showing average of variable on y-axis with a marker?

[mg1075]

Would it be valuable - or too much noise - to be able to add an indicator for the average or mean value of a field on the y-axis? Is there already a way to do this with parallel-coordinates?

This is just a mock-up to help illustrate the concept; note the circles on the y-axis meant as a way to indicate the average.

[dehli]

Hey @mg1075, This hasn't been implemented yet to my knowledge. Some things to think about are:

• How would you display the average for non-numeric axes? You could use the median, but if there's a tie how do you split between the two values. Maybe this could be limited to only numeric axes.
• If you have brushing turned on would the average change when you brush the chart?

It's a good idea though. I think it could be useful in certain circumstances.