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mhkeller/gist:4729318

Forked from abelsonlive/gist:4726453
Created February 7, 2013 07:51
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gistfile1.r
d <- read.csv("all_posts.csv", stringsAsFactors=F)
pattern <- "regex here"
d$guns <- 0
d$guns[grep(pattern, d$text)] <- 1
d_guns <- d[d$guns==1,]
write.csv(d_guns, "gun_posts.csv", row.names=F)
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