Adding a "0/1" factor based on another variable -- Doing a proper reprex

dplyr::case_when would be a good choice for this. The way to use this is like so:

data %>% 
        newvar = case_when(
            x == y ~ 'result1',
            x != y ~ 'result2'

If you are able to provide a reprex of your data, we can help you dig into extracting the e and c characters.

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