Documentation of 'jhplot.F1D' Java class.
F1D
jhplot

## Class F1D

• All Implemented Interfaces:
Serializable

`public class F1Dextends DrawOptions`
Create a function in one dimension using "x" as a variable. The function name could have parameters named in unique way as P0, P1, P2. In this case, the function should not be parsed. Parameters have to be replaced with values using setPar(x) method for evaluation.

One can enabled fast math calculation using @see jhplot.HParam. For example, setting jhplot.HParam.setMath(true) makes calculation of elementary functions a factot 4-5 faster than using the standard Java Math, with precision of E-14.

The function may have one independent variable: x

Operators and functions

the following operators are supported:

• Subtraction: '2 - 2'
• Multiplication: '2 * 2'
• Division: '2 / 2'
• Exponential: '2 ^ 2' or ** (raise to a power)
• Unary Minus,Plus (Sign Operators): '+2 - (-2)'
• Modulo: '2 % 2'
the following functions are supported:
• abs: absolute value
• acos: arc cosine
• asin: arc sine
• atan: arc tangent
• cbrt: cubic root
• ceil: nearest upper integer
• cos: cosine
• cosh: hyperbolic cosine
• exp: euler's number raised to the power (e^x)
• floor: nearest lower integer
• log: logarithm natural (base e)
• log10: logarithm (base 10)
• sin: sine
• sinh: hyperbolic sine
• sqrt: square root
• tan: tangent
• tanh: hyperbolic tangent
It also recognizes the pi (or Pi) values.
Serialized Form
• ### Constructor Summary

Constructors
Constructor and Description
`F1D(Expression calc)`
Create a function in 1D.
`F1D(ExpressionBuilder function)`
Build a function.
`F1D(Expression calc, double min, double max)`
Create a function from the expression.
`F1D(FProxy f)`
Initialize function from proxy.
`F1D(IFunction iname)`
Create a F1D function from JAIDA IFunction.
`F1D(IFunction iname, double min, double max)`
Create a F1D function from JAIDA IFunction in ranges.
`F1D(String name)`
Create a function in 1D.
`F1D(String name, boolean parse)`
Build a function.
`F1D(String title, double[] pars, boolean parse)`
Create a polynomial analytical function using a list of values.
`F1D(String name, double min, double max)`
Create a new function in pre-defined range for plotting.
`F1D(String name, double min, double max, boolean parsed)`
Define a ranged function.
`F1D(String title, Expression calc)`
Create a function in 1D.
`F1D(String title, ExpressionBuilder function)`
Create a function in 1D.
`F1D(String title, Expression calc, double min, double max)`
Create a function in 1D.
`F1D(String title, IFunction iname)`
Create F1D function from JAIDA IFunction.
`F1D(String title, IFunction iname, double min, double max)`
Create F1D function from JAIDA IFunction.
`F1D(String title, String name)`
Create new function.
`F1D(String title, String name, boolean parsed)`
Create a new function in pre-defined range for plotting.
`F1D(String title, String name, double min, double max)`
Create a new function.
`F1D(String title, String name, double min, double max, boolean parse)`
Create a new function.
• ### Method Summary

