I have two 1x128 matrices. I want to substract them, but only for specific columns (For examples for columns 1 to 50 and 90 to 128.

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Stephen Jeffreys
Stephen Jeffreys 2018-3-5
回答： elham kreem 2018-3-6
I have two 1x128 matrices (data1 and data2). I want to subtract data2 from data1, but only for specific columns (For examples columns 1 to 50 and 90 to 128. And then store this as data3 as a new 1x128 matrix. Can anyone help me please?

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回答（2 个）

Guillaume
Guillaume 2018-3-5
data3 = data1;
data3(:, [1:50, 90:128]) = data1(:, [1:50, 90:128]) - data2(:, [1:50, 90:128]);
or the other way round:
data3 = data1 - data2;
data3(:, 51:89) = data1;
elham kreem
elham kreem 2018-3-6
let :
a=1:128
b= 2: 129
z= b(1, [1:50,90:128]) - a(1,[1:50,90:128])

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