topic Re: Calculated Dimension with Threshold Variables in QlikView

Calculated Dimension with Threshold Variables

Tue, 14 Jan 2014 13:58:05 GMT

Hi Everyone!

I want to be able to indicate the effect of different factors on certain KPIs in a dashboard where the user has the option to select a factor (from a drop down linked to a variable) and set thresholds for classifying this as 'High', 'Medium' and 'Low', showing the average for weekly KPI value for High, Med and Low weeks.

The variables I have are:

$(vHigh) - above which classifies as a High week [linked to input box]

$(vLow) - below which classifies as a Low week [linked to input box]

(in between these two thresholds is a medium week)

$(vFactor) - selected from drop down

Data is at a weekly granularity. Something resembling:

LOAD * Inline [Week, KPI, Factor

1, 0.7, 17

2, 0.9, 18

3, 1.1, 14];

I figured I need to use a calculated dimension to classify each week as either high, medium or low based on the variables and then average the metric score for the week.

Can anyone help me with this?

Much appreciated.

Re: Calculated Dimension with Threshold Variables

Nicole-Smith — Tue, 14 Jan 2014 14:32:03 GMT

The attached should give you something to start off of.

Re: Calculated Dimension with Threshold Variables

Tue, 14 Jan 2014 14:44:04 GMT

Thanks for the response.

That's the sort of thing I'm going for but I need to classify the factor affecting the KPI, rather than the KPI itself...

Re: Calculated Dimension with Threshold Variables

Nicole-Smith — Tue, 14 Jan 2014 14:46:06 GMT

I don't understand what the Factor is. Can you give an example?

Re: Calculated Dimension with Threshold Variables

Tue, 14 Jan 2014 14:51:13 GMT

Sure

For example, if I'm looking to determine the impact of time spent training on the speed at which a marathon runner covers 26miles each week.

The duration of training is the factor. I want to measure the average speed for the marathon across weeks when the level of training is above or below given thresholds.

Re: Calculated Dimension with Threshold Variables

Nicole-Smith — Tue, 14 Jan 2014 14:59:40 GMT

Is the Factor supposed to affect the calculation? And if so, how?

Re: Calculated Dimension with Threshold Variables

Tue, 14 Jan 2014 15:06:43 GMT

The Thesholds are supposed to classify each week according to the factor.

I.e. Let's say I have five weeks where the time training is 11 hours, 9 hours, 6 hours and 2 hours and the High threshold is 7 with a Low threshold of 4

This means that the weeks 11 and 9 are High weeks, the 6 hour week is Medium and the 2 hour week is low. I then want to show the average KPI (Marathon time) for the high, medium and low weeks.

Re: Re: Calculated Dimension with Threshold Variables

Nicole-Smith — Tue, 14 Jan 2014 15:16:40 GMT

Okay, I think I get it now.

Have a look at the attached.

Re: Calculated Dimension with Threshold Variables

Tue, 14 Jan 2014 15:23:51 GMT

That's not quite what I'm looking for. The factor should actually be a data point (i.e. a numeric value) like the KPI itself.

Re: Re: Calculated Dimension with Threshold Variables

Nicole-Smith — Tue, 14 Jan 2014 15:51:48 GMT

I just changed the data to make it a numeric value. If it's supposed to affect anything else, I don't understand how.

Re: Calculated Dimension with Threshold Variables

Tue, 14 Jan 2014 15:58:07 GMT

Thanks, that's helpful.

In terms of how it affects the calculation - it would be the Factor, not the KPI encased in the aggr(avg( part of the calculated dimension.

Re: Calculated Dimension with Threshold Variables

Nicole-Smith — Tue, 14 Jan 2014 15:59:36 GMT

Ah, okay. Do you have everything you need then?

Re: Calculated Dimension with Threshold Variables

Tue, 14 Jan 2014 16:03:28 GMT

Yes, thanks