Click Here to Run the MovingMan V1R5
- Smoother model:
- Could try increasing
the # smoothing points gradually.
- Could try a direct 2nd
order differentiation of the smoothed position data.
of unequally spaced data
way to handle nonequispaceddata is to fit a second-order Lagrange
polynomial to each set of three adjacent points.
Drag the man.
set a value for position
drag the cursor.
- Vectors have wrong
direction when axes reversed.
- There is a dependency
on an incorrect computation in phetcommon::graphiclayerSet::getbounds()
- The walkway is off
- Sometimes when time
stops, derivatives are astronomical:
Window 98 + 1.5.0_02 à buttons are all same
color, brick wall disappears.
Cursor is ahead of the
last data point because of the smoothing window.
The man faces the wrong
direction if you drag a time-cursor backwards.
The Cursor’ remain when graphs are minimized.
Going from smooth to
sharp has a lag in derivatives.
- Move plotdevice into
- Move plotborder inside
Test under 1024x768.
Find and remove in-code
- Performance terrible on
Ron’s machine, when dragging the man (or slider), long time before
charts update. Reproducible with –noddraw.
Changes in this version:
Added Velocity &
Acceleration Vectors (attached to man)