All Methods
Modifier and TypeMethod and Description
`double[]``differentiate()`
Numerical differentiation of a function.
`double[]``differentiate(int N, double min, double max)`
Numerical differentiation.
`void``doc()`
Show online documentation.
`boolean``elementary()`
Convert this function rewrite in term of elementary functions (log, exp, frac, sqrt, implicit roots) This is useful before simplifying function.
`void``eval()`
Evaluate a function for graphic representation.
`double``eval(double x)`
Evaluate a function at a specific point in x
`double[]``eval(double[] x)`
Evaluate a function for an array of x-values
`void``eval(double xMin, double xMax)`
Evaluate a function for graphic representation.
`void``eval(double min, double max, int Npoints)`
Evaluate a function for graphic representation.
`boolean``expand()`
Convert this function rewrite in expanded form.
`boolean``factorize()`
Convert this function rewrite in factorized form (if can).
`FProxy``get()`
Get the proxy of this function used for serialization and non-graphical representations.
`double[]``getArrayX()`
Get array of X-values after function after evaluation using the default number of points
`double[]``getArrayY()`
Get array of Y-values after function after evaluation using the default number of points
`String``getException()`
If error occurs at some step, this is the way to retrieve it.
`H1D``getH1D()`
Return H1D histogram from F1D function.
`H1D``getH1D(double min, double max)`
Return H1D histogram from F1D function.
`H1D``getH1D(String hname, int bins, double hmin, double hmax)`
Return a Histogram given by the F1D function.
`IFunction``getIFunction()`
Get Jaida function
`double``getMax()`
Get the maximum value in X
`double``getMin()`
Get the minimum value in X
`String``getName()`
Get the name of the function used for evaluation
`Expression``getParse()`
Return parsed function.
`int``getPoints()`
Get the number of points used for plotting, integration and differentiation.
`double``getX(int i)`
Get value in X-axis
`double``getY(int i)`
Get value in Y-axis
`double``integral()`
Integral using fastest trapezium rule method.
`double``integral(double min, double max)`
Integral using fastest trapezium rule method.
`double``integral(int N, double min, double max)`
Numerical integration using trapezium rule.
`double``integral(String type, int N, double min, double max)`
Numerical integration.
`boolean``isParsed()`
If the function is parsed correctly, return true.
`boolean``numeric()`
Perform some numeric substitutions.
`boolean``parse()`
Parse the function.
`void``set(FProxy f)`
Set proxy function
`void``setMax(double max)`
Set the maximum value in X
`void``setMin(double min)`
Set Min value in X
`void``setName(String name)`
Sets a name of the function, i.e.
`void``setPar(String parameter, double value)`
Replace abstract parameter with the value (double).
`void``setPar(String parameter, int value)`
Replace abstract parameter with the value (integer).
`void``setPoints(int bins)`
Sets the number points between Min and Max for evaluation
`boolean``simplify()`
Try to simplify this function.
`String``toJava()`
Convert the function into Java code.
`String``toMathML()`
Convert the function into MathML form.
`String``toString()`
Get this function as a string.
`void``toTable()`
Print the F1D function to a Table in a separate Frame.
• ### 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

• #### F1D

`public F1D(String name)`
Create a function in 1D. 500 points are used between Min and Max for evaluation. The title is set to the function's definition.

A function can be ranged (range min and max is included) or unranged (min and max are not defined). Ranged function determines the plot ranges, integration range etc. The function may have one independent variable: x. Example: x*x Operators and functions

the following operators are supported:

• Subtraction: '2 - 2'
• Multiplication: '2 * 2'
• Division: '2 / 2'
• Exponential: '2 ^ 2' or ** (raise to a power)
• Unary Minus,Plus (Sign Operators): '+2 - (-2)'
• Modulo: '2 % 2'
the following functions are supported:
• abs: absolute value
• acos: arc cosine
• asin: arc sine
• atan: arc tangent
• cbrt: cubic root
• ceil: nearest upper integer
• cos: cosine
• cosh: hyperbolic cosine
• exp: euler's number raised to the power (e^x)
• floor: nearest lower integer
• log: logarithm natural (base e)
• sin: sine
• sinh: hyperbolic sine
• sqrt: square root
• tan: tangent
• tanh: hyperbolic tangent
It also recognizes the pi (or Pi) values;
Parameters:
`name` - String representing the function's definition
• #### F1D

`public F1D(FProxy f)`
Initialize function from proxy.
Parameters:
`f` -
• #### F1D

`public F1D(String title,           String name)`
Create new function. The function is unranged (nor range is defined).
Parameters:
`title` - title
`name` - definition
• #### F1D

`public F1D(String title,           String name,           double min,           double max)`
Create a new function. Do not parse it when using parameters. You should apply substitution first and create a function with one variable "x". If min=0 and max=0, the ranges are determined by plotting canvases. The function is ranged. The function is parsed. The function may have one independent variable: x

Operators and functions

the following operators are supported:

• Subtraction: '2 - 2'
• Multiplication: '2 * 2'
• Division: '2 / 2'
• Exponential: '2 ^ 2' or ** (raise to a power)
• Unary Minus,Plus (Sign Operators): '+2 - (-2)'
• Modulo: '2 % 2'
the following functions are supported:
• abs: absolute value
• acos: arc cosine
• asin: arc sine
• atan: arc tangent
• cbrt: cubic root
• ceil: nearest upper integer
• cos: cosine
• cosh: hyperbolic cosine
• exp: euler's number raised to the power (e^x)
• floor: nearest lower integer
• log: logarithm natural (base e)
• log10: logarithm 10 natural(base e)
• sin: sine
• sinh: hyperbolic sine
• sqrt: square root
• tan: tangent
• tanh: hyperbolic tangent
It also recognizes the pi (or Pi) values.
Parameters:
`title` - title
`name` - definition
`min` - minimum value for plotting
`max` - maximum value for plotting
• #### F1D

