Figure Properties - SERC

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fft 2-752 [6] Oppenheim, A. V. and R. W. Schafer, Discrete-Time Signal Processing, Prentice-Hall, 1989, p. 619. [7] Rader, C. M., “Discrete Fourier Transforms when the Number of Data Samples Is Prime,” Proceedings of the IEEE, Vol. 56, June 1968, pp. 1107-1108.
2fft2 Purpose Two-dimensional discrete Fourier transform Syntax Y = fft2(X) Y = fft2(X,m,n) Description Y = fft2(X) returns the two-dimensional discrete Fourier transform (DFT) of X, computed with a fast Fourier transform (FFT) algorithm. The result Y is the same size as X. Y = fft2(X,m,n) truncates X, or pads X with zeros to create an m-by-n array before doing the transform. The result is m-by-n. Algorithm fft2(X) can be simply computed as Data Type Support fft(fft(X).').' This computes the one-dimensional DFT of each column X, then of each row of the result. The execution time for fft depends on the length of the transform. It is fastest for powers of two. It is almost as fast for lengths that have only small prime factors. It is typically several times slower for lengths that are prime or which have large prime factors. Note You might be able to increase the speed of fft2 using the utility function fftw, which controls how MATLAB optimizes the algorithm used to compute an FFT of a particular size and dimension. fft2 supports inputs of data types double and single. If you call fft2 with the syntax y = fft2(X, ...), the output y has the same data type as the input X. See Also fft, fftn, fftw, fftshift, ifft2 fft2 2-753
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Function Reference Volume 2: F - O
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1 Functions — Categorical List De
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Functions — Categorical List 1 Th
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Desktop Tools and Development Envir
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Desktop Tools and Development Envir
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Mathematics Mathematics Functions f
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Operations and Manipulation : (colo
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Matrix Analysis cond Condition numb
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Trigonometric acos Inverse cosine a
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Discrete Math (e.g., Prime Factors)
Page 21 and 22:
Interpolation and Computational Geo
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Ordinary Differential Equations (IV
Page 25 and 26: Elementary Sparse Matrices spdiags
Page 27 and 28: Programming and Data Types Programm
Page 29 and 30: strjust Justify character array str
Page 31 and 32: Data Type Conversion Numeric double
Page 33 and 34: Basic Array Information disp Displa
Page 35 and 36: Arithmetic Operations + Plus - Minu
Page 37 and 38: Programming in MATLAB “M-File Fun
Page 39 and 40: Control Flow break Terminate execut
Page 41 and 42: MEX Programming dbmex Enable MEX-fi
Page 43 and 44: Opening, Loading, Saving Files impo
Page 45 and 46: Audio and Audio/Video General audio
Page 47 and 48: Graphics 2-D graphs, specialized pl
Page 49 and 50: Area, Bar, and Pie Plots area Area
Page 51 and 52: Bit-Mapped Images frame2im Convert
Page 53 and 54: Figure Windows clc Clear figure win
Page 55 and 56: Color Operations brighten Brighten
Page 57 and 58: Lighting camlight Cerate or positio
Page 59 and 60: Deploying User Interfaces guidata S
Page 61 and 62: Functions — Alphabetical List 2
Page 63 and 64: 2factorial Purpose Factorial functi
Page 65 and 66: 2fclose Purpose Close one or more o
Page 67 and 68: See Also compass, LineSpec, rose 2
Page 69 and 70: 2ferror Purpose Query MATLAB about
Page 71 and 72: . . fx = feval(funfcn,x,varargin{:}
Page 73 and 74: Examples A common use of Fourier tr
Page 75: Data Type Support When N is a prime
Page 79 and 80: 2fftshift Purpose Shift zero-freque
Page 81 and 82: 2fftw Purpose Interface to the FFTW
Page 83 and 84: fftw('wisdom', str) loads the strin
Page 85 and 86: 2fgetl Purpose Read line from file,
Page 87 and 88: 2fieldnames Purpose Return field na
Page 89 and 90: 2figflag Purpose This function is O
Page 91 and 92: 2figure Purpose Create a figure gra
Page 93 and 94: Property Name Property Description
Page 99 and 100: Modifying Properties Figure Propert
Page 101 and 102: Children vector of handles Figure P
Page 103 and 104: Color ColorSpec Figure Properties B
Page 105 and 106: Figure Properties unless the mouse
Page 107 and 108: Figure Properties and labels, the c
Page 109 and 110: InvertHardcopy {on} | off Figure Pr
Page 111 and 112: Figure Properties This property aff
Page 113 and 114: PaperType Select a value from the f
Page 115 and 116: PointerShapeCData 16-by-16 matrix F
Page 117 and 118: Figure Properties On UNIX systems,
Page 119 and 120: Or Figure Properties The host compu
Page 121 and 122: SelectionType {normal} | extend | a
Page 123 and 124: Units {pixels} | normalized | inche
Page 125 and 126: Figure Properties and stays above a
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Figure Properties zdepth 24 - indic
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!glxinfo Figure Properties After pr
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2fileattrib Purpose Set or get attr
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Examples Get Attributes of File To
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fileattrib The operation was succes
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filebrowser 2filebrowser Purpose Di
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File Format Extension File Content
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2fileparts Purpose Return filename
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2fill Purpose Filled two-dimensiona
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See Also axis, caxis, colormap, Col
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If you specify color using C, fill3
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2filter Purpose Filter data with an
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The operation of filter at sample m
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2find Purpose Find indices and valu
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x = [11 0 33 0 55]'; find(x) ans =
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2findall Purpose Find handles of al
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2findobj Purpose Locate graphics ob
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'-and','-not',{'Color','red','-or',
