Combine strings - MATLAB append (2024)

Create two strings.

str1 = "Good";str2 = "Morning";

Combine them using the append function.

str = append(str1,str2)

str = "GoodMorning"

To add a space between the input strings, specify a space character as another input argument.

str = append(str1,' ',str2)

str = "Good Morning"

As an alternative, you can use the plus operator to combine strings.

str = str1 + ' ' + str2

str = "Good Morning"

However, the best practice is to use append when you do not know whether the input arguments are strings, character vectors, or cell arrays of character vectors.

Create two character vectors, with the first character vector having a trailing whitespace character.

chr1 = 'Hello ';chr2 = 'World';

Combine them into one character vector.

chr3 = append(chr1,chr2)

chr3 = 'Hello World'

The append function always preserves trailing whitespace characters, unlike the strcat function. (strcat removes trailing whitespace characters from character vectors.)

chr4 = strcat(chr1,chr2)

chr4 = 'HelloWorld'

You can combine string arrays or cell arrays of character vectors, element by element. Also, you can append a single piece of text to the elements of an input array.

Create an array of file names.

names = ["data" "report" "slides"]

names = 1x3 string "data" "report" "slides"

Create an array of file extension names, with a different extension for each element of names.

ext = [".xlsx" ".docx" ".pptx"]

ext = 1x3 string ".xlsx" ".docx" ".pptx"

Combine the file names and extensions.

str1 = append(names,ext)

str1 = 1x3 string "data.xlsx" "report.docx" "slides.pptx"

To append the same extension to each name, use a character vector or a string scalar.

str2 = append(names,'.mat')

str2 = 1x3 string "data.mat" "report.mat" "slides.mat"

The append function supports implicit expansion of arrays. For example, you can combine strings from a column vector and a row vector to form a two-dimensional string array.

Create a column vector of strings. Then create a row vector.

str1 = ["A";"B";"C"]

str1 = 3x1 string "A" "B" "C"

str2 = ["1" "2" "3" "4"]

str2 = 1x4 string "1" "2" "3" "4"

Combine str1 and str2.

str = append(str1,str2)

str = 3x4 string "A1" "A2" "A3" "A4" "B1" "B2" "B3" "B4" "C1" "C2" "C3" "C4"