`public F1D(String name,           double min,           double max,           boolean parsed)`
Define a ranged function.
Parameters:
`name` - name
`min` - min value
`max` - max value
`parsed` - is parsed?
• #### F1D

`public F1D(String title,           IFunction iname,           double min,           double max)`
Create F1D function from JAIDA IFunction. By default 500 points are used. The function is ranged.
Parameters:
`title` - Title
`iname` - input IFunction
`min` - Min X values
`max` - Max X values
• #### F1D

`public F1D(String title,           String name,           double min,           double max,           boolean parse)`
Create a new function. Do not parse it when using parameters. You should apply substitution first and create a function with one variable "x". If min=0 and max=0, the ranges are determined by plotting canvases. The function is ranged. The function may have one independent variable: x

Operators and functions

the following operators are supported:

• Subtraction: '2 - 2'
• Multiplication: '2 * 2'
• Division: '2 / 2'
• Exponential: '2 ^ 2' or ** (raise to a power)
• Unary Minus,Plus (Sign Operators): '+2 - (-2)'
• Modulo: '2 % 2'
the following functions are supported:
• abs: absolute value
• acos: arc cosine
• asin: arc sine
• atan: arc tangent
• cbrt: cubic root
• ceil: nearest upper integer
• cos: cosine
• cosh: hyperbolic cosine
• exp: euler's number raised to the power (e^x)
• floor: nearest lower integer
• log: logarithm natural (base e)
• log10: logarithm 10 natural(base e)
• sin: sine
• sinh: hyperbolic sine
• sqrt: square root
• tan: tangent
• tanh: hyperbolic tangent
It also recognizes the pi (or Pi) values.
Parameters:
`title` - title
`name` - definition
`min` - minimum value for plotting
`max` - maximum value for plotting
`parse` - parse or not. Do not parse when using parameters.
• #### F1D

`public F1D(IFunction iname,           double min,           double max)`
Create a F1D function from JAIDA IFunction in ranges. By default, 500 points for evaluation are used
Parameters:
`iname` - input IFunction
`min` - Min value
`max` - Max value
• #### F1D

`public F1D(String name,           double min,           double max)`
Create a new function in pre-defined range for plotting. Do not parse it when using parameters. You should apply substitution first and create a function with one variable "x". If min=0 and max=0, ranges are determined by plotting canvaces. The function may have one independent variable: x

Operators and functions

the following operators are supported:

• Subtraction: '2 - 2'
• Multiplication: '2 * 2'
• Division: '2 / 2'
• Exponential: '2 ^ 2' or ** (raise to a power)
• Unary Minus,Plus (Sign Operators): '+2 - (-2)'
• Modulo: '2 % 2'
the following functions are supported:
• abs: absolute value
• acos: arc cosine
• asin: arc sine
• atan: arc tangent
• cbrt: cubic root
• ceil: nearest upper integer
• cos: cosine
• cosh: hyperbolic cosine
• exp: euler's number raised to the power (e^x)
• floor: nearest lower integer
• log: logarithm natural (base e)
• log10: logarithm 10 natural(base e)
• sin: sine
• sinh: hyperbolic sine
• sqrt: square root
• tan: tangent
• tanh: hyperbolic tangent
It also recognizes the pi (or Pi) values.
Parameters:
`name` - definition
`min` - min value for plotting
`max` - max value for plotting
`parse` - parse or not. Do not parse when using parameters.
• #### F1D

`public F1D(String title,           String name,           boolean parsed)`
Create a new function in pre-defined range for plotting. Do not parse it when using parameters. You should apply substitution first and create a function with one variable "x". Ranges for the function are not defined. The function may have one independent variable: x

Operators and functions

the following operators are supported:

• Subtraction: '2 - 2'
• Multiplication: '2 * 2'
• Division: '2 / 2'
• Exponential: '2 ^ 2' or ** (raise to a power)
• Unary Minus,Plus (Sign Operators): '+2 - (-2)'
• Modulo: '2 % 2'
the following functions are supported:
• abs: absolute value
• acos: arc cosine
• asin: arc sine
• atan: arc tangent
• cbrt: cubic root
• ceil: nearest upper integer
• cos: cosine
• cosh: hyperbolic cosine
• exp: euler's number raised to the power (e^x)
• floor: nearest lower integer
• log: logarithm natural (base e)
• log10: logarithm 10 natural(base e)
• sin: sine
• sinh: hyperbolic sine
• sqrt: square root
• tan: tangent
• tanh: hyperbolic tangent
It also recognizes the pi (or Pi) values.
Parameters:
`title` - title
`name` - definition
`parse` - parse or not. Do not parse when using parameters.
• #### F1D