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2finish Purpose MATLAB termination
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fitsinfo The tables that follow sho
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Fields of the BinaryTable Structure
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Fields of the Unknown Structure Arr
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key = S.AsciiTable.Keywords ans = '
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Example Read FITS file tst0012.fits
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2flipdim Purpose Flip array along a
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2flipud Purpose Flip matrices up-do
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2floor Purpose Round towards minus
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2flow Purpose A simple function of
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1 fminbnd converged to a solution x
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fminbnd Limitations The function to
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TolFun Termination tolerance on the
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function f = myfun(x,a) f = x(1)^2
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current directory. If it is not fou
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2for Purpose Repeat statements a sp
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2format Purpose Control display for
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get(0,'Format') ans = long Set the
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2fplot Purpose Plot a function betw
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1 0.8 0.6 0.4 0.2 0 −0.2 −0.4
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100 80 60 40 20 0 0 0.1 0.2 0.3 0.4
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fprintf Flags You can control the a
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Character Description \'' or '' (tw
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It's Friday. The commands B = [8.8
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2frameedit Purpose Create and edit
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frameedit Printing Simulink Block D
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machineformat argument from the out
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Specifying Output Precision By defa
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Remarks If the input stream is byte
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In the example, the fread command a
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2freqspace Purpose Determine freque
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2fscanf Purpose Read formatted data
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fscanf Mixing character and numeric
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'eof' 1: End of file status A retur
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2ftp Purpose Connect to FTP server,
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2full Purpose Convert sparse matrix
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2func2str Purpose Construct a funct
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2function Purpose Function M-files
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2function_handle (@) Purpose MATLAB
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To execute the sqr function defined
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f = functions(@floor) f = function:
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2funm Purpose Evaluate general matr
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[F, exitflag, output] = funm(...) r
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2fwrite Purpose Write binary data t
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[x,fval,exitflag] = fzero(...) retu
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Purpose Test matrices Syntax [A,B,C
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C = gallery('chebvand',m,p) where m
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Argument k defaults to round(n/4),
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(n,n+1-abs(j)) position, and zeros
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kahan—Upper trapezoidal matrix A
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gallery with the same diagonal entr
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pei—Pei matrix gallery A = galler
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andhess—Random, orthogonal upper
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iemann—Matrix associated with the
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toeppen—Pentadiagonal Toeplitz ma
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n = 5 hilb(6)(1:5,2:6)*1.8144. A sy
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gamma, gammainc, gammaln Y = gammal
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2gcbf Purpose Get handle of figure
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2gcd Purpose Greatest common diviso
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2gcf Purpose Get current figure han
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2genpath Purpose Generate a path st
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See Also addpath, path, pathdef, pa
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genvarname If the str input contain
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k time_elapsed time_elapsed2 time_e
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object property names and whose fie
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2get (timer) Purpose Display or get
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2getappdata Purpose Get value of ap
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2getfield Purpose Get field of stru
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2getframe Purpose Get movie frame S
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getplottool 2getplottool Purpose Ut
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2global Purpose Define a global var
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2gmres Purpose Generalized Minimum
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Examples Example 1. A = gallery('wi
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gmres References [1] Barrett, R., M
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See Also LineSpec, sparse, spy 1 0.
