String Operations Commands blanks Returns a string which consists of n spaces. char Returns a string matrix whose elements are the input arguments, vertically concatenated. deblank Trims trailing whitespaces from strings, matrices and cell arrays. For matrices, trailing whitespaces are stripped from each row to the size of the longest string in the matrix, to make the length of each row consistent. func2str Returns a string containing the name of the functionf. ischar Returns true if the input, s, is a string and false otherwise. isletter Returns a boolean, logical matrix or cell array, whose value(s) are true if the corresponding elements of the input are letters and false, if otherwise. isspace Returns a boolean, logical matrix or cell array, whose value(s) are true if the corresponding elements of the input are whitespaces and false, if otherwise. isstr Returns true if the input, s, is a string and false otherwise. lower Returns a string or cell array where each uppercase character of the input string, matrix or cell array is replaced by the corresponding lowercase character. Non-alphabetic characters in the input are not modified. mat2str Writes the values of a 2D matrix, m, to a string, R. num2str Returns a string or a string array after converting the input x. Input x can be a scalar, complex number, or matrix. An optional argument, precision, can be used to format the output, R, by specifying the number of significant digits. Valid values of R are positive integers. regexp Returns the results after searching for the regular expression or pattern, pattern in the input.s. regexprep Returns the result after replacing the regular expression, pat with rep in the input, src. sprintf Returns a formatted string, based on the format, strformat specified. sscanf Returns result R after reading a formatted string s, specified by template t. str2double Returns a scalar, complex number or matrix, R, after converting the input s. str2func Returns the function handle corresponding to the input string argument s. If an optional second argument called global is given, only global functions are included in the scope of the lookup. str2mat Returns a string matrix, R, whose elements are inputs, s, vertically concatenated. Strings that form the rows R are padded with spaces so that R is valid. str2num Returns a scalar, complex number or matrix, R, after converting the input s. strcat Concatenates inputs s, ... and returns the result, R, which is of type string or cell array. strcmp Performs a case-sensitive comparison of x1 with x2. Returns 1 if the characters compared are identical and 0 otherwise. strcmpi Performs a case-insensitive comparison of x1 with x2. Returns 1 if the characters compared are identical and 0 otherwise. strfind Searches for all instances of the pattern pat in s. Returns a matrix, R, whose elements are indices of occurrences of pat in s. strjoin Returns a string, R, which is the result of concatenating the elements of the cell array of strings, c, with each element separated by the delimiter delim. Delimiter delim is optional and if no value is specified, whitespace is used. strncmp Performs a case-sensitive comparison of the first n characters of x1 with x2. Returns 1 if the characters compared are identical and 0 otherwise. strncmpi Performs a case-insensitive comparison of the first n characters of x1 with x2. Returns 1 if the characters compared are identical and 0 otherwise. strrep Searches and replaces all instances of the pattern pat in s with the new pattern newpat. The output R will be a string or a cell of strings, based on the type of s. strsplit Tokenizes the string s with the given delimiter delim. strtok Splits the string s at the given delimiter delim and returns a cell array whose elements are the substrings of string s. strtrim Trims leading and trailing whitespaces from strings, matrices and cell arrays. For matrices, leading and trailing whitespaces are stripped from each row to the size of the longest string in the matrix, to make the length of each row consistent. strvcat Returns a string matrix whose elements are the input arguments, vertically concatenated. toascii Converts every character in the string, s, to its ASCII equivalent. tolower Returns a string or cell array where each uppercase character of the input string, matrix or cell array is replaced by the corresponding lowercase character. Non-alphabetic characters in the input are not modified. toupper Returns a string or cell array where each lowercase character of the input string, matrix or cell array is replaced by the corresponding uppercase character. Non-alphabetic characters in the input are not modified. upper Returns a string or cell array where each lowercase character of the input string, matrix or cell array is replaced by the corresponding uppercase character. Non-alphabetic characters in the input are not modified.