topic Re: Viewing data as a sequence in QlikView

Viewing data as a sequence

Wed, 10 Feb 2016 04:47:15 GMT

Hi All

I have been struggling with the problem for a couple of weeks now

I am a novice at Qlikview and just unable to get this right

I need to work out the top sequence of Pitch Type for the 1st 3 Pitches

I have attached a sample data file

I use Pitch Count to determine order of Pitches

1--0 or 0--1 = 1st Pitch

1--1,2--0,0--2 = 2nd Pitch

Strikeout,3--0,2--1,1--2 = 3rd Pitch

However, the Pitch count column is empty when the Batter makes contact with the ball. As a result, Pitch Result has a value 'Ball in Play'

So when this happens, Pitch Count is empty and could equal 1st, 2nd or 3rd pitch

I need to determine the most common Pitch Type sequence for the 1st 3 pitches (i.e Fast Ball, Change Up, Screw Ball)

Please could someone help as this is a really important stat for Baseball and Softball

Re: Viewing data as a sequence

swuehl — Wed, 10 Feb 2016 10:06:15 GMT

I haven't really understood what you want to do with the 'Ball in play' case (there are also other cases, like 'Walk' or 'Hit by pitch' in [Pitch Count] field.)

You can start with this

LOAD *, RANGESUM(SUBFIELD([Pitch Count],'--',1),SUBFIELD([Pitch Count],'--',2)) as Pitch;

LOAD [Pitchers Name],

[Pitch Type],

[Game Pitch Result],

[Pitch Count],

Period

FROM

[Sample Data.csv]

(txt, codepage is 1252, embedded labels, delimiter is ',', msq);

Then create a straight table chart with Pitch as dimension, and

=Mode([Pitch Type])

as expression.

Pitch	Mode([Pitch Type])
	Change Up
1	Screw Ball
2	Change Up
3	Curve Ball
5	Drop Ball
6	Curve Ball

Re: Viewing data as a sequence

Wed, 10 Feb 2016 13:58:10 GMT

Thank you, the expression works

However, when the Pitch Result column has the value ''Ball in Play'', the expression does not take into account the Pitch Type as this Pitch Count column is empty and hence show 1 less pitch

Re: Viewing data as a sequence

swuehl — Wed, 10 Feb 2016 14:31:47 GMT

Still unsure about the required logic since I don't really know baseball.

Maybe like

LOAD *,

if([Game Pitch Result] = 'Ball in Play',

Rangesum(Peek(Pitch),1),

Rangesum(SUBFIELD([Pitch Count],'--',1),SUBFIELD([Pitch Count],'--',2))

) as Pitch,

RowNo() as RowNo

;

LOAD [Pitchers Name],

[Pitch Type],

[Game Pitch Result],

[Pitch Count],

Period

FROM

(txt, codepage is 1252, embedded labels, delimiter is ',', msq);

Re: Viewing data as a sequence

Thu, 11 Feb 2016 08:46:38 GMT

Great. It works

Thank you

Re: Viewing data as a sequence

oknotsen — Thu, 11 Feb 2016 08:49:06 GMT

If your question is now answered, please flag the correct answer with Correct Answer and optionally any Helpful replies.

If not, please let us know what part of your question still needs help .

Re: Viewing data as a sequence

Thu, 11 Feb 2016 08:52:42 GMT

Hi Onno

I cannot see the Correct Answer icon on my PC. I have used multiple browsers and still cannot locate it

Re: Viewing data as a sequence

MarcoWedel — Thu, 11 Feb 2016 12:01:15 GMT

another way to sum the subfields could be:

Evaluate(Replace([Pitch Count],'--','+'))

hope this helps

regards

Marco

Re: Viewing data as a sequence

swuehl — Thu, 11 Feb 2016 12:12:06 GMT

You may need to access the thread not from the inbox, but by following the link e.g. by clicking on the title.