MATLAB常用命令大全：编程必备指令速查

MATLAB中命令窗口和编辑窗口中常用的命令

MATLAB2016a的帮助系统

在MATLAB命令行窗口中，可以通过一些命令来获取纯文本的帮助 信息 。包括：

help、lookfor、which、doc、get、type

help命令常用的调用方式为：

help FUN

执行该命令可以查询有关于FUN函数的使用信息。例如要查询了解sin函数的使用方法，可以在命令行中输入一下代码：

>> help sin
 sin    Sine of argument in radians.
    sin(X) is the sine of the elements of X.

    See also asin, sind.

    sin 的参考页
    名为 sin 的其他函数

显示的帮助文档介绍了sin函数的主要功能、调用格式及相关函数的 链接  

lookfor命令常用的调用方式为：

lookfor topic
lookfor topic -all

执行该命令可以按照指定的关键字查找所有相关的M文件。例如：

>> lookfor inverse
ifft                           - Inverse discrete Fourier transform.
ifft2                          - Two-dimensional inverse discrete Fourier transform.
ifftn                          - N-dimensional inverse discrete Fourier transform.
ifftshift                      - Inverse FFT shift.
acos                           - Inverse cosine, result in radians.
acosd                          - Inverse cosine, result in degrees.
acosh                          - Inverse hyperbolic cosine.
acot                           - Inverse cotangent, result in radian.
acotd                          - Inverse cotangent, result in degrees.
acoth                          - Inverse hyperbolic cotangent.
acsc                           - Inverse cosecant, result in radian.
acscd                          - Inverse cosecant, result in degrees.
acsch                          - Inverse hyperbolic cosecant.
asec                           - Inverse secant, result in radians.
asecd                          - Inverse secant, result in degrees.
asech                          - Inverse hyperbolic secant.
asin                           - Inverse sine, result in radians.
asind                          - Inverse sine, result in degrees.
asinh                          - Inverse hyperbolic sine.
atan                           - Inverse tangent, result in radians.
atan2                          - Four quadrant inverse tangent.
atan2d                         - Four quadrant inverse tangent, result in degrees.
atand                          - Inverse tangent, result in degrees.
atanh                          - Inverse hyperbolic tangent.
invhilb                        - Inverse Hilbert matrix.
ipermute                       - Inverse permute array dimensions.
inv                            - Matrix inverse.
pinv                           - Pseudoinverse.
betaincinv                     - Inverse incomplete beta function.
erfcinv                        - Inverse complementary error function.
erfinv                         - Inverse error function.
gammaincinv                    - Inverse incomplete gamma function.
quatinv                        - Calculate the inverse of a quaternion.
revgeneticcode                 - creates a structure of inverse mappings for the genetic code.
qfuncinv                       - Inverse Q function.
dspblkistfft                   - Mask dynamic dialog function for inverse STFFT block
dspblkpinv                     - DSP System Toolbox Pseudo Inverse block helper function.
cvtree                         - Convert an inverse discount tree to an interest rate tree.
inverse_cordic_growth_constant - Kn = INVERSE_CORDIC_GROWTH_CONSTANT(NITER) returns the inverse of the 
cordicatan2                    - CORDIC-based four quadrant inverse tangent.
invkine                        - Inverse kinematics of a robot arm.
hdlinvsinc                     - HDL Inverse Sinc Filter
idct2                          - 2-D inverse discrete cosine transform.
ifanbeam                       - Inverse fan-beam transform.
iradon                         - Inverse Radon transform.
tforminv                       - Apply inverse spatial transformation.
conformalInverse               - Inverse conformal transformation.
conformalInverseClip           - Inverse conformal transformation with clipping.
projinv                        - Inverse map projection using PROJ.4 library
netinv                         - Inverse transfer function.
dnetinv                        - Inverse transfer derivative function.
idst                           - Inverse discrete sine transform.
acde                           - Inverse of cd elliptic function.
asne                           - Inverse of sn elliptic function.
icceps                         - Inverse complex cepstrum.
idct                           - Inverse discrete cosine transform.
ifwht                          - Fast Inverse Discrete Walsh-Hadamard Transform
