Searching for specific names within lines

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I have a database about parties and on one line I have a series of acronym like: PT/PSDC/PCB/PMDB. How do I select only the PMDB within those lines?

r

  • You need to post a sample from your database, so we can understand what kind of data we’re dealing with, without that information there’s no way to do anything.

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You can do it:

partido<-c('PT/PSDC/PCB/PMDB')

library(stringr)
str_extract(partido,'PMDB')

This function extracts the first element found (in this case, only a unit of PMDB). If there are several PMDBs inside the vector, use str_extract_all to extract all acronyms PMDB:

str_extract_all(partido,'PMDB')

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