Replace entire expression that contains a specific string

Question

I have data frame that has a column with large number of file names like:

d <- c(\"harry11_scott80_norm.avi\",\"harry11_norm.avi\",\"harry11_scott80_lpf.         


        

Answer 1

Here's one way

> gsub(".*_scott80_.*", "incongruent", d)
[1] "incongruent"           "harry11_norm.avi"      "incongruent"          
[4] "joel51_lpf.avi"        "rich82_joel51_lpf.avi"

Or with grep

> d[grep("_scott80_", d)] <- "incongruent"
> d
[1] "incongruent"           "harry11_norm.avi"      "incongruent"          
[4] "joel51_lpf.avi"        "rich82_joel51_lpf.avi"

---

To address your edit, I believe this will do it (using | to mean "or")

gsub(".*(_scott80_|_harry11_).*", "incongruent", d)

Of course, you don't have any strings in d that match "_harry11_"