is2rc                          - Convert inverse sine parameters to reflection coefficients.
rc2is                          - Convert reflection coefficients to inverse sine parameters.
unshiftdata                    - The inverse of SHIFTDATA.
betainv                        - Inverse of the beta cumulative distribution function (cdf).
binoinv                        - Inverse of the binomial cumulative distribution function (cdf).
chi2inv                        - Inverse of the chi-square cumulative distribution function (cdf).
evinv                          - Inverse of the extreme value cumulative distribution function (cdf).
expinv                         - Inverse of the exponential cumulative distribution function.
finv                           - Inverse of the F cumulative distribution function.
gaminv                         - Inverse of the gamma cumulative distribution function (cdf).
geoinv                         - Inverse of the geometric cumulative distribution function.
gevinv                         - Inverse of the generalized extreme value cumulative distribution function (cdf).
gpinv                          - Inverse of the generalized Pareto cumulative distribution function (cdf).
hygeinv                        - Inverse of the hypergeometric cumulative distribution function (cdf).
icdf                           - Inverse cumulative distribution function for a specified distribution.
invpred                        - Inverse prediction for simple linear regression.
iwishrnd                       - Generate inverse Wishart random matrix
logninv                        - Inverse of the lognormal cumulative distribution function (cdf).
nbininv                        - Inverse of the negative binomial cumulative distribution function (cdf).
ncfinv                         - Inverse of the noncentral F cumulative distribution function (cdf).
nctinv                         - Inverse of the noncentral T cumulative distribution function (cdf).
ncx2inv                        - Inverse of the non-central chi-square cdf.
norminv                        - Inverse of the normal cumulative distribution function (cdf).
poissinv                       - Inverse of the Poisson cumulative distribution function (cdf).
raylinv                        - Inverse of the Rayleigh cumulative distribution function (cdf).
tinv                           - Inverse of Student's T cumulative distribution function (cdf).
unidinv                        - Inverse of uniform (discrete) distribution function.
unifinv                        - Inverse of uniform (continuous) distribution function.
wblinv                         - Inverse of the Weibull cumulative distribution function (cdf).
HilbertMatrixExample           - Hilbert Matrices and Their Inverses
icwtft                         - Inverse continuous wavelet transform using FFT.
icwtlin                        - Inverse continuous wavelet transform using linear scales.
idddtree                       - Inverse Real and Complex Double and Double-Density 
idddtree2                      - Inverse Real and Complex Double and Double-Density 
idwt                           - Single-level inverse discrete 1-D wavelet transform.
idwt2                          - Single-level inverse discrete 2-D wavelet transform.
idwt3                          - Single-level inverse discrete 3-D wavelet transform.
ilwt                           - Inverse 1-D lifting wavelet transform.
ilwt2                          - Inverse 2-D lifting wavelet transform.
imodwpt                        - Inverse maximal overlap discrete wavelet packet transform
imodwt                         - Inverse maximal overlap discrete wavelet transform.
indwt                          - Inverse nondecimated 1-D wavelet transform.
indwt2                         - Inverse nondecimated 2-D wavelet transform.
instdfft                       - Inverse non-standard 1-D fast Fourier transform.
iswt                           - Inverse discrete stationary wavelet transform 1-D.
iswt2                          - Inverse discrete stationary wavelet transform 2-D.
iwsst                          - Inverse Wavelet Synchrosqueezed Transform

通过 Demos  演示

在MATLAB命令行中输入以下命令：

demos

通过视频可以更加直观、快速的进行学习

帮助导航浏览器

帮助导航浏览器是MATLAB专门提供的一个独立的帮助子系统，该系统包含的所有帮助文件都存储在MATLAB安装的目录下的help子目录下。可以通过以下两种命令方式来打开帮助导航浏览器：

helpbrowser
%or
doc


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