matrix dividing

2011 11 14
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If I have a big matrix like this: A=ones(1,450000). How can I divide it in 300 equal parts (1, 1500) and multiple these 300 parts (arrays) with a matrix with dimensions B=(1,300)?
Thank you...

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Fangjun Jiang
Fangjun Jiang 2011-11-15

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A=ones(1,450000);
NewA=reshape(A,300,[]);
C=B*NewA;

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athpapa -
athpapa - 2011-11-15
with the reshape that you told me, I want now to multiple the first column of array B with the first only line of array NewA, and so on...the 2nd column of array B with the 2nd only line of NewA. Do you know how can I do this??
Thankssssss
Fangjun Jiang
Fangjun Jiang 2011-11-15
Use this example to understand the row and column
Assume B=magic(3)
B(:,1) is the first column of B, B(:,2) is the second column,...
B(1,:) is the first row of B, B(2,:) is the second row, ...

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athpapa -
athpapa -
2011-11-14

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