Concept Index: H – P

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	Index Entry	Section

H
	handle, function handles	11.9 Function Handles, Inline Functions, and Anonymous Functions
	header comments	C.4 Conventional Headers for Octave Functions
	help, on-line	2.3 Commands for Getting Help
	help, user-defined functions	2.7.3 Comments and the Help System
	help, where to find	E.7 How To Get Help with Octave
	Hermitian operator	8.3 Arithmetic Operators
	Hessenberg decomposition	18.3 Matrix Factorizations
	history	Preface
	history of commands	2.4.5 Commands For Manipulating The History

I
	`if` statement	10.1 The `if` Statement
	image graphics object	15.2.1 Graphics Objects
	image properties	15.2.2.6 Image Properties
	improving Octave	E.3 Have You Found a Bug?
	improving Octave	E.6 Sending Patches for Octave
	incorrect error messages	E.3 Have You Found a Bug?
	incorrect output	E.3 Have You Found a Bug?
	incorrect output	E.5 How to Report Bugs
	incorrect results	E.3 Have You Found a Bug?
	incorrect results	E.5 How to Report Bugs
	increment operator	8.6 Assignment Expressions
	infinity norm	18.2 Basic Matrix Functions
	initialization	2.1.2 Startup Files
	inline, inline functions	11.9 Function Handles, Inline Functions, and Anonymous Functions
	input conversions, for `scanf`	14.2.13 Table of Input Conversions
	input history	2.4.5 Commands For Manipulating The History
	installation trouble	E. Known Causes of Trouble
	installing Octave	F. Installing Octave
	introduction	1. A Brief Introduction to Octave
	invalid input	E.3 Have You Found a Bug?

J
	job hunting	7. Variables

K
	known causes of trouble	E. Known Causes of Trouble

L
	less than operator	8.4 Comparison Operators
	line graphics object	15.2.1 Graphics Objects
	line properties	15.2.2.4 Line Properties
	line series	15.2.8.6 Line series
	line styles, graphics	15.2.5 Line Styles
	loadable function	1.3.5.1 A Sample Function Description
	loading data	14.1.3 Simple File I/O
	logging commands and output	2.4.8 Diary and Echo Commands
	logical expressions	8.5 Boolean Expressions
	logical operators	8.5 Boolean Expressions
	loop	10.3 The `while` Statement
	looping over structure elements	10.5.1 Looping Over Structure Elements
	LP	24. Optimization
	LU decomposition	18.3 Matrix Factorizations
	LU decomposition	21.3 Iterative Techniques applied to sparse matrices
	lvalue	8.6 Assignment Expressions

M
	mapping function	1.3.5.1 A Sample Function Description
	marker styles, graphics	15.2.6 Marker Styles
	matching failure, in `scanf`	14.2.11 Formatted Input
	matrices	4.1 Matrices
	matrix multiplication	8.3 Arithmetic Operators
	maximum field width (`scanf`)	14.2.12 Input Conversion Syntax
	messages, error	2.5 How Octave Reports Errors
	mex	A.2 Mex-Files
	mex-files	A.2 Mex-Files
	minimum field width (`printf`)	14.2.6 Output Conversion Syntax
	missing data	3.1.2 Missing Data
	mkoctfile	A.1 Oct-Files
	multi-line comments	2.7.2 Block Comments
	multiplication	8.3 Arithmetic Operators

N
	negation	8.3 Arithmetic Operators
	NLP	24. Optimization
	nonlinear equations	19. Nonlinear Equations
	nonlinear programming	24. Optimization
	not operator	8.5 Boolean Expressions
	numeric constant	3.1.1 Numeric Objects
	numeric constant	4. Numeric Data Types
	numeric value	3.1.1 Numeric Objects
	numeric value	4. Numeric Data Types

O
	object groups	15.2.8 Object Groups
	oct	A.1 Oct-Files
	oct-files	A.1 Oct-Files
	Octave command options	2.1.1 Command Line Options
	Octave development	D. Contributing Guidelines
	`octave-tags`	G.2 Using Octave Mode
	ODE	23. Differential Equations
	on-line help	2.3 Commands for Getting Help
	operator precedence	8.8 Operator Precedence
	operators, arithmetic	8.3 Arithmetic Operators
	operators, assignment	8.6 Assignment Expressions
	operators, boolean	8.5 Boolean Expressions
	operators, decrement	8.6 Assignment Expressions
	operators, increment	8.6 Assignment Expressions
	operators, logical	8.5 Boolean Expressions
	operators, relational	8.4 Comparison Operators
	optimization	24. Optimization
	options, Octave command	2.1.1 Command Line Options
	or operator	8.5 Boolean Expressions
	oregonator	23.1 Ordinary Differential Equations
	`otherwise` statement	10.2 The `switch` Statement
	output conversions, for `printf`	14.2.7 Table of Output Conversions

P
	patch graphics object	15.2.1 Graphics Objects
	patch properties	15.2.2.7 Patch Properties
	patches, submitting	E.6 Sending Patches for Octave
	`persistent` statement	7.2 Persistent Variables
	persistent variables	7.2 Persistent Variables
	personal startup file	2.1.2 Startup Files
	plotting	15. Plotting
	precision (`printf`)	14.2.6 Output Conversion Syntax
	printing notation	1.3.3 Printing Notation
	program, self contained	2.6 Executable Octave Programs
	project startup file	2.1.2 Startup Files
	prompt customization	2.4.7 Customizing the Prompt

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