Comparing a value against a set of values

I have a 1x1xn array of numbers that range from 0-255 (RGB), where n can be any number. Let's call it data.

I want to check if all the values of data are zero. If any of them are non-zero i want it to run a given command, and if they are all zero then I want it to not run the command

How can i do this?

Answer 1

[Bruno Luong]

if any(A,3)
   % ...
end

Answer 2

[Raj]

A=rand(1,1,n) % Define your matrix here
B=nonzeros(A);
if isempty(B)
%%Do nothing
else
%%Run command here
end

[Andrei Bobrov]

A=rand(1,1,n) % Define your matrix here
if all(A)
    %%Run command here
end

[Raj]

Obviously this is a better solution. Thanks!