fixing an error for calling a variable in an array

Y = [1 7

3 9

11 12

15 18

22 12

12 23

15 19

10 22

17 28

111 123]

z= [ 9 12 18 12 23 19 22 28 123]

for i= 1: length(z)

out(i) = Y(find(Y(:,2) == z(:,i)))

end

this code shows an error while executing (Unable to perform assignment because the left and right sides have a different number of

elements.)

can anyone please fix this error

thanks

Answer 1

[Stephen23]

I suspect that you want something like this:

>> Y = [1,7;3,9;11,12;15,18;22,12;12,23;15,19;10,22;17,28;111,123]
Y =
     1     7
     3     9
    11    12
    15    18
    22    12
    12    23
    15    19
    10    22
    17    28
   111   123
>> z = [9,12,18,12,23,19,22,28,123]
z =
     9    12    18    12    23    19    22    28   123
>> [~,idx] = ismember(z,Y(:,2));
>> out = Y(idx,:)
out =
     3     9
    22    12
    15    18
    22    12
    12    23
    15    19
    10    22
    17    28
   111   123

Using a loop is unlikely to be a neat or efficient solution.