I love the Garmin connect service. Great with my Edge Touring Plus, used it to create courses and of course look at my rides.
Now I have a course I do regularly (it's my baseline course to gauge my performance) and I have used the compare activities but it is text only. It would be good if you could overlay the speed elevation chart from a previous activity with a later one of the same activity.
I'd find this useful as I'm looking to get more consistency of speed over my course and would be good to see where I'm improving over previous runs.
Short of exporting the data to a CSV file and manipulating it in a spreadsheet any ideas on how this could be done?