Police Department
                  Maryland

                  Comment

                    #10
                    Re: Case Statement with Multiple Conditions

                    Ahh!.. I thought you might ask.

                    case() runs from left to right and stops after it finds the first true statment.
                    So, when it evaluates 8, the first true statment is <10, all others do not even come in the picture.

                    Code:
                    dim vdifference as n
vdifference=8
?case(vDifference<10,80,vDifference<20,90,vDifference<30,160,.t.,530)
= 80

vdifference=19
?case(vDifference<10,80,vDifference<20,90,vDifference<30,160,.t.,530)
= 90
                    and so on..

                    Comment

                      #11
                      Re: Case Statement with Multiple Conditions

                      I see, said the blind man.

                      How silly of me to have thought you'd be wrong!!!

                      I learn something new (about Alpha 5) every day.
                      Sergeant Richard Hartnett
                      Hyattsville City Police Department
                      Maryland

                      Comment

                        #12
                        Re: Case Statement with Multiple Conditions

                        You know what happens when a blind man leads a blind man?
                        This time, we just got lucky.

                        Comment

                          #13
                          Re: Case Statement with Multiple Conditions

                          ... and we better not go speeding when we're in New Carrollton :)
                          It is easier to get older than wiser

                          Comment

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