removing zeros from matrix

Hi,

I've constructed a code looking at vertical force data and have it set to put each stance phase into it's own column. The one issue I'm having is that I have all these extra zeros. Any way to remove them so I don't have to export all of these zeros with the data I care about? Have tried "remove," "nonzeros," and "~=0" functions but with no luck.

Thanks in advance

[Jan]

Post the code you have tried and explain "no luck" with details. Then the readers can mention, what the problem is.

Answer 1

[Jan]

x(x==0) = [];

% Or:
x = x(x~=0);

Where do the zeros come from? Instead of removing them it might be easier to avoid to create them before.

[Perri Johnson]

Up until line 91, t_step becomes a 2694x10 matrix (a lot of the cells are zeros) because each stance phase is seperated by where it occurs over the time duration. when I try, t_step = t_step(t_step~=0); t_step becomes a 1649x1 matrix. I'm trying to keep all of the non zero values so I don't have a huge number of cells with zeros when I export the data.

the zeros come from this for loop that I have set up from lines 66 - 87

for i = 2:length(time)

p = p+1;

if TO == 10 %once the last element is reached, code breaks out of the for loop to prevent error

break

end

if grf_z(i) >= threshold && grf_z(i-1) < threshold

HS=HS+1;

t_RON(HS) = time(i);

f_RON(HS) = grf_z(i);

q = q+1;

elseif grf_z(i) < threshold && grf_z(i-1) >= threshold

TO=TO+1;

t_ROFF(TO)=time(i-1);

f_ROFF(TO)=grf_z(i-1);

end

if grf_z(i)>=threshold

t_step(p,q)=time(i);

f_step(p,q)=grf_z(i);

end

end