MATLAB: Put a space in a text

strcat

If we run the following code we will see that there is no space between 'is' and number '1'. I wonder how I can put a space in a text.

s=strcat('this is ',num2str(1),' my cat')

Best Answer

s=['this is ' num2str(1) ' my cat']

strcat ignores trailing ASCII white space characters and omits all such characters from the output. White space characters in ASCII are space, newline, carriage return, tab, vertical tab, or form-feed characters, all of which return a true response from the MATLAB isspace function. Use the concatenation syntax [s1 s2 s3 ...] to preserve trailing spaces. strcat does not ignore inputs that are cell arrays of strings.

Reference

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MATLAB: Strcat including space (i.e, ‘ ‘)

To include spaces when concatenating character vectors, use square brackets.

a = 'word1';
b = 'word2';
c = [a ' ' b]

The “ strcat ” function ignores trailing whitespace characters in character vectors. However, “strcat” preserves them in cell arrays of character vectors or string arrays.

a = {'word1'};
b = {'word2'};
c = strcat(a,{' '},b)

You also can use the “plus” operator to combine strings. Starting in R2017a, use double quotes to create strings. For more information on strings, see the “ string ” data type.

a = "word1";
b = "word2";
c = a + " " + b

MATLAB: \n or newline doesn’t work

"Do someone know why ?"

The documentation states "For character array inputs, strcat removes trailing ASCII white-space characters: space, tab, vertical tab, newline, carriage return, and form feed." It also suggests the workaround in the nest sentence: "For cell and string array inputs, strcat does not remove trailing white space."

strcat(Equation, {sprintf("\n")}, Equation2)
%                ^             ^ scalar cell array

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MATLAB: Strcat including space (i.e, ‘ ‘)

MATLAB: \n or newline doesn’t work

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