MATLAB: DATA ANALYSIS

loopmatrix manipulation

Hi,

If I have x = 1:10 and y = 1:10 and I would like to compute

x(:,1)'.*y' and

x(:,2)'.*y' and

x(:,3)'.*y' all the way to

x(:,10).*y'

how can I write a fast way to do this for example in a loop?

Any help would be greatly appreciated.

Best Answer

You don't need a loop

x.'*y

Related Solutions

MATLAB: How to change a 1×10 matrix into two 1×5 matrices.

You typed [x; y; x; y; x; y; x; y; x; y;], which will result in a 10x1 matrix instead of 1x10. In any case, you can use reshape(), for example

>> x = [1 2 1 2 1 2 1 2 1 2]
x =
     1     2     1     2     1     2     1     2     1     2
>> y = reshape(x, 2, [])
y =
     1     1     1     1     1
     2     2     2     2     2

MATLAB: DATA ANALYSIS

I suggest going over the getting started documentation and taking a look at this

x = 1:5;
y = 1:5;
t = -1:1/2:1;
u = 0:1/2:2;
y = repmat(y,5,[]);
t = repmat(t,5,[]);
z = y-(t+u'*x);
z = z(:)'

Best Answer

Related Solutions

MATLAB: How to change a 1×10 matrix into two 1×5 matrices.

MATLAB: DATA ANALYSIS

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