Forecasting
A work around is to overlap two individual charts - below you will see forecast for Sales and Product Cost from Adventure works. However, the legend is lost as each chart only has one variable.
A trade-off with R charts I have noticed is that slicers do not apply to the chart. Has that changed?
I did try this approach of using overlapping charts, but that doesn't work either. What I want to do is to plot one forecast series and one actual series on the same (or overlapping) chart. But the problem is that after I add a second series to the same line chart, the forecasting disappears. In my chart, I'm trying to plot the actuals from January 2016 to December 2016; the other series from January 2017 to December 2017. So the x-axis should be the same for both series, and this is why I need one actual and one forecast series. Make sense?
Another problem with overlapping is that tooltips will not work on the chart in back.
Yes, slicers do definitely apply to R visuals if that is what you're asking. Not sure though if it's possible to plot one actual and one forecast series on the same chart.