I want to perform certain matrix substraction using vectorization

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MSDataSpl1 2017-8-2

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评论： MSDataSpl1 2017-8-9

I have a mtrix say A = [2,5,7]' and another matrix B = [2,7,9]', now i want to subtract B from A in such a way like each element of B will get subtracted from all elements of A, like c = A - B then c should be like (Expected outcome) = [0 3 5, -5 -2 0, -7 -4 -2]

Its like each element of B will get deducted from all elements of A and result will be stored in row wise in new matrix row wise.I dont want to use any loops but only vectorization.

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MSDataSpl1 2017-8-9

在 MATLAB Online 中打开

When i am using this for larger dataset it is causing memory error:

Error using bsxfun Out of memory. Type HELP MEMORY for your options.

Where,

StartTime = currTime(1:LenRxDiv-1);

    Data1 = StartTime.';
    Data1_s = bsxfun(@minus ,ActTimeStop,Data1);

Value of LenRxDiv is 359574

ActTimeStop is 114020 * 1

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Answer 1

Jan 2017-8-2

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https://ww2.mathworks.cn/matlabcentral/answers/351207-i-want-to-perform-certain-matrix-substraction-using-vectorization#answer_276430

编辑：Jan 2017-8-2

在 MATLAB Online 中打开

A = [2,5,7]               % Row vector
B = [2,7,9].'             % Column vector
C = A - B                 % Since R2016b
C = bsxfun(@minus, A, B)  % <= 2016a