MATLAB: Matrix and vector multiplication elementwise

matrix and vector

I have a big matrix and vector. itry to present my problem with this exemple:

%

a=[1 2 3;2 3 4;4 5 6]
h=[2 2 2]

how to calculate:

 %
C=[a(1,1)*h(1) a(1,1)*h(2) a(1,1)*h(3); a(2,1)*h(1) a(2,1)*h(2) a(2,2);.......;...;a(3,3)*h(1) a(3,3)*h(2) a(3,3)*h(3)]:
?
Thank you

Best Answer

 bsxfun(@times,a,h)

Related Solutions

MATLAB: Take lines from array

A = repmat([1 1 1 1; 2 2 2 2; 3 3 3 3; 4 4 4 4],16,1); % Example matrix
B = zeros(32,4); % Preallocate B
B(1:2:end) = A(1:4:end,:); % Take line 1 of every 4.th line in A
B(2:2:end) = A(2:4:end,:); % Take line 2 of every 4.th line in A

results in:

A =
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
     1     1     1     1
     2     2     2     2
     3     3     3     3
     4     4     4     4
B =
     1     1     1     1
     2     2     2     2
     1     1     1     1
     2     2     2     2
     1     1     1     1
     2     2     2     2
     1     1     1     1
     2     2     2     2
     1     1     1     1
     2     2     2     2
     1     1     1     1
     2     2     2     2
     1     1     1     1
     2     2     2     2
     1     1     1     1
     2     2     2     2
     1     1     1     1
     2     2     2     2
     1     1     1     1
     2     2     2     2
     1     1     1     1
     2     2     2     2
     1     1     1     1
     2     2     2     2
     1     1     1     1
     2     2     2     2
     1     1     1     1
     2     2     2     2
     1     1     1     1
     2     2     2     2
     1     1     1     1
     2     2     2     2

MATLAB: Finding average between TFunct1,TFunct2,TFunct3

Hi,

how about this:

TFunct=zeros(1700,1); % or whatever
for i = 1 : 17000
TFunct(i,1)=mean([TFunct1(i,1),TFunct2(i,1),TFunct3(i,1)]);
end

or without a loop you can use this:

>> A=[1 2;2 3;3 4;4 5;5 6]
A =
       1     2
       2     3
       3     4
       4     5
       5     6
  >> B=[2 3;3 4;4 5;5 6;6 7]
B =
       2     3
       3     4
       4     5
       5     6
       6     7
  >> C=[3 4;4 5;5 6;6 7;7 8]
C =
       3     4
       4     5
       5     6
       6     7
       7     8
  >> D=[A(:,1)';B(:,1)';C(:,1)']
D =
       1     2     3     4     5
       2     3     4     5     6
       3     4     5     6     7
>> mean(D)
ans =
       2     3     4     5     6

Best Answer

Related Solutions

MATLAB: Take lines from array

MATLAB: Finding average between TFunct1,TFunct2,TFunct3

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