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How to check multiple values of one variable in if statement

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Faranak Sharifi-Babaki
评论： Faranak Sharifi-Babaki 2019-2-1
Hi,
I am writing a piece of code that checks for zero columns in a matrix. It stores all zero columns it finds in the value col. I later want to check the values for variable col in different if statements. However, when I write it like this it runs into errors:
%find all columns where there is zero vector
col = find(all(R == 0))
if col == [1 2 3]
//does something
end
This code works fine when col has 3 values, but when it has 4 values like col = 1 2 3 4, it gives the error: Matrix dimensions must agree. Is there another way I could check for multiple col values? Thanks!!

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采纳的回答

Bob Thompson
Bob Thompson 2019-2-1
编辑：Bob Thompson 2019-2-1
You should just be able to index your if condition.
if col(1:3) == [1 2 3]
// do something
end

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