MATLAB Data Types: Understanding Different Data Types in MATLAB, Summaries of Mathematics

Download MATLAB Data Types: Understanding Different Data Types in MATLAB and more Summaries Mathematics in PDF only on Docsity! 10/31/21, 4:15 PM MATLAB - Data Types MATLAB - Data Types MATLAB does not require any type declaration or dimension statements. Whenever MATLAB encounters a new variable name, it creates the variable and allocates appropriate memory space. If the variable already exists, then MATLAB replaces the original content with new content and allocates new storage space, where necessary. For example, Total = 42 The above statement creates a 1-by-1 matrix named Total’ and stores the value 42 in it. Data Types Available in MATLAB MATLAB provides 15 fundamental data types. Every data type stores data that is in the form of a matrix or array. The size of this matrix or array is a minimum of O-by-O and this can grow up toa matrix or array of any size. The following table shows the most commonly used data types in MATLAB - https://www.tutorialspoint.com/matlab/matlab_data_types.htm 118: 10/31/21, 4:15 PM Sr.No. 4 10 11 MATLAB - Data Types Data Type & Description int8 8-bit signed integer uint8 8-bit unsigned integer inti6 16-bit signed integer uint16 16-bit unsigned integer int32 32-bit signed integer uint32 32-bit unsigned integer int64 64-bit signed integer uint64 64-bit unsigned integer single single precision numerical data double double precision numerical data logical https://www.tutorialsp oint.com/matlab/matlab_data_types.htm 28 10/31/21, 4:15 PM Function char int2str mat2str num2str str2double str2num native2unicode unicode2native base2dec bin2dec dec2base dec2bin dec2hex hex2dec hex2num num2hex cell2mat cell2struct cellstr mat2cell num2cell struct2cell MATLAB - Data Types Purpose Convert to character array (string) Convert integer data to string Convert matrix to string Convert number to string Convert string to double-precision value Convert string to number Convert numeric bytes to Unicode characters Convert Unicode characters to numeric bytes Convert base N number string to decimal number Convert binary number string to decimal number Convert decimal to base N number in string Convert decimal to binary number in string Convert decimal to hexadecimal number in string Convert hexadecimal number string to decimal number Convert hexadecimal number string to double-precision number Convert singles and doubles to IEEE hexadecimal strings Convert cell array to numeric array Convert cell array to structure array Create cell array of strings from character array Convert array to cell array with potentially different sized cells Convert array to cell array with consistently sized cells Convert structure to cell array Determination of Data Types https://www.tutorialsp oint.com/matlab/matlab_data_types.htm 518 10/31/21, 4:15 PM MATLAB - Data Types MATLAB provides various functions for identifying data type of a variable. Following table provides the functions for determining the data type of a variable — Function is isa iscell iscellstr ischar isfield isfloat ishghandle isinteger isjava islogical isnumeric isobject isreal isscalar isstr isstruct isvector class validateattributes whos Example Purpose Detect state Determine if input is object of specified class Determine whether input is cell array Determine whether input is cell array of strings Determine whether item is character array Determine whether input is structure array field Determine if input is floating-point array True for Handle Graphics object handles Determine if input is integer array Determine if input is Java object Determine if input is logical array Determine if input is numeric array Determine if input is MATLAB object Check if input is real array Determine whether input is scalar Determine whether input is character array Determine whether input is structure array Determine whether input is vector Determine class of object Check validity of array List variables in workspace, with sizes and types https://www.tutorialsp oint.com/matlab/matlab_data_types.htm 6/8 10/31/21, 4:15 PM MATLAB - Data Types Create a script file with the following code - x=3 isinteger(x) isfloat(x) isvector(x) isscalar(x) isnumeric(x) x = 23.54 isinteger(x) isfloat(x) isvector(x) isscalar(x) isnumeric(x) x = [1 2 3] isinteger(x) isfloat(x) isvector(x) isscalar(x) x = ‘Hello’ isinteger(x) isfloat(x) isvector(x) isscalar(x) isnumeric(x) When you run the file, it produces the following result - ans = ans = ans = ans = PRPRRO ans = x = 23.540 ans = ans = ans = ans = PRRRO ans = https://www.tutorialsp oint.com/matlab/matlab_data_types.htm 718