Finding a range of data greater than 0.1

I have a range of data, for example like this

X = [ 0.02 0.17 0.32 0.28 0.04 -0.07 -0.01 -0.19 -0.45 -0.49 0.01 0.05 0.11 0.18 0.48 1.14 1.43 1.78 2.3 1.6 1.0 -0.1 0.1 0-2]

I want to find a range of X that all values in that range are greater than 0.1. I use this: find((X >= .1) ,1,'first') and find(X >= .1) ,1,'last')

but all data in that range are not greather than 0.1. And at last I want to find the longest range that has values more than 0.1.

In this example the answer is [0.11 0.18 0.48 1.14 1.43 1.78 2.3 1.6 1.0]

Answer 1

[Alan Stevens]

There must be a neater way, but the following might help:

X = [ 0.02  0.17  0.32   0.28   0.04   -0.07  -0.01   -0.19   -0.45 ...
    -0.49   0.01  0.05   0.11   0.18   0.48   1.14  1.43   1.78   2.3 ...
    1.6    1.0   -0.1   0.1  0-2];
Xptr = 0;  Yptr = 1; row = 1;
while Xptr<numel(X)
    
    Xptr = Xptr+1;
    if X(Xptr)>0.1
        Y(row,Yptr)=X(Xptr);
        Yptr = Yptr+1;
    elseif Xptr>1
        row = row+1;
        Yptr = 1;
    end
      
end
XXptr = 1;
[r, c] = size(Y);
for i = 1:r
    if Y(i,1)>0
       XX(XXptr,:) = Y(i,:);
       XXptr = XXptr+1;
    end
end
disp(XX)

    0.1700    0.3200    0.2800         0         0         0         0         0         0
    0.1100    0.1800    0.4800    1.1400    1.4300    1.7800    2.3000    1.6000    1.0000

[Sahar khalili]

Thank you so much. It works. And is there anyway to point out to the row of these values in the X?

[Alan Stevens]

The following will pick out the starting column numbers

find(X==XX(1,1))
find(X==XX(2,1))

[Sahar khalili]

I do appreciate it.