matlab primer 7th edition phần 4 pps

... black 59 9 .4 MATLAB mx and mex routines In the last example, the C routine calls several MATLAB routines with the prefix mx or mex. Routines with mx prefixes operate on MATLAB matrices ... can, for example, draw the graph of the sine function over the interval -4 to 4 with the following commands: x = -4: 0.01 :4 ; y = sin(x) ; plot(x, y) ; Try it. The vector x is a pa...

Ngày tải lên: 12/08/2014, 21:21

... way, you can write a routine that can be used from MATLAB or from a stand-alone C application, without MATLAB. 9.2 C versus MATLAB arrays MATLAB stores its arrays in column major order, while ... 9 .4 MATLAB mx and mex routines In the last example, the C routine calls several routines with the prefix P[ or PH[. These are routines in MATLAB. Routines with P[ prefixes operate...

Ngày tải lên: 12/08/2014, 21:20

... 54 MATLAB. In this chapter, we will just look at how to call a C routine from MATLAB. For more information, see Help: MATLAB: External Interfaces, or see the online MATLAB documents ... MATLAB can call routines written in C, Fortran, or Java. Similarly, programs written in C and Fortran can call 43 A line starting with two percent signs (%%) denotes the beginning of a MAT...

Ngày tải lên: 12/08/2014, 21:20

... Read data from a FITS file HDF version 4 file handling hdfinfo Get information about an HDF4 file hdfread Read HDF4 file hdftool Browse/import HDF4 or HDF-EOS files HDF version 5 file ... integer int 64 Convert to signed 64- bit integer uint8 Convert to unsigned 8-bit integer uint16 Convert to unsigned 16-bit integer uint32 Convert to unsigned 32-bit integer uint 64...

Ngày tải lên: 12/08/2014, 21:21

... fill-in when they are factorized (see Section 13 .4) . Sparse matrices arising in real applications typically do not share this characteristic. 4 The versatile function VSDUVH also permits creation ... singular values, then you can use the HLJV or VYGV functions (HLJV6 or VYGV6). 13 .4 Ordering methods When MATLAB solves a sparse linear system ([ $?E), it typically starts by...

Ngày tải lên: 12/08/2014, 21:20

... movie (AVI) file Return information about AVI file Create a new AVI file Create AVI movie from MATLAB movie Formatted file I/O Read line from file, discard newline character Read line ... of strings from character array String of blanks Remove trailing blanks Execute string as a MATLAB expression © 2002 by CRC Press LLC Volume and vector visualization (continued) Extract...

Ngày tải lên: 12/08/2014, 21:20

... MATLAB toolboxes, Simulink has domain-specific add-ons called blocksets. 16.1 MATLAB MATLAB Compiler (convert M-files to C/C++) MATLAB C/C++ Math Library MATLAB C/C++ Graphics Library MATLAB ... C/C++ Math Library MATLAB C/C++ Graphics Library MATLAB Report Generator MATLAB Runtime Server MATLAB Web Server 16.2 MATLAB toolboxes Math and Analysis Toolboxes: Optimizat...

Ngày tải lên: 12/08/2014, 21:20

... 7.3 Function files 40 7 .4 Multiple inputs and outputs 41 7.5 Variable arguments 42 7.6 Comments and documentation 42 7.7 MATLAB s path 43 8. Advanced M-file Features 43 8.1 Function handles ... functions 43 8.2 Name resolution 47 8.3 Error and warning messages 48 8 .4 User input 49 8.5 Performance measures 49 8.6 Efficient code 51 9. Calling C from MATLAB 53 9.1...

Ngày tải lên: 12/08/2014, 21:20

... A is displayed and assigned. Columns 2 and 4 of A can be multiplied on the right by the matrix [1 2 ; 3 4] : A(:,[2 4] ) = A(:,[2 4] ) * [1 2 ; 3 4] Once again, the entire altered matrix is ... them by a period. For example, either: [1 2 3 4] .* [1 2 3 4] [1 2 3 4] .^ 2 will yield [1 4 9 16]. Try it. This is particularly useful when using MATLAB graphics. Also compare...

Ngày tải lên: 12/08/2014, 21:20

... lu(A(:,colamd(A))) ; spy(L|U) [L,U,P,Q] = lu(A) ; spy(L|U) 4 http://www.cise.ufl.edu/research/sparse/umfpack. MATLAB 7.0 uses UMFPACK 4. 0. UMFPACK 4. 3 includes multiple ordering strategies and selects ... significant digits: .88622692 545 2758013 649 0835 You may wish to contrast these techniques with the MATLAB numerical integration functions quad and quadl (see Section...

Ngày tải lên: 12/08/2014, 21:21