MATLAB: Decompose Data int a Matrix

radar

I got how to locate my data from the signal in the following link: http://www.mathworks.com/matlabcentral/answers/229678#answer_185935

but how to decompose my data int a matrix. I attached my row data.

Best Answer

The data you want is when the ‘lowSignal’ vector is equal to 1. If each column in your matrix has one pulse from that record, the separation has already been done. By definition, each column is a pulse, so if your matrix is ‘M’ and it is of size (Nx8), where ‘N’ is the number of rows, to get the first and eighth pulses:

Pulse_1 = M(:,1);
Pulse_8 = M(:,8);

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MATLAB: How Zero padding inside a matrix

Create a second matrix of zeros, then assign the appropriate rows of your first matrix to the rows you want in the second matrix:

A = [ 1 2 3 4
    5 6 7 8
    9 10 11 12
    13 14 15 16];
Desired_Rows = 10;                                          % Pick A Number
B = zeros(Desired_Rows, size(A,2));
B([1:2 end-1:end],:) = A
B =
       1     2     3     4
       5     6     7     8
       0     0     0     0
       0     0     0     0
       0     0     0     0
       0     0     0     0
       0     0     0     0
       0     0     0     0
       9    10    11    12
      13    14    15    16

MATLAB: How to reference the element of a matrix in a loop

k and l inside the for-loops are scalars, thus you can't take an indexing k(s) or l(s).

Now what your code supposes to do and how to fix it, nobody would know.

What I *guess* is

k=idx1(:,1);
l=idx1(1,:)';
for s=1:138
            if (WindSp(k(s,1),l(s,1))<2)
                stability_class(k(s,1),l(s,1))=1;
            elseif(WindSp(k(s,1),l(s,1)==2)|WindSp(k(s,1),l(s,1))<3)
                stability_class(k(s,1),l(s,1))=2;
            elseif(WindSp(k(s,1),l(s,1))==3|WindSp(k(s),l(s))<5) %#ok<*OR2>
                stability_class(k(s,1),l(s,1))=3;
            elseif((WindSp(k(s,1),l(s,1))==5)|(WindSp(k(s,1),l(s,1))<6))
                stability_class(k(s,1),l(s,1))=4;
            else
                stability_class(k(s,1),l(s,1))=5;
            end
end

Best Answer

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MATLAB: How Zero padding inside a matrix

MATLAB: How to reference the element of a matrix in a loop

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