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Comparing a value against a set of values

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t4741
t4741 2019-9-10
回答： Bruno Luong 2019-9-10
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?

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回答（2 个）

Bruno Luong
Bruno Luong 2019-9-10
if any(A,3)
% ...
end
Raj
Raj 2019-9-10
编辑：Raj 2019-9-10
A=rand(1,1,n) % Define your matrix here
B=nonzeros(A);
if isempty(B)
%%Do nothing
else
%%Run command here
end
  2 个评论
Andrei Bobrov
Andrei Bobrov 2019-9-10
A=rand(1,1,n) % Define your matrix here
if all(A)
%%Run command here
end
Raj
Raj 2019-9-10
Obviously this is a better solution. Thanks!

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