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Examples The statements gradient di
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2graymon Purpose Set default figure
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2griddata Purpose Data gridding Syn
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0.5 0 −0.5 2 1 0 See Also delauna
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griddata3 [2] National Science and
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griddatan Reference [1] Barber, C.
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Examples Example 1. The matrices ha
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A = B = The statement 1 4 7 10 13 2
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2gtext Purpose Mouse placement of t
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% save the structure guidata(figure
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Purpose Hadamard matrix Syntax H =
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2hdf Purpose HDF interface Syntax h
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2hdf5 Purpose HDF5 data type classe
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The following are the methods of th
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Methods Description Syntax setData
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h5vlen The HDF5 h5vlen class associ
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Data: {[] [] []} MemberNames: {'tem
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2hdf5info Purpose Return informatio
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2hdf5read Purpose Read data from an
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2hdf5write Purpose Write a Hierarch
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hdf5write If the data in the worksp
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2hdfinfo Purpose Return information
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hdfinfo Fields Common to Returned S
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Fields of the Vdata Structure Field
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See Also hdfread, hdf fileinfo = hd
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hdfread If a parameter requires mul
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Parameter Description Required Para
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hdfread Subsetting Parameters for H
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Parameter Description Optional Para
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ans = 16 ans = 5 hdfread Using hdfr
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2hdftool Purpose Browse and import
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help classname.methodname displays
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help datafeed displays help for the
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Tabs in Help Navigator pane provide
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2helpdlg Purpose Create a help dial
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2helpwin Purpose Provide access to
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See Also eig, qz, schur Matrix A Ro
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2hex2num Purpose Convert IEEE hexad
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2hggroup Purpose Create hggroup obj
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Property Name Property Description
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Modifying Properties Hggroup Proper
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Hggroup Properties MATLAB executes
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Hggroup Properties potentially dama
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Hggroup Properties When you want to
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2hgsave Purpose Saves a Handle Grap
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More Information The references in
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h(1) = surface(x,y,z,'FaceColor','r
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Hgtransform Properties ButtonDownFc
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Hgtransform Properties none — Do
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Interruptible {on} | off Hgtransfor
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Hgtransform Properties the child ob
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2hilb Purpose Hilbert matrix Syntax
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The histogram’s x-axis reflects t
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2histc Purpose Histogram count Synt
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hold off sets the NextPlot property
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2horzcat Purpose Horizontal concate
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2hostid Purpose Return MATLAB serve
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Purpose Imaginary unit Syntax i a+b
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Remarks Nonscalar Expressions If th
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2ifft Purpose Inverse discrete Four
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2ifft2 Purpose Two-dimensional inve
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2ifftn Purpose Multidimensional inv
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2ifftshift Purpose Inverse FFT shif
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2im2java Purpose Convert image to J
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2imag Purpose Imaginary part of a c
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image(x,y,C,'PropertyName',Property
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The order of the operations must be
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Modifying Properties Image Properti
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Image Properties ButtonDownFcn stri
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0.5 1 1.5 2 2.5 3 3.5 4 4.5 0.5 1 1
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Image Properties slowest. The other
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Image Properties See Objects That C
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2imagesc Purpose Scale data and dis
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See Also image “Bit-Mapped Images
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Information Returned Format File Ty
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See Also imformats, imread, imwrite
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Field Value alpha Returns 1 if the
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2importdata Purpose Load data from
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Supported Formats [...] = imread(fi
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imread Note By default, Microsoft W
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[...] = imread(...,'Back','none');
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This example reads an ICO image, ap
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Supported Formats imwrite This tabl
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JPEG-Specific Parameters This table
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Parameter Values Default 'Transpare
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RAS-Specific Parameters This table
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imwrite L*a*b* Color Data For TIFF
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2ind2rgb Purpose Convert an indexed
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IND = [3 4 5 6] s = [3,3]; [I,J] =
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2Inf Purpose Infinity Syntax Inf In
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2info Purpose Display Release Notes
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g(t) = t^2 You can convert the resu
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2inmem Purpose Return functions in
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2inpolygon Purpose Detect points in
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2input Purpose Request user input S
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2inputname Purpose Input argument n
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Check this field in the MATLAB comm
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2int8, int16, int32, int64 Purpose
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2interp1 Purpose One-dimensional da
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y = sin(x); xi = 0:.25:10; yi = int
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interp1 For the 'spline' method, in
