replace find instruction for more fast precedure

Felipe Vidal

2016 10 25

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I have a very long vector close to 100.000 values, well I need to know wich of them are == x, but "find" instruction it´s very delayded,¿How can I get fast speed or replace find ?

But I need the pointers of vector, not values!

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回答（1 个）

Adam 2016-10-25

在 MATLAB Online 中打开

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myVec( myVec == x );

gives you a boolean indicator array of all those that match the expression, but it depends what you want to do with the information as to how best to use that.

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Felipe Vidal 2016-10-27

I find the problem, if you give a column vector to function find, it takes alot of time to run, but if you give a row vector, it runs efficiently. I dont know why.

Tanks for your answer.

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