`public F1D(String title,           double[] pars,           boolean parse)`
Create a polynomial analytical function using a list of values. Example: pars+pars*x+pars*x*x +pars*x*x*x
Parameters:
`title` - Title of this function
`pars` - array of coefficients for polynomial function
`parse` - set true if it should be parsed
• #### F1D

`public F1D(String name,           boolean parse)`
Build a function. The function may have one independent variable: x. Function can have parameters, in which case set parsing to false. You can parse this function later after substitution of numeric parameter.

Operators and functions

the following operators are supported:

• Subtraction: '2 - 2'
• Multiplication: '2 * 2'
• Division: '2 / 2'
• Exponential: '2 ^ 2' or ** (raise to a power)
• Unary Minus,Plus (Sign Operators): '+2 - (-2)'
• Modulo: '2 % 2'
the following functions are supported:
• abs: absolute value
• acos: arc cosine
• asin: arc sine
• atan: arc tangent
• cbrt: cubic root
• ceil: nearest upper integer
• cos: cosine
• cosh: hyperbolic cosine
• exp: euler's number raised to the power (e^x)
• floor: nearest lower integer
• log: logarithm natural (base e)
• sin: sine
• sinh: hyperbolic sine
• sqrt: square root
• tan: tangent
• tanh: hyperbolic tangent
Parameters:
`name` - name
`parse` - is parsed or not?
• #### F1D

`public F1D(String title,           ExpressionBuilder function)`
Create a function in 1D. 500 points are used between Min and Max for evaluation. The function may have x as independent variable.
Parameters:
`title` - Title
`function` - ExpressionBuilder
`min` - Min value
`max` - Max value
• #### F1D

`public F1D(Expression calc,           double min,           double max)`
Create a function from the expression. The function is in the range.
Parameters:
`calc` - expression
`min` - Min value
`max` - Max value
• #### F1D

`public F1D(String title,           Expression calc,           double min,           double max)`
Create a function in 1D. 500 points are used between Min and Max for evaluation. The function may have x as independent variable.
Parameters:
`title` - Title
`function` - Expression after parsing and building
• #### F1D

`public F1D(String title,           Expression calc)`
Create a function in 1D. 500 points are used between Min and Max for evaluation. The function may have x as independent variable.
Parameters:
`title` - Title
`function` - Expression after parsing and building
• #### F1D

`public F1D(Expression calc)`
Create a function in 1D. The function may have x as independent variable.
Parameters:
`function` - expression
• #### F1D

`public F1D(ExpressionBuilder function)`
Build a function.
Parameters:
`function` - input of expression
• #### F1D

`public F1D(IFunction iname)`
Create a F1D function from JAIDA IFunction. By default, 500 points for evaluation are used. No ranges are set.
Parameters:
`iname` - input IFunction
• #### F1D

`public F1D(String title,           IFunction iname)`
Create F1D function from JAIDA IFunction. By default 500 points are used
Parameters:
`title` - Title
`iname` - input IFunction
`min` - Min X values
`max` - Max X values
• ### Method Detail

• #### get

`public FProxy get()`
Get the proxy of this function used for serialization and non-graphical representations.
Parameters:
`proxy` - proxy of this function.
• #### parse

`public boolean parse()`
Parse the function. To speed up calculation of repertitive tasks, you can parse the function first.
Returns:
true if parsed without problems.
• #### eval

`public double eval(double x)`
Evaluate a function at a specific point in x
Parameters:
`x` - value in x for evaluation
Returns:
function value at x
• #### eval

`public double[] eval(double[] x)`
Evaluate a function for an array of x-values
Parameters:
`x` - array of values in x for evaluation
Returns:
array of function values
• #### eval

`public void eval(double xMin,                 double xMax)`
Evaluate a function for graphic representation. Number of points for evaluations is 500.
Parameters:
`XMin` - value in x
`XMax` - value in x
• #### eval

`public void eval()`
Evaluate a function for graphic representation. The function is assumed to me ranged (the range is defined during the initialization).
• #### eval

`public void eval(double min,                 double max,                 int Npoints)`
Evaluate a function for graphic representation. Number of points for evaluations is 500.
Parameters:
`Min` - value in x
`Max` - value in x
`Number` - of evaluation points
• #### doc

