Calculate cumulative sum

[nithishnaidu]

Hey,

I'm using django-slick-reporting to render graphs, particularly the ReportGenerator class so that I can send the graph data as a json and then render a graph on the frontend.

I'm trying to render a graph that shows the cumulative value for a particular field. (The red line graph from the below image)

How can we calculate the cumulative value using django-slick-reporting?

Thanks

[RamezIssac]

Hello @nithishnaidu
For the cumulative sum you'd need to do this part of the calculation yourself by looping over the dataset.
Sorry, so far did not find a better way yet :)

You can do it via custom calculation fields but that would be much less efficient.