How to count steps represented by the acceleration data given in text file?

i have a acceleration data in text file. im tryin to read this text file and make a count steps plot, but i couldn't. and the output should look like this:

Answer 1

[Alan Stevens]

Like this (you can plot the other two - look up help on subplot):

M = csvread('walking.txt');
x = M(:,1); y = M(:,2); z = M(:,3);
t = 1:numel(x);
plot(t,x,t,y,t,z)
xlabel('time'), ylabel('acceleration')
legend('x','y','z')

[Hakan]

thanks a lot