`public void doc()`
Show online documentation.
• #### toTable

`public void toTable()`
Print the F1D function to a Table in a separate Frame. The numbers are formatted to scientific format. One can sort and search the data in this table (data cannot be modified)
Parameters:
`min` -
`max` -
• #### setPar

`public void setPar(String parameter,                   double value)`
Replace abstract parameter with the value (double). Case sensitive!
Parameters:
`parameter` - parameter name
`value` - value to be inserted
• #### getH1D

`public H1D getH1D()`
Return H1D histogram from F1D function. The number of points are given by setPoints() method, but the default 500 is used if not given. Min and Max values are given during the function initialisation (ranged function) The number of points is 500 by default.
Returns:
histogram
• #### getH1D

`public H1D getH1D(double min,                  double max)`
Return H1D histogram from F1D function. The number of points are given by setPoints() method, but the default 500 is used if not given. Min and Max values are given by the values used to parse the function.
Parameters:
`min` - value
`max` - value
Returns:
histogram
• #### getH1D

`public H1D getH1D(String hname,                  int bins,                  double hmin,                  double hmax)`
Return a Histogram given by the F1D function. All statistical characteristics of such histogram are meaningless. Bins and Min and Max values are user defined. The function is evaluated at the bin center which is important for small number of bins.
Parameters:
`hname` - Name of the histogram
`bins` - number of bins for histogram
`hmin` - min value of histogram
`hmax` - max value of histogram
Returns:
H1D histogram
• #### setPar

`public void setPar(String parameter,                   int value)`
Replace abstract parameter with the value (integer). Case sensitive. You will need to call parse() to finish this function.
Parameters:
`parameter` - parameter name
`value` - integer value to be inserted.
• #### 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(String name)`
Sets a name of the function, i.e. what will be used for evaluation
Parameters:
`name` - Name
• #### getName

`public String getName()`
Get the name of the function used for evaluation
Returns:
Name
• #### getParse

`public Expression getParse()`
Return parsed function. One can evaluate Y as: y =function.getResult(x), where function is what returned by this method.
Returns:
function
• #### setPoints

`public void setPoints(int bins)`
Sets the number points between Min and Max for evaluation
Parameters:
`bins` - Number of points
• #### integral

`public double integral()`
Integral using fastest trapezium rule method. This function return non-zero if it the range was defined during the initialization. The default number of points is 500. Increase it if needed more pecision.
Returns:
integral in the range defined during the initisliazation.
• #### integral

`public double integral(double min,                       double max)`
Integral using fastest trapezium rule method. It uses the default number of points (500).
Parameters:
`min` - the first ordinate.
`max` - the last ordinate.
• #### integral

`public double integral(String type,                       int N,                       double min,                       double max)`
Numerical integration. Define types as:
type="gauss4" - Gaussian integration formula (4 points)
type="gauss8" - Gaussian integration formula (8 points)
type="richardson" - Richardson extrapolation
type="simpson" - using Simpson's rule.
type="trapezium" - trapezium rule.
Parameters:
`type` - type of algorithm. Can be: "gauss4","gauss8","richardson","simpson","trapezium".
`N` - the number of strips to use for integration
`min` - the first ordinate.
`max` - the last ordinate.
Returns:
integral
• #### integral

`public double integral(int N,                       double min,                       double max)`
Numerical integration using trapezium rule.
Parameters:
`N` - the number of strips to use for integration
`min` - the first ordinate.
`max` - the last ordinate.
Returns:
integral
• #### getIFunction

`public IFunction getIFunction()`
Get Jaida function
Returns:
• #### getArrayX

`public double[] getArrayX()`
Get array of X-values after function after evaluation using the default number of points
Returns:
X-values
• #### getArrayY

`public double[] getArrayY()`
Get array of Y-values after function after evaluation using the default number of points
Returns:
Y-values
• #### isParsed

`public boolean isParsed()`
If the function is parsed correctly, return true. Use this check before drawing it.
Returns:
true if parsed.
• #### toMathML

`public String toMathML()`
Convert the function into MathML form.
Returns:
String representing this function in MathML.
• #### toJava

`public String toJava()`
Convert the function into Java code.
Returns:
String representing this function in Java.
• #### simplify

`public boolean simplify()`
Try to simplify this function. It is often useful to rewrite an expression in term of elementary functions (log, exp, frac, sqrt, implicit roots), using the "elementary()" before simplifying it. Retrieve the simplified name as a string using getName() method.
Returns:
false if error occurