x := 5 {??? Error: "x" was previously used as a variable, conflicting with its use here as the name of a function or command. See MATLAB Programming, "How MATLAB Recognizes Function Calls That Use Command Syntax" for details. } x = [1 2 3] x = 1 2 3 x [123] {??? Error: "x" was previously used as a variable, conflicting with its use here as the name of a function or command. See MATLAB Programming, "How MATLAB Recognizes Function Calls That Use Command Syntax" for details. } x = [123] x = 123 x = [1,2,3] x = 1 2 3 x = [1 2,3 , 5, , 5] ??? x = [1 2,3 , 5, , 5] | {Error: Expression or statement is incorrect--possibly unbalanced (, {, or [. } x = [1 2,3 , 5, 5, 5] x = 1 2 3 5 5 5 x=5 x = 5 x =5 x = 5 x=5,y = 7 x = 5 y = 7 x=5; x x = 5 x=34; x x = 34 x=y x = 7 x==y ans = 1 namelengthmax ans = 63 marge_simpson = 45 marge_simpson = 45 marge_simpson = 'big blue hair' marge_simpson = big blue hair sqrt(3) ans = 1.7321 sqrt = 5 sqrt = 5 sqrt(3) {??? Index exceeds matrix dimensions. } clear sqrt sqrt(3) ans = 1.7321 sin(.03) ans = 0.029996 sin(pi) ans = 1.2246e-016 cos(0) ans = 1 format long cos(0) ans = 1 format g {??? Error using ==> format Unknown command option. } sin(.03) ans = 0.029995500202496 format short sin(.03) ans = 0.0300 help format FORMAT Set output format. FORMAT with no inputs sets the output format to the default appropriate for the class of the variable. For float variables, the default is FORMAT SHORT. FORMAT does not affect how MATLAB computations are done. Computations on float variables, namely single or double, are done in appropriate floating point precision, no matter how those variables are displayed. Computations on integer variables are done natively in integer. Integer variables are always displayed to the appropriate number of digits for the class, for example, 3 digits to display the INT8 range -128:127. FORMAT SHORT and LONG do not affect the display of integer variables. FORMAT may be used to switch between different output display formats of all float variables as follows: FORMAT SHORT Scaled fixed point format with 5 digits. FORMAT LONG Scaled fixed point format with 15 digits for double and 7 digits for single. FORMAT SHORT E Floating point format with 5 digits. FORMAT LONG E Floating point format with 15 digits for double and 7 digits for single. FORMAT SHORT G Best of fixed or floating point format with 5 digits. FORMAT LONG G Best of fixed or floating point format with 15 digits for double and 7 digits for single. FORMAT SHORT ENG Engineering format that has at least 5 digits and a power that is a multiple of three FORMAT LONG ENG Engineering format that has exactly 16 significant digits and a power that is a multiple of three. FORMAT may be used to switch between different output display formats of all numeric variables as follows: FORMAT HEX Hexadecimal format. FORMAT + The symbols +, - and blank are printed for positive, negative and zero elements. Imaginary parts are ignored. FORMAT BANK Fixed format for dollars and cents. FORMAT RAT Approximation by ratio of small integers. Numbers with a large numerator or large denominator are replaced by *. FORMAT may be used to affect the spacing in the display of all variables as follows: FORMAT COMPACT Suppresses extra line-feeds. FORMAT LOOSE Puts the extra line-feeds back in. Example: format short, pi, single(pi) displays both double and single pi with 5 digits as 3.1416 while format long, pi, single(pi) displays pi as 3.141592653589793 and single(pi) as 3.1415927. format, intmax('uint64'), realmax shows these values as 18446744073709551615 and 1.7977e+308 while format hex, intmax('uint64'), realmax shows them as ffffffffffffffff and 7fefffffffffffff respectively. The HEX display corresponds to the internal representation of the value and is not the same as the hexadecimal notation in the C programming language. See also disp, display, isnumeric, isfloat, isinteger. Overloaded methods: quantizer/format Reference page in Help browser doc format format long g sin(.03) ans = 0.0299955002024957 format long g plus(3,4) ans = 7 3+4 ans = 7 divide(3,4) {??? Undefined function or method 'divide' for input arguments of type 'double'. } divide(120/4) {??? Input argument "bottom" is undefined. Error in ==> divide at 2 a = top/bottom;} divide(120,4) ans = 30 divide(120,4) {??? Error: File: divide.m Line: 2 Column: 9 Unexpected MATLAB expression. } divide(120,4) ans = 30 divide(120,4) a = 30 ans = 30 ans ans = 30 clc ans ans = 30 x = divide(121,3) x = 40.3333333333333 whos Name Size Bytes Class Attributes ans 1x1 8 double answer 1x143 286 char button 1x3 6 char eventdata 0x0 0 double hObject 1x1 8 double handles 1x1 1452 struct last_dir_489231315124 1x105 210 char marge_simpson 1x13 26 char varargin 0x0 0 cell x 1x1 8 double y 1x1 8 double clear x = divide(121,3) x = 40.3333333333333 whos Name Size Bytes Class Attributes x 1x1 8 double M = [1 2 3; 3, -4 pi] M = Columns 1 through 2 1 2 3 -4 Column 3 3 3.14159265358979 M M = Columns 1 through 2 1 2 3 -4 Column 3 3 3.14159265358979 format short M M = 1.0000 2.0000 3.0000 3.0000 -4.0000 3.1416 M = [1 2 3; 3, -4 pi] M = 1.0000 2.0000 3.0000 3.0000 -4.0000 3.1416 M(1,2) ans = 2 M(1,3) ans = 3 M(1,end) ans = 3 M(end,end) ans = 3.1416 diary off