This ticket concerns an improvement in the JS Graphs in Piwik, when plotting at least 2 metrics and comparing to each other.
For example when comparing Actions per visit and Visits, the 2 data set use the same Y axis causing one dataset to appear flat next to zero all along.
Instead for "Per visit" averaged metric, they should use a different axis than the one used to plot "totals" and sums.
See attached file
Actions per visit should be on a different Y axis with lower values.PNG