r - Assigning labels to values -

this question has answer here:

• match values in data frame values in data frame , replace former corresponding pattern other data frame 2 answers

i have dataset numbers 1:70 correspond neighborhood name within city. data set so:

    date | area | count    04/16    1       12    04/16    1       1    05/16    2       3    06/16    3       10 

i have dataframe area number , corresponding area name.

number | name   1       franklin   2       state 

how can assign area number value corresponding name without having type out each number , name?

you can match

## data dat = read.table(text="   date  area  count    04/16    1       12    04/16    1       1    05/16    2       3    06/16    3       10", header=true, stringsasfactors=false)  areas = read.table(text="number  name   1       franklin   2       state", header=true, stringsasfactors=false)  areas$name[match(dat$area, areas$number)] [1] "franklin" "franklin" "state"    na