Delete rows in a given array based on values in another array

Hi,

I have two arrays A (179528104x1) and B (1x9700). Here, in the array A, I need to retain only the rows that contain values present in the array B and delete all other rows.

Answer 1

[Star Strider]

Perhaps this —

A = randi(99, 50, 1);

A = 50x1

47 89 42 74 47 16 21 68 21 89

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Abfr = buffer(A,10)                             % Show Everything In 'A'

Abfr = 10x5

47 55 95 81 17 89 95 38 45 86 42 15 10 33 9 74 86 9 6 58 47 66 17 10 69 16 34 65 7 95 21 88 78 62 93 68 51 56 30 7 21 46 52 86 55 89 68 72 93 94

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B = randi(99, 10, 1)

B = 10x1

74 38 92 57 99 97 85 55 73 17

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[ix,v] = ismember(A, B);
C = A(ix)

C = 6x1

74 55 38 17 17 55

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.

[Turbulence Analysis]

Thanks very much! works perfectly!

[Star Strider]

As always, my pleasure!