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how to merge the matrices in one matrice?

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Ararat Cetinkaya
Ararat Cetinkaya 2020-3-8
关闭： MATLAB Answer Bot 2021-8-20
I want to merge class matrix in one matrix in for loop but it gives error like Unrecognized function or variable 'allclass'.
for d =1:3 ;
class(:,1:3) = [num(num(:,3)==d,1:3)];
allclass= [allclass ; class];
end
  1 个评论
David Hill
David Hill 2020-3-8
An example with your data would be helpful. Look at reshape() function.

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回答（1 个）

Chidvi Modala
Chidvi Modala 2020-3-11
"Unrecognized function or variable 'allclass'" error may occur because allclass variable is not initialized before using it. So, you can initialize "allclass" variable with an empty array. You can make use of the following example
num = [3 2 1;2 2 2; 1 2 3];
allclass = [];
for d =1:3 ;
temp = num(num(:,3)==d,1:3);
allclass= [allclass ; temp];
end

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