Finding ALL the indicies that match a certain value

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Abbi Hashem
Abbi Hashem 2018-12-10
回答： Star Strider 2018-12-10
Suppose I have a variable A= 4
and I have a vector B = [ 3 5 4 6 4 6 7 ]
I want to find the index of B that match A
that is , a vector with [ 3 , 5 ] since they are the third and 5th

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回答（1 个）

Star Strider
Star Strider 2018-12-10
Use the find function:
A = 4;
B = [ 3 5 4 6 4 6 7 ];
idx = find(B == A)
producing:
idx =
3 5

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