Get Aggregate Values - px.area

Hey Everyone! So I’m trying to use the plotly express area chart to create some charts, and I would love to add a trace (without a fill) that indicates the total summation of the given traces on the plot (i.e. if I were to deselect one of them, then the trace would update to accommodate that. I tried to see if there was some sort of in-built aggregation parameter within the area chart itself but I wasn’t able to find it in the documentation and my own implementation is static when you select or deselect various lines using the legend. Happy to expand on my question if it doesn’t make sense, thanks! :slight_smile:

I’m not sure if this is along the lines of the (seemingly deprecated) transforms component of Plotly?