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[Matlab] Essential MATLAB for Engineers and Scientists - Brian D. Hahn & Danie.pdf
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PART I ESSENTIALS 1
1 Introduction 3
1.1 Using MATLAB 4
1.2 The MATLAB desktop 15
1.3 Sample program 16
1.3.1 Cut and paste 16
1.3.2 Saving a program: script files 19
1.3.3 How a program works 21
2 MATLAB fundamentals 24
2.1 Variables and the workspace 24
2.1.1 Variables 24
2.1.2 Case sensitivity 25
2.1.3 The workspace 25
2.1.4 Adding commonly used constants to the workspace 27
2.2 Arrays: vectors and matrices 27
2.2.1 Initializing vectors: explicit lists 28
2.2.2 Initializing vectors: the colon operator 29
2.2.3 linspace 30
2.2.4 Transposing vectors 30
2.2.5 Subscripts 31
2.2.6 Matrices 31
2.2.7 Capturing output 32
2.3 Vertical motion under gravity 33
2.4 Operators, expressions and statements 35
2.4.1 Numbers 35
2.4.2 Data types 36
2.4.3 Arithmetic operators 37
2.4.4 Precedence of operators 37
2.4.5 The colon operator 38
2.4.6 The transpose operator 39
2.4.7 Arithmetic operations on arrays 39
2.4.8 Expressions 41
2.4.9 Statements 41
2.4.10 Statements, commands and functions 43
2.4.11 Vectorization of formulae 43
2.5 Output 47
2.5.1 disp 47
2.5.2 format 49
2.5.3 Scale factors 50
2.6 Repeating with for 51
2.6.1 Square roots with Newton’s method 51
2.6.2 Factorials! 53
2.6.3 Limit of a sequence 53
2.6.4 The basic for construct 54
2.6.5 for in a single line 56
2.6.6 More general for 56
2.6.7 Avoid for loops by vectorizing! 56
2.6.8 A common mistake: for less loops! 59
2.7 Decisions 60
2.7.1 The one-line if statement 60
2.7.2 The if-else construct 62
2.7.3 The one-line if-else statement 63
2.7.4 elseif 64
2.7.5 Logical operators 65
2.7.6 Multiple ifs versus elseif 65
2.7.7 Nested ifs 67
2.7.8 Vectorizing ifs? 68
2.7.9 switch 68
2.8 Complex numbers 69
2.9 More on input and output 71
2.9.1 fprintf 71
2.9.2 Output to a disk file with fprintf 73
2.9.3 General file I/O 73
2.9.4 Saving and loading data 73
2.10 Odds ’n ends 73
2.10.1 Variables, functions and scripts with the same name 73
2.10.2 The input statement 74
2.10.3 Shelling out to the operating system 75
2.10.4 More Help functions 76
2.11 Programming style 76
3 Program design and algorithm development 86
3.1 Computer program design process 87
3.1.1 Projectile problem example 89
3.2 Other examples of structure plans 98
3.2.1 Quadratic equation 99
3.3 Structured programming with functions 100
4 MATLAB functions & *data import-export utilities 104
4.1 Some common functions 105
4.2 *Importing and exporting data 110
4.2.1 The load and save commands 110
4.2.2 Exporting text (ASCII) data 110
4.2.3 Importing text (ASCII) data 111
4.2.4 Exporting binary data 111
4.2.5 The Import Wizard 112
4.2.6 Low-level file I/O functions 113
4.2.7 Other import/export functions 118
5 Logical vectors 121
5.1 Examples 122
5.1.1 Discontinuous graphs 122
5.1.2 Avoiding division by zero 123
5.1.3 Avoiding infinity 125
5.1.4 Counting random numbers 126
5.1.5 Rolling dice 127
5.2 Logical operators 127
5.2.1 Operator precedence 129
5.2.2 Danger 130
5.2.3 Logical operators and vectors 130
5.3 Subscripting with logical vectors 131
5.4 Logical functions 133
5.4.1 Using any and all 134
5.5 Logical vectors instead of elseif ladders 135
6 Matrices of numbers & arrays of strings 141
6.1 Matrices 142
6.1.1 A concrete example 142
6.1.2 Creating matrices 143
6.1.3 Subscripts 144
6.1.4 Transpose 144
6.1.5 The colon operator 144
6.1.6 Duplicating rows and columns: tiling 148
6.1.7 Deleting rows and columns 148
6.1.8 Elementary matrices 149
6.1.9 *Specialized matrices 150
6.1.10 Using MATLAB functions with matrices 151
6.1.11 Manipulating matrices 152
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