jhplot

Class FND

java.lang.Object

jhplot.Plottable

jhplot.DrawOptions

jhplot.FND

All Implemented Interfaces:

java.io.Serializable

public class FND
extends DrawOptions

Create a function in multiple dimensions. The function name could have parameters named in unique way as P0, P1, P2 ... They have to be replaced with values using setPar() method for evaluation

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
FND(FProxy f) Initialize function from proxy.
FND(java.lang.String name, java.lang.String vars) Build a function, setting its title to the definition.
FND(java.lang.String title, java.lang.String name, java.lang.String vars) Create a function in any dimension evaluation.

Method Summary

Modifier and Type	Method and Description
void	diff(java.lang.String var) differentiate the expression and simplify
void	doc() Show online documentation.
double	eval(java.lang.String vars) Evaluate a function at a specific point in x
boolean	eval(java.lang.String indvars, double xmin, double xmax) Evaluate a function at a specific point for one single variable.
boolean	eval(java.lang.String indvars, double xmin, double xmax, java.lang.String vars) Evaluate a function at a specific point for one single variable.
FProxy	get() Get the proxy of this function used for serialization and non-graphical representations.
java.lang.String	getFixedVars() String with fixed variables
double	getMax() Get the maximum value in X
double	getMin() Get the minimum value in X
java.lang.String	getName() Get the name of the function used for evaluation
int	getPoints() Get the number of points
java.lang.String[]	getVars() Return all variables
java.lang.String	getVarString() Get arguments of the function (independent variables).
double	getX(int i) Get value in X-axis
double	getY(int i) Get value in Y-axis
boolean	isEvaluated() Is the function was evaluated?
void	setComplex() Treat the function as complex.
void	setMax(double max) Set the maximum value in X
void	setMin(double min) Set Min value in X
void	setName(java.lang.String name) Sets a name of the function, i.e.
void	setPoints(int bins) Sets the number points between Min and Max for evaluation
void	simplify() Treat the function as complex.
java.lang.String	toString() Convert to string

Methods inherited from class jhplot.DrawOptions

copyLinePars, getBinWidth, getColor, getDrawOption, getDrawOptions, getFillColor, getLegend, getLineParm, getLineStyle, getNameX, getNameY, getNameZ, getPenWidth, getSymbol, getSymbolShape, getSymbolSize, getTitle, getType, isBars, isErrX, isErrY, isFilled, printDrawOptions, printDrawOptions, setBars, setBinWidth, setColor, setDrawLine, setDrawLineKey, setDrawOption, setDrawSymbol, setErr, setErrAll, setErrColor, setErrColor, setErrColorX, setErrColorY, setErrFill, setErrFillColor, setErrFillColor, setErrSys, setErrSysFill, setErrSysFillColor, setErrSysFillColor, setErrSysX, setErrSysY, setErrTicSize, setErrX, setErrY, setFill, setFillColor, setFillColorTransparency, setGraphStyle, setLegend, setLineStyle, setNameX, setNameY, setNameZ, setPenDash, setPenDash, setPenWidth, setPenWidthErr, setPenWidthErrSys, setStyle, setSymbol, setSymbol, setSymbolSize, setTitle, setType

Methods inherited from class jhplot.Plottable

getLabelX, getLabelY, getLabelZ, is3D, set3D, setLabelX, setLabelY, setLabelZ

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

FND

public FND(java.lang.String title,
           java.lang.String name,
           java.lang.String vars)

Create a function in any dimension evaluation. The function may have many independent variables.

List of commands

• ( ) parenthesis , comma
• +, -, unary -, unary +
• *, /
• ^ (raise to a power)
• pi, e, All the constants in class SpecialFunction
• log
• sin, cos, tan, sinh, cosh, tanh
• asin, acos, atan, asinh, acosh, atanh
• sqrt
• rand
• exp
• remainder
• atan2
• Special functions and constants. Look at the book
• All the functions in class SpecialFunction
• Independent variables x
• Scientific notation using "e", "E", "d", "D".

Parameters:

name - String representing the function

vars - String representing variables. Each variable should be separated by a comma. Example "x,y,z"

FND

public FND(java.lang.String name,
           java.lang.String vars)

Build a function, setting its title to the definition.

Parameters:

title - Title

name - name

vars - Options

FND

public FND(FProxy f)

Initialize function from proxy.

Parameters:

f -

Method Detail

setComplex

public void setComplex()

Treat the function as complex.

simplify

public void simplify()

Treat the function as complex.

diff

public void diff(java.lang.String var)

differentiate the expression and simplify

Parameters:

var - variable used for differentiation

getVars

public java.lang.String[] getVars()

Return all variables

Returns:

array array with variables

toString

public java.lang.String toString()

Convert to string

Overrides:

toString in class java.lang.Object

eval

public double eval(java.lang.String vars)

Evaluate a function at a specific point in x

Parameters:

vars - Values for evaluation separated by commas, x=1,y=2,z=3

Returns:

function value at x

eval

public boolean eval(java.lang.String indvars,
                    double xmin,
                    double xmax,
                    java.lang.String vars)

Evaluate a function at a specific point for one single variable. Evaluation is done between xmin and xmax

Parameters:

indvars - Define independent variable, like 'x' Only one variable is allowed

xmin - xmin value for independent varible

xmax - xmax value for independent varible

vars - define values for other variables, like 'y=1,z=3'

Returns:

true if no errors

eval

public boolean eval(java.lang.String indvars,
                    double xmin,
                    double xmax)

Evaluate a function at a specific point for one single variable. Evaluation is done between xmin and xmax. It is assumed that there are no any other variable involved

Parameters:

indvars - Define independent variable, like 'x' Only one variable is allowed

xmin - xmin value for independent varible

xmax - xmax value for independent varible

Returns:

true if no errors

isEvaluated

public boolean isEvaluated()

Is the function was evaluated?

getX

public double getX(int i)

Get value in X-axis

Parameters:

i - index

Returns:

value in X

getY

public double getY(int i)

Get value in Y-axis

Parameters:

i - index

Returns:

value in Y

setName

public void setName(java.lang.String name)

Sets a name of the function, i.e. what will be used for evaluation

Parameters:

name - Name

get

public FProxy get()

Get the proxy of this function used for serialization and non-graphical representations.

Parameters:

proxy - proxy of this function.

getName

public java.lang.String getName()

Get the name of the function used for evaluation

Returns:

Name

getVarString

public java.lang.String getVarString()

Get arguments of the function (independent variables).

Returns:

arguments

doc

public void doc()

Show online documentation.

setMin

public void setMin(double min)

Set Min value in X

Parameters:

min - Minimum value

getMin

public double getMin()

Get the minimum value in X

Returns:

min Minimum value

setMax

public void setMax(double max)

Set the maximum value in X

Parameters:

max - Maximal value

getMax

public double getMax()

Get the maximum value in X

Returns:

Maximal value

setPoints

public void setPoints(int bins)

Sets the number points between Min and Max for evaluation

Parameters:

bins - Number of points

getPoints

public int getPoints()

Get the number of points

Returns:

Number of points

getFixedVars

public java.lang.String getFixedVars()

String with fixed variables

Returns:

String with fixed variables