Distribution Plot in QlikView

Qlik Sense added a Distribution Plot visualization in the June 2017 release.   QlikView does not have a specific chart type for distribution plot, but you can achieve the same with a scatter plot.

The trick is to set the Y value (Expression #2) to a constant value such as “1”.  Here’s a distribution of Life Expectancy by Country (source: WHO 2017).

Dimension: Country
 X-Axis: =[Life Expectancy]
 Y-axis: =1

It works, but it’s difficult to understand how many points overlap.  You can switch the Style to the outlined ball similar to Qlik Sense and that helps.

I find a more effective technique is to add some transparency into the color.  Overlapped points will result in a darker color.

You can also highlight points using set analysis or alternate states.

 

Adding reference lines such as  Quartiles can provide additional understanding.

To add a second dimension e.g.  “Sex” (values: Male,  Female, Both)  replace the fixed Y-axis expression with an expression that generates an index number for the values.

=Dual(Sex, FieldIndex('Sex', Sex))

That will assign Y-values 1,2,3 to the Sex values.  The Dual() will ensure the text value will show in the popup. The Y-axis  will still display a numeric value so I’ve hidden the axis.  That leaves us without labels for the three lines.  We can either create labels using text-in-chart or use a color coding scheme.

Distribution plots can be oriented vertically by using a fixed X-axis. If you’ve used my ScriptRepository tool, you may recognize that the search results scroll-guide (the yellow dots) are a narrow scatter plot.

-Rob

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