matrix if statement is above .5 then can I re enter it to show .5

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cormac spillane
cormac spillane 2015-4-27
回答： Thorsten 2015-4-27
I have a large matrix(x) and I want to change any value the is above .5 or below -.5 to .5 or -.5 respectively in a certain column(2). any assistance regarding this topic would be greatly appreciated.
regards, cormac

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Guillaume
Guillaume 2015-4-27
I'm sure it's covered in the Getting Started tutorials. It's basic matrix indexing.
A = rand(10, 10)*2-1; %create matrix between -1 to 1, for demo
A(A < -0.5) = -0.5;
A(A > 0.5) = 0.5

更多回答（1 个）

Thorsten
Thorsten 2015-4-27
R = randn(10)/3;
R(R > 0.5) = 0.5;
R(R < -0.5) = -0.5;

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