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interp2 spacing is handled by mappi
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2interp3 Purpose Three-dimensional
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2interpft Purpose One-dimensional i
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interpn Discussion All the interpol
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interpstreamspeed coordinates for U
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See Also stream2, stream3, streamli
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2intmax Purpose Return largest poss
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2intwarning Purpose Control state o
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Examples Check the initial state of
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2inv Purpose Matrix inverse Syntax
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See Also det, lu, rref Inputs of Ty
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2ipermute Purpose Inverse permute t
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See Also isa islogical Determine if
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To check for a sparse array, use is
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2iscell Purpose Determine if input
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2ischar Purpose Determine if input
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2isempty Purpose Test if array is e
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f2: 50 B.f2 = 50; B.f1 = 25 B = f2:
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2isfield Purpose Determine if input
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2isfloat Purpose Detect floating-po
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2ishandle Purpose Determines if val
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2isinf Purpose Detect infinite elem
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2iskeyword Purpose Determine if inp
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2isletter Purpose Detect array elem
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2ismember Purpose Detect members of
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2ismethod Purpose Determine if inpu
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2isnumeric Purpose Determine if inp
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2isocaps Purpose Compute isosurface
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“Volume Visualization” for rela
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isonormals(x,y,z,data,p); isocolors
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See Also isosurface, isocaps, smoot
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isonormals Draw an isosurface from
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isosurface(...) with no output argu
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2ispc Purpose Determine if PC (Wind
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2isprop Purpose Determine if input
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This expression detects strictly re
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2issorted Purpose Determine if set
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2isspace Purpose Detect space chara
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2isstr Purpose Determine if input i
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Category Description isstrprop wspa
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2isstruct Purpose Determine if inpu
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2isunix Purpose Determine if UNIX v
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2isvarname Purpose Determine if inp
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Purpose Imaginary unit Syntax j x+y
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2kron Purpose Kronecker tensor prod
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lasterr catch errmsg = lasterr; if(
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catch do_cleanup rethrow(lasterror)
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lastwarn Use lastwarn to determine
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2ldivide, rdivide Purpose Left or r
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legend(string_matrix) adds a legend
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Obsolete Location Values Obsolete S
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See Also LineSpec, plot In this exa
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m m Nn ( x) = ( - 1) legendre m Des
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2length Purpose Length of vector Sy
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license Image Processing Toolbox. T
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2light Purpose Create a light objec
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Modifying Properties Light Property
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HandleVisibility {on} | callback |
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Light Properties to define object h
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2lighting Purpose Select the lighti
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2line Purpose Create line object Sy
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Finally, pop the first line to the
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Line Properties queue — Queue the
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Line Properties color with that of
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Line Properties Marker character (s
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Line Properties Type string (read o
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Lineseries Properties routine as a
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Lineseries Properties obtain greate
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Lineseries Properties Marker charac
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Lineseries Properties Type string (
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Lineseries Properties MATLAB reeval
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Specifier Marker Type 'square' or s
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1 0.8 0.6 0.4 0.2 0 −0.2 −0.4
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2linkaxes Purpose Synchronize limit
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2linkprop Purpose Keep same value f
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The property linking code is in ste
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2linsolve Purpose Solve a linear sy
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opts.UT = true; opts.TRANSA = true;
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2listdlg Purpose Create list select
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2load Purpose Load workspace variab
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Example 2 — Loading From an ASCII
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See Also load, save, saveobj loadob
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2log1p Purpose Compute log(1+x) acc
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2log10 Purpose Common (base 10) log
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2loglog Purpose Log-log scale plot
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2logm Purpose Matrix logarithm Synt
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2logspace Purpose Generate logarith
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2lower Purpose Convert string to lo
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2lscov Purpose Least squares soluti
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Reference [1] Strang, G., Introduct
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[x,resnorm,residual,exitflag] = lsq
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2lsqr Purpose LSQR implementation o
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[x,flag,relres,iter,resvec] = lsqr(
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2lu Purpose LU matrix factorization
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P Row permutation matrix satisfying
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The determinant of the example matr
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2luinc Purpose Incomplete LU matrix
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thresh is the pivot threshold betwe
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0 100 200 300 400 0 100 200 300 400
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Purpose Magic square Syntax M = mag
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350 300 250 200 150 100 50 n = 18 0
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2mat2cell Purpose Divide matrix int
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2mat2str Purpose Convert a matrix i
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2material Purpose Controls the refl
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2matlab (UNIX) Purpose Start MATLAB
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Values for archOption Option Descri
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matlab (UNIX) separated list of lic
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matlab (UNIX) The following table l
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Variable Definition and Standard As
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Variable Definition and Standard As
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2matlab (Windows) Purpose Start MAT
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matlab (Windows) matlab mgrOption s
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2matlabcolon (matlab:) Purpose Run
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and depending on which link is clic
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2matlabrc Purpose MATLAB startup M-
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2max Purpose Maximum elements of an
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2median Purpose Median value of arr
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2menu Purpose Generate a menu of ch
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2mesh, meshc, meshz Purpose Mesh pl
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5 0 −5 −10 3 2 1 0 −1 −2 Ge
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mesh, meshc, meshz meshc assumes th
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Y = 10 10 10 11 11 11 12 12 12 13 1
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GetBSTR GetVariantVector addpropert
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2mex Purpose Compile MEX-function f
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2mexext Purpose Return the MEX-file
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2mget (ftp) Purpose Download file f
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2minres Purpose Minimum Residual me
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Examples Example 1. n = 100; on = o
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2mislocked Purpose True if M-file o
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s = 1 mess = '' messid = '' mkdir I
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2mkpp Purpose Make a piecewise poly
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See Also ppval, spline, unmkpp mkpp
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mldivide \, mrdivide / Note Matrix
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-0.0321 mldivide \, mrdivide / The
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mldivide \, mrdivide / forward subs
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X = U\(L\B) mldivide \, mrdivide /
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2mlint Purpose Check M-files for po
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2mlintrpt Purpose Run mlint for fil
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See Also mlint mlintrpt For more in
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2mmfileinfo Purpose Information abo
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audio_data = Format: 'MPEGLAYER3' N
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2more Purpose Display Command Windo
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If the current directory is project
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2movegui Purpose Move GUI figure to
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2movie Purpose Play recorded movie
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2movie2avi Purpose Create an Audio/
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2mput (ftp) Purpose Upload file or
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2mtimes Purpose Matrix multiplicati
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while the third column of B is B(:,
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2multibandread Purpose Read band in
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Subsetting Parameters multibandread
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2multibandwrite Purpose Write multi
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Band Column Row C C C C C B B B B B
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2munlock Purpose Allow M-file or ME
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Purpose Return maximum identifier l
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See Also Inf, isnan unique([1 1 NaN
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error(nargchk(2, 4, nargin, 'struct
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end See Also inputname, varargin, v
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error(nargoutchk(2, 4, nargout, 'st
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2ndgrid Purpose Generate arrays for
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2ndims Purpose Number of array dime
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First, newplot reads the current fi
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2nextpow2 Purpose Next power of two
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2noanimate Purpose Change EraseMode
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2norm Purpose Vector and matrix nor
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2normest Purpose 2-norm estimate Sy
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2now Purpose Current date and time
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2null Purpose Null space of a matri
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2num2cell Purpose Convert a numeric
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2num2str Purpose Number to string c
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2numel Purpose Number of elements i
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Purpose Solve fully implicit differ
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sol.x Steps chosen by the solver. I
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[y0,yp0] = decic(@weissinger,t0,y0,
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ode45, ode23, ode113, ode15s, ode23
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Page 883 and 884:
odefile 2odefile Purpose Define a d
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options = < Insert options = odeset
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3 2 1 0 −1 −2 −3 0 2 4 6 8 10
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2odeget Purpose Extract properties
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Solver output Jacobian matrix Event
Page 893 and 894:
Jacobian Matrix Properties (for ode
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Step Size Properties Property Value
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odextend Note To extend solutions o
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2open Purpose Open files based on e
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Example 4 — Opening a MAT-File Th
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figure_handle = openfig(...) return
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openvar 2openvar Purpose Open works
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2optimset Purpose Create or edit an
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Option Value Description optimset O
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c: 3 a: 1 snew = orderfields(s) sne
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2ordschur Purpose Reorder eigenvalu
Page 915 and 916:
See Also print, set the orient port
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2otherwise Purpose Default part of
Page 919 and 920:
Symbols $matlabroot 2-1430 @ 2-915
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COM object methods inspect 2-1184 i
Page 923 and 924:
equal arrays detecting 2-1228, 2-12
Page 925 and 926:
format precision when writing 2-890
Page 927 and 928:
appending to when saving (WriteMode
Page 929 and 930:
one-dimensional 2-1189 two-dimensio
Page 931 and 932:
lighting 2-1315 Line creating 2-131
Page 933 and 934:
M-files checking for problems 2-147
Page 935 and 936:
elational 2-1368 symbols 2-1050 opt
Page 937 and 938:
R range space 2-1592 RAS files para
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tensor, Kronecker product 2-1283 te
Page 941:
Line property 2-1331 lineseries pro
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