I am attempting to make a graph that has one column with a full month of data (black bars), and one column that fills up as the days of the month progress (green bars). I would also like to track the percentage of the forecast achieved each day as a line graph (red line) on the secondary axis.
The problem I am having is that it does not appear that one can exclude values that are zero. So in the graph I would like to have the red line disappear once the values become zero so that there isn't a massive drop of like in the image shown.

