A bit more details about the idea.
Now, to a visualization in a matrix visual and to avoid code duplication in every visual in a report I use a calculation group to generate SVG images. To configure the solution I have to edit multiple calculation group items to define what fields and measures will be used in different visuals (based on a measure name).
The idea is to be able define a custom visual calculations function (something like a measure with parameters) instead.
Then you will write a visual calculation:
New Column = UDF_SVG_ABSOLUTE_VALUES ([Sales], PREVIOUS ([Sales])
[Sales] and previous year [Sales] parameters will be passed into the function to generate SVG code of the chart with of two columns: black for [Sales] and grey for previous year [Sales].
So the result of UDF_SVG_ABSOLUTE_VALUES ([Sales], PREVIOUS ([Sales]) function is what you see in column AC,PY on the image. Similar approach (just different user defined functions with different parameters to generate 2 other columns with charts).
The code of the user defined function will be simple: it's just about converting input parameters (sales in the example) into the SVG rectangles.
Also you'll be able to make custom functions that generate any SVGs you want.
