calcDisplacement.ijm

for (i = 0; i < nResults - 1; i++){
	trackID = getResult("Trajectory", i);
	nexttrackID = getResult("Trajectory", i + 1);
	if (trackID == nexttrackID){
		x1 = getResult("x", i);
		y1 = getResult("y", i);
		x2 = getResult("x", i + 1);
		y2 = getResult("y", i + 1);
		displacement = sqrt(pow(x2 - x1, 2) + pow(y2 - y1, 2));
		setResult("Displacement", i, displacement);
	} else {
		setResult("Displacement", i, NaN);
	}
}