Replace Elements in matrix in specific positions

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Pedro R 2019-6-6

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评论： Steven Lord 2019-6-6

Hello, i have 3 matrixes of 15001 elements, A, B and C . What i want is that when A<=1.2 and in the same positions, -0.54<=B<=0.54, the same position D will be 0 , else inmatrix D will be = C.

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回答（1 个）

goerk 2019-6-6

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编辑：goerk 2019-6-6

mask = A<=1.2 && B>-0.54 && B<0.54;
D=zeros(size(C));
D(mask)=C(mask);

Edit:

Range adapted.

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madhan ravi 2019-6-6

Pedro R commented:

sorry, is was -0.54.

Steven Lord 2019-6-6

在 MATLAB Online 中打开

Replace the && in your answer with &. Use && for short-circuiting when the two expressions you're trying to and together are scalars. Use & to and together two arrays element-wise.

% Sample data
A = randn(5);
B = randn(5);
% Will throw an error
mask = A<=1.2 && B>-0.54 && B<0.54;
% Will not throw an error
mask = A<=1.2 & B>-0.54 & B<0.54;