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| Elementary Matrices and Arrays
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| blkdiag |
Construct a block diagonal matrix from input arguments |
| eye |
Identity matrix |
| linspace |
Generate linearly spaced vectors |
| logspace |
Generate logarithmically spaced vectors |
| numel |
Number of elements in a matrix or cell array |
| ones |
Create an array of all ones |
| rand |
Uniformly distributed random numbers and arrays |
| randn |
Normally distributed random numbers and arrays |
| zeros |
Create an array of all zeros |
| : (colon) |
Regularly spaced vector |
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| Special Variables and Constants
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| ans |
The most recent answer |
| computer |
Identify the computer on which MATLAB is running |
| eps |
Floating-point relative accuracy |
| i |
Imaginary unit |
| Inf |
Infinity |
| inputname |
Input argument name |
| j |
Imaginary unit |
| NaN |
Not-a-Number |
| nargin, nargout |
Number of function arguments |
| nargoutchk |
Validate number of output arguments |
| pi |
Ratio of a circle's circumference to its diameter, |
| realmax |
Largest positive floating-point number |
| realmin |
Smallest positive floating-point number |
| varargin, varargout |
Pass or return variable numbers of arguments |
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| Time and Dates |
| calendar |
Calendar |
| clock |
Current time as a date vector |
| cputime |
Elapsed CPU time |
| date |
Current date string |
| datenum |
Serial date number |
| datestr |
Date string format |
| datevec |
Date components |
| eomday |
End of month |
| etime |
Elapsed time |
| now |
Current date and time |
| tic, toc |
Stopwatch timer |
| weekday |
Day of the week |
|
| Matrix Manipulation |
| cat |
Concatenate arrays |
| diag |
Diagonal matrices and diagonals of a matrix |
| fliplr |
Flip matrices left-right |
| flipud |
Flip matrices up-down |
| repmat |
Replicate and tile an array |
| reshape |
Reshape array |
| rot90 |
Rotate matrix 90 degrees |
| tril |
Lower triangular part of a matrix |
| triu |
Upper triangular part of a matrix |
| : (colon) |
Index into array, rearrange array |
|
| Vector Functions |
| cross |
Vector cross product |
| intersect |
Set intersection of two vectors |
| ismember |
Detect members of a set |
| setdiff |
Return the set difference of two vector |
| setxor |
Set exclusive or of two vectors |
| union |
Set union of two vectors |
| unique |
Unique elements of a vector |
