How do I count the number of "0"s in my matrix of 0s and 1s using R?

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I have a 15x15 matrix with strings of "0"s and "1"s. I need to find the number of columns that have only one "0". Note that the variables in the matrix are strings, not numerics

What I have tried:

colSums(m1=="1", na.rm=TRUE)

Posted 13-Mar-22 13:53pm

loop063

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Maciej Los 15-Mar-22 17:23pm

And what is wrong with your code?
[EDIT]
I'm not R specialist, but this seems to be interesting: Count the number of pattern matches in R dataframe column - DataScience Made Simple[^]

Good luck!

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How do I count the number of "0"s in my matrix of 0s and 1s using R?

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How do I count the number of "0"s in my matrix of 0s and 1s using R?

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