how to multiply a row with 1st and 2nd row of a matrix seperately

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Panda Girl
Panda Girl 2018-12-8
回答： Star Strider 2018-12-8
>> y_0
y_0 =
0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1
>> z
z =
1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0
1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0
I am trying to multiply y_0 with row 1 of z and row 2 of z. but I am not sure how
i tried :z and z: but its giving errors. Kindly help

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回答（2 个）

Cris LaPierre
Cris LaPierre 2018-12-8
You want to use element-wise multiplication.
If you are new to MATLAB, I'd suggest MATLAB Onramp. Chapter 6 talks about performing calculations with arrays.
Star Strider
Star Strider 2018-12-8
One option is to use the bsxfun (link) function:
y_0 = [0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1];
z = [1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0
1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0];
Out = bsxfun(@xor, y_0, z)
producing:
Out =
2×16 logical array
1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

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