Using the RangeSum() function to plot cumulative figures in trendline charts

The charts in Qlik Sense don't provide the user with the inbuilt functionality to calculate the cumulative totals, as is the case with QlikView. In order to achieve the cumulative totals in a trendline chart, we make use of the RangeSum() function.

Getting ready

Load the following script that gives information on monthly sales figures for two years:

Sales: 
LOAD  
Month(Date#(Month,'MMM')) as Month, 
Year, 
Sales 
INLINE [ 
Month,Year,Sales 
Jan,2014,1000 
Feb,2014,1520 
Mar,2014,1600 
Apr,2014,3000 
May,2014,2500 
Jun,2014,4500 
Jul,2014,6000 
Aug,2014,6500 
Sep,2014,7800 
Oct,2014,6800 
Nov,2014,3000 
Dec,2014,2500 
Jan,2015,750 
Feb,2015,1200 
Mar,2015,800 
Apr,2015,600 
May,2015,2100 
Jun,2015,3500 
Jul,2015,4700 
]; 

How to do it…

1. Click on App overview under the Navigation dropdown and create a new sheet.
2. Drag across the Line chart object from the Assets panel on the sheet, and name it Cumulative Sales.
3. Add Year and...