Phase change line on a graph?

T

tobyhons

How can I add a line indicating a change in the data on a graph? Currently I
can use the draw functions to add a line but I would like to be able to add
something to the spreadsheet so the line moves as more data is added.
 
M

mrice

Have you considered adding an additional data series which holds the
original data so that you can see where the change is?
 
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