Does the speed given by the tracking-tool indicate speed in the direction from the earlier point (picture or startingpoint) or is it given along the X-axis?
"In the direction from the earlier point". It is basically the length of the last segment of the trajectory divided by the frame interval time.
Would it be possible to have an optional speedmeasure with BOTH the x- and y-axis separately?
Well, if we can find a way to provide the option without cluttering the interface, yes.
Currently I would be more inclined to delegate this type of specific measurements to the external spreadsheet / plotter application. Maybe we'll need more options in the export dialog ?
But if it's a matter of adding an option to the combobox and then displaying a different label on the key images / current point, then it should keep the interface clear.
I'll try to see why the spreadsheet export would fail.
My athlete is a young female longjumper. She won the Finnish championship last weekend jumping 599 in the under 17y agegroup
That's great
I'm a former high jumper myself.
And further: the possibility for angular speed to a defined axis (a new marker). If I mark the hip and start the tracking-tool on the knee, then I could get the angular speed of an athletes kneelift.
And at last: the possibility to change these to measures of acceleration/deceleration.-
I think this the core of the issue, there are so many thing we could measure and display ! ![]()
There is also the possibility of multi point tracking to directly see an angle variation, or measuring the alignment of a tracked line with a reference line (for exemple tracking the leg alignement with a vertical reference frame during walking cycle seen from behind).
And then there are all the visualisation approaches. having a plot of the positions on X axis vs time or Y axis vs time, or speed over time, acceleration, etc.
We need to list / gather all ideas in the "measurements" area and come up with a coherent system.
For this we should probably follow the discussion in a specific thread, like here for exemple.

