[R] searching for a specific row name in R

[Deepa Maheshvare]

Hello Everyone,

I have a 1000 x 20 matrix. The second column of the matrix has the names of identifiers. How do I check when a certain identifier is present in the set of 1000 identifier names present in the second column. For instance, let the names of identifiers be A1,A2,...A1000. I want to check whether A501 is present .How can this be checked?

Any help will be highly appreciated.


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