Coding bug - IF statement

I am working on a code right now where I need to compare a particular column of a matrix using IF statement. For some reason it wasn't working so I tried something simpler -

------

a=[1;0;0]

b=[0;0;1]

if a~=b

disp("hfsdfsdkhl")

end

-----

I am relatively new on MATLAB and dont get why the IF statement doesnot satisfy. This would not work either. Can someone help, please.

Answer 1

[Ameer Hamza]

Comparing arrays like this does not work properly with the if-else block. See the output of your comparison

>> a=[1;0;0]
b=[0;0;1]
a =
     1
     0
     0
b =
     0
     0
     1
>> a~=b
ans =
  3×1 logical array
   1
   0
   1

It is a 3 element vector. You can use isequal() to see if all elements are equal or not

a=[1;0;0];
b=[0;0;1];
if ~isequal(a,b)
        disp("hfsdfsdkhl")
end

You can also use

any(a~=b)
% or
all(a==b)

[Anamil Mehta]

That makes sense! Thank you!

[Ameer Hamza]

I am glad to be of help!