How to convert a string vector into title case in R?

R ProgrammingServer Side ProgrammingProgramming

We cannot be sure about the data characteristics we get for analysis and mostly it is not well organised, thus, the first task would be to make it more organised. The string values not in title case should also be taken care of if it is especially supposed to be in title case. For this purpose, we can str_to_title function of stringr package.

Example1

Live Demo

> x1<-sample(c("india","indonesia","russia","canada","united kingdom"),100,replace=TRUE)
> x1

Output

[1] "india" "united kingdom" "indonesia" "canada"
[5] "canada" "india" "united kingdom" "canada"
[9] "indonesia" "united kingdom" "indonesia" "canada"
[13] "russia" "indonesia" "canada" "russia"
[17] "united kingdom" "russia" "russia" "india"
[21] "united kingdom" "india" "india" "united kingdom"
[25] "united kingdom" "india" "united kingdom" "canada"
[29] "united kingdom" "indonesia" "united kingdom" "canada"
[33] "canada" "russia" "united kingdom" "united kingdom"
[37] "indonesia" "united kingdom" "united kingdom" "indonesia"
[41] "indonesia" "canada" "india" "united kingdom"
[45] "india" "india" "india" "indonesia"
[49] "united kingdom" "canada" "indonesia" "india"
[53] "canada" "canada" "india" "india"
[57] "indonesia" "canada" "canada" "indonesia"
[61] "united kingdom" "indonesia" "india" "india"
[65] "canada" "india" "canada" "canada"
[69] "india" "india" "united kingdom" "russia"
[73] "united kingdom" "canada" "canada" "indonesia"
[77] "indonesia" "india" "india" "india"
[81] "india" "india" "india" "india"
[85] "united kingdom" "canada" "indonesia" "india"
[89] "indonesia" "canada" "indonesia" "russia"
[93] "india" "india" "canada" "indonesia"
[97] "united kingdom" "indonesia" "united kingdom" "russia"

Loading stringr package and converting values in x1 to title case −

Example

> library(stringr)
> str_to_title(x1)

Output

[1] "India" "United Kingdom" "Indonesia" "Canada"
[5] "Canada" "India" "United Kingdom" "Canada"
[9] "Indonesia" "United Kingdom" "Indonesia" "Canada"
[13] "Russia" "Indonesia" "Canada" "Russia"
[17] "United Kingdom" "Russia" "Russia" "India"
[21] "United Kingdom" "India" "India" "United Kingdom"
[25] "United Kingdom" "India" "United Kingdom" "Canada"
[29] "United Kingdom" "Indonesia" "United Kingdom" "Canada"
[33] "Canada" "Russia" "United Kingdom" "United Kingdom"
[37] "Indonesia" "United Kingdom" "United Kingdom" "Indonesia"
[41] "Indonesia" "Canada" "India" "United Kingdom"
[45] "India" "India" "India" "Indonesia"
[49] "United Kingdom" "Canada" "Indonesia" "India"
[53] "Canada" "Canada" "India" "India"
[57] "Indonesia" "Canada" "Canada" "Indonesia"
[61] "United Kingdom" "Indonesia" "India" "India"
[65] "Canada" "India" "Canada" "Canada"
[69] "India" "India" "United Kingdom" "Russia"
[73] "United Kingdom" "Canada" "Canada" "Indonesia"
[77] "Indonesia" "India" "India" "India"
[81] "India" "India" "India" "India"
[85] "United Kingdom" "Canada" "Indonesia" "India"
[89] "Indonesia" "Canada" "Indonesia" "Russia"
[93] "India" "India" "Canada" "Indonesia"
[97] "United Kingdom" "Indonesia" "United Kingdom" "Russia"

Example2

Live Demo

> x2<-sample(c("hot","cold","mild cold","mild hot"),100,replace=TRUE)
> x2

Output

[1] "mild cold" "hot" "cold" "mild hot" "mild cold" "mild cold"
[7] "mild hot" "hot" "mild hot" "hot" "mild hot" "mild hot"
[13] "cold" "mild hot" "mild hot" "mild cold" "cold" "cold"
[19] "mild hot" "mild cold" "hot" "cold" "mild cold" "cold"
[25] "cold" "cold" "mild hot" "mild cold" "hot" "hot"
[31] "cold" "cold" "hot" "cold" "hot" "mild cold"
[37] "cold" "hot" "mild cold" "mild hot" "hot" "hot"
[43] "cold" "mild hot" "mild hot" "mild cold" "cold" "mild hot"
[49] "mild hot" "mild hot" "mild hot" "mild cold" "mild cold" "hot"
[55] "cold" "cold" "hot" "cold" "hot" "mild cold"
[61] "cold" "mild hot" "cold" "hot" "mild hot" "hot"
[67] "cold" "mild hot" "mild hot" "cold" "hot" "mild hot"
[73] "mild hot" "mild cold" "mild cold" "mild cold" "mild hot" "mild hot"
[79] "hot" "cold" "mild hot" "cold" "mild hot" "hot"
[85] "cold" "mild cold" "hot" "hot" "hot" "hot"
[91] "mild cold" "cold" "cold" "mild hot" "hot" "hot"
[97] "mild cold" "mild hot" "hot" "cold"

Example

> str_to_title(x2)

Output

[1] "Mild Cold" "Hot" "Cold" "Mild Hot" "Mild Cold" "Mild Cold"
[7] "Mild Hot" "Hot" "Mild Hot" "Hot" "Mild Hot" "Mild Hot"
[13] "Cold" "Mild Hot" "Mild Hot" "Mild Cold" "Cold" "Cold"
[19] "Mild Hot" "Mild Cold" "Hot" "Cold" "Mild Cold" "Cold"
[25] "Cold" "Cold" "Mild Hot" "Mild Cold" "Hot" "Hot"
[31] "Cold" "Cold" "Hot" "Cold" "Hot" "Mild Cold"
[37] "Cold" "Hot" "Mild Cold" "Mild Hot" "Hot" "Hot"
[43] "Cold" "Mild Hot" "Mild Hot" "Mild Cold" "Cold" "Mild Hot"
[49] "Mild Hot" "Mild Hot" "Mild Hot" "Mild Cold" "Mild Cold" "Hot"
[55] "Cold" "Cold" "Hot" "Cold" "Hot" "Mild Cold"
[61] "Cold" "Mild Hot" "Cold" "Hot" "Mild Hot" "Hot"
[67] "Cold" "Mild Hot" "Mild Hot" "Cold" "Hot" "Mild Hot"
[73] "Mild Hot" "Mild Cold" "Mild Cold" "Mild Cold" "Mild Hot" "Mild Hot"
[79] "Hot" "Cold" "Mild Hot" "Cold" "Mild Hot" "Hot"
[85] "Cold" "Mild Cold" "Hot" "Hot" "Hot" "Hot"
[91] "Mild Cold" "Cold" "Cold" "Mild Hot" "Hot" "Hot"
[97] "Mild Cold" "Mild Hot" "Hot" "Cold"

Example3

Live Demo

> x3<-sample(c("tutorialspoint is an e-learning portal","they have courses","pdf documents","different tutorials"),30,replace=TRUE)
> x3

Output

[1] "they have courses"
[2] "they have courses"
[3] "different tutorials"
[4] "pdf documents"
[5] "different tutorials"
[6] "tutorialspoint is an e-learning portal"
[7] "they have courses"
[8] "they have courses"
[9] "pdf documents"
[10] "they have courses"
[11] "different tutorials"
[12] "pdf documents"
[13] "different tutorials"
[14] "pdf documents"
[15] "they have courses"
[16] "tutorialspoint is an e-learning portal"
[17] "they have courses"
[18] "pdf documents"
[19] "pdf documents"
[20] "different tutorials"
[21] "they have courses"
[22] "pdf documents"
[23] "they have courses"
[24] "tutorialspoint is an e-learning portal"
[25] "they have courses"
[26] "pdf documents"
[27] "they have courses"
[28] "pdf documents"
[29] "they have courses"
[30] "different tutorials"

Example

> str_to_title(x3)

Output

[1] "They Have Courses"
[2] "They Have Courses"
[3] "Different Tutorials"
[4] "Pdf Documents"
[5] "Different Tutorials"
[6] "Tutorialspoint Is An E-Learning Portal"
[7] "They Have Courses"
[8] "They Have Courses"
[9] "Pdf Documents"
[10] "They Have Courses"
[11] "Different Tutorials"
[12] "Pdf Documents"
[13] "Different Tutorials"
[14] "Pdf Documents"
[15] "They Have Courses"
[16] "Tutorialspoint Is An E-Learning Portal"
[17] "They Have Courses"
[18] "Pdf Documents"
[19] "Pdf Documents"
[20] "Different Tutorials"
[21] "They Have Courses"
[22] "Pdf Documents"
[23] "They Have Courses"
[24] "Tutorialspoint Is An E-Learning Portal"
[25] "They Have Courses"
[26] "Pdf Documents"
[27] "They Have Courses"
[28] "Pdf Documents"
[29] "They Have Courses"
[30] "Different Tutorials"
raja
Published on 05-Jan-2021 06:08:33
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