How to convert first letter into capital in R data frame column?

To convert first letter into capital in R data frame column, we can follow the below steps −

• First of all, create a data frame with string column.

• Then, use sub function to convert first letter into capital in string column.

Example

Create the data frame

Let’s create a data frame as shown below −

Names<- sample(c("rahul","rosy","hidayah","seema","john","sarbat","shaun","sam","teena","ila","kunal"),25,replace=TRUE) df<-data.frame(Names) df

Output

On executing, the above script generates the below output(this output will vary on your system due to randomization) −

 Names 1 hidayah 2 sam 3 sam 4 kunal 5 rosy 6 sarbat 7 sam 8 rahul 9 sam 10 shaun 11 ila 12 seema 13 shaun 14 kunal 15 ila 16 sarbat 17 sarbat 18 rosy 19 kunal 20 kunal 21 seema 22 ila 23 rosy 24 seema 25 kunal

Convert first letter into Capital

Using sub function to convert first letter into capital in Names column −

Names<- sample(c("rahul","rosy","hidayah","seema","john","sarbat","shaun","sam","teena","ila","kunal"),25,replace=TRUE) df<-data.frame(Names) df$New_Names<-sub("(.)", "\U\1",df$Names,perl=TRUE) df

Output

   Names  New_Names 1  rahul   Rahul 2  teena   Teena 3  hidayah Hidayah 4  kunal Kunal 5  shaun Shaun 6  sarbat Sarbat 7  teena   Teena 8  john    John 9  ila     Ila 10 ila     Ila 11 rahul   Rahul 12 ila     Ila 13 rahul   Rahul 14 sarbat  Sarbat 15 seema   Seema 16 seema   Seema 17 teena   Teena 18 shaun   Shaun 19 hidayah Hidayah 20 sarbat  Sarbat 21 sarbat  Sarbat 22 teena   Teena 23 seema   Seema 24 ila     Ila 25 sam     Sam