/R/Collapse text by group in dataframe r

Collapse text by group in dataframe r

# You want to aggregate text by group
df <- read.table(header=T, text="
group text
a a1
a a2
a a3
b b1
b b2
c c1
c c2
c c3
")

aggregate(df$text, list(df$group), paste, collapse="")
##   Group.1      x
## 1       a a1a2a3
## 2       b   b1b2
## 3       c c1c2c3

Source: stackoverflow.com

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