190320-Matlab矩阵逐行进行函数运算

​​how to apply a function to all rows in a matrix? [duplicate]​​

tmp.m

• Example1

A = reshape(1:9,3,3)

arrayfun(@(n) myfun(A(n,:)), 1:size(A,1))

function [b] = myfun(data)
b = data(1)+2*data(2)+3*data(3);
end

>> tmp

A =

     1     4     7
     2     5     8
     3     6     9


ans =

    30    36    42

• Example2

A = reshape(1:9,3,3)

b = arrayfun(@(n) myfun1(A(n,:)), 1:size(A,1),'UniformOutput', false)

B = cell2mat(b)

function [c] = myfun1(data1)
c = myfun2(data1);
end


function [d] = myfun2(data2)
d =power(data2,2);
end

>> tmp
   
   A =
   
        1     4     7
        2     5     8
        3     6     9
   
   
   b =
   
     1×3 cell array
   
       {1×3 double}    {1×3 double}    {1×3 double}
   
   
   B =
   
        1    16    49     4    25    64     9    36    81