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发表于 2010-1-21 10:08:15
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>> help ops
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Operators and special characters.3 K( @4 f/ i! d8 r p
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) ` J2 I. m" {9 ?5 }0 i1 S' ?8 h + Plus arith
/ r6 \( Q* C& |) [1 s1 L9 e9 x, l# L - Minus arith
* P& ^, d% L9 J; [8 A$ p5 j2 Y * Matrix multiplication arith7 N) r* b* K- ?0 y! K. p+ k6 ~
.* Array multiplication arith
' w4 K/ p& L% W( M" k5 h0 b ^ Matrix power arith
" x; A9 e1 P7 f, n) P3 q. f .^ Array power arith
, O" @4 ?, P/ s/ y; j5 @& Z4 g, l- K Z4 ?/ _4 H" i/ w& m5 {
\ Backslash or left division slash& h F; @ G* Y' k# T
/ Slash or right division slash
/ D; G. |: n k! f& N4 {" Q% e ./ Array division slash
% o3 c& S H- V2 s$ o kron Kronecker tensor product kron
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: Colon colon3 {: Y; v" i0 l b# n& ~
/ [3 W% n7 e: i; i1 c `( o ( ) Parentheses paren
9 m6 F8 e* j/ v3 ^9 {$ g& X# S0 H [ ] Brackets paren
- m( L& h. ]6 b' c, X, h0 M, w; @$ M3 f# I& `
. Decimal point punct
8 B. t! J, _% G1 i } .. Parent directory punct. _ }0 f' ]; _# j* A- @* U
... Continuation punct7 E. o) w" y9 I: V
, Comma punct/ a1 R/ ^& `( T$ ~* ]
; Semicolon punct
" e' ~& F8 l8 L+ ^4 X % Comment punct
) I: \ y) S: M. J8 k ! Exclamation point punct1 x" V$ w$ u+ t. }7 S
' Transpose and quote punct6 t+ k9 H1 Q* @) b! j' u( s
= Assignment punct
! s# K+ ?3 Q2 Y4 a, ?
/ Y) I3 Y; [# r% Z/ V == Equality relop/ Y; @6 ^$ i' F( p* X" R4 ?
<,> Relational operators relop* i8 B8 {% X! X7 |2 q0 T1 D
& Logical AND relop2 o+ u* ?" I+ [3 h$ S
| Logical OR relop+ I) }' K4 ]/ Y5 C. l
~ Logical NOT relop
2 ?' q- w" n. m xor Logical EXCLUSIVE OR xor. o' w6 n& r- o) J$ K6 m
2 [& x3 b7 F6 N/ E! d0 E Logical characteristics.; ?! N2 Y {1 R6 ?2 ?
exist - Check if variables or functions are defined.- T, ^2 h6 B" t) z5 Q" S
any - True if any element of vector is true.
: A) ?; `6 p3 V8 o. n* T all - True if all elements of vector are true.
& B' ~+ j% {+ v' G find - Find indices of non-zero elements.% B+ _' }5 J5 I' z
isnan - True for Not-A-Number.
; G" g, b0 i; x: I7 c& v M3 E isinf - True for infinite elements.
5 k; T- P; `1 R9 S6 Y4 _) N" { finite - True for finite elements.
0 f- W; X$ `( ?. W isempty - True for empty matrix./ G+ p! a2 T" b" D0 u
isreal - True for real matrix.5 J$ W5 G/ _ H4 [5 J
issparse - True for sparse matrix.
( ?* I) F" S2 x9 u isstr - True for text string.
j& Y1 J T# Y0 f3 i isglobal - True for global variables. |
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