How can i calculate the velocity of al those rats in X and Y coordinates

Hey Guys,

I have a file with time and many X and Y coordinates of 8 rats who walk through a maze, i need to calculate the X and Y velocity of al those rats separately. Can someone help me with this? (Sorry i am a matlab noob...)

Answer 1

[Sean de Wolski]

To get the data into MATLAB, use the Import Tool on the left hand side of the toolstrip or double click the file in the current folder browser.

At each step, calculate the distance walked by each rat (I'd use hypot and diff to do this) and divide by the time.

For example:

x = 0:10
y = 0:10
t = 0:10

rates = hypot(diff(x),diff(y))./diff(t)
% hypot(Difference in x difference in y) divided by difference in t

[Paul]

I dont get it exactly.. sorry! i do have this right now (attached m-file). Is this right?