matlab primary

command

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System Command

command	Features	Case
date	Displays the current date	ans = 20-Jul-2019
what	The current folder file matlab
type	The contents of the file	type CV.m
diary	Closed / open log file	Not then generate a diary
wklread	Read .wkl file

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Session management command

command	Explanation	example
clear	Clear Variable	clear A; no parameters will be emptied variable space
exist	Check the file or variable exists
lookfor	Search Help keyword entry

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O command

disp, fscanf, format, fprintf, input, ;

command	Explanation	example
%s	String
%d	Integer value
%f	Float
%e	Float scientific notation
%g	The most compact format in the form

format

short(2), long(16), + (e), bank(2), + (+, - ,0 ), rat(分数）， compact(禁止一些换行符)， loose(重置较为不紧凑的显示模式) 

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Vector, matrix, an array of command

command	Explanation	example
cat	Connection array	cat(dim, A1, A2);%dim:维度
find	Finds the index of non-zero elements	？
logspace	Logarithmically spaced vector	？
reshape	Change shape	reshape(1:16, [4 4])
eye	Matrix	eye(4); eye(4, 2)
ones	Array 1	ones(4)
zeros	0 array
rand	(0, 1) uniform random array
randn	(4,4) Normal random array
cross	Cross product	cross ([1,1,0], [0,1,1]) % 1 -1 1
dot	Dot product	ab = Σ (ai * bi)
the	Determinant
inv	The inverse matrix
pinv	Pseudo-inverse matrix	？
rank	rank
rref	Into row echelon form
cell	Cell Array	cell（2）？
celldisp	The display unit cell array	？
cell plot	The display unit cell array	？
num2cell	Array ==> cell array	？
deal	Input and output matching list	？
iscell	Determining a cell array

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Drawing commands

command	Explanation	example
fplot	Smart Plot	？
print	Print the drawing to a file	？
axes	Creating axis object	？
close (all)	Close graph	？
figure	Open new graphical window	？
gtext	Enable label position by mouse	？
text	FIG string placed	？
hold	Freeze the current plot	非 hold on
subplot	Multi-map
refresh	Redraw the current graphics window	？
set	Object attribute axis	？
bar	Bar chart	？
loglog	Logging table	？
polar	Polar coordinates	？
semilogx (y)	Number of horizontal (vertical) coordinates	？
stairs	Ladder	？
stem	Figure stems	？

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Vector splicing

水平：c = [c1, c2]; 垂直：c = [c1: c2]; 

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Array Functions

function	Explanation	example
ndims	dimension
give name	The number of elements
blkdiag	Construction diagonal matrix	blk(1, 2, 3)
diag	Made diagonal
circshift	Cyclic shift	circshift (A, N)% N: the number of rows moved
flipdim	Flip along the dimension	flipdim(A, dim)
flippud	Flip down
flipplr	From left to right Flip
repmat	平铺	repmat(A, [M N])
rot90	逆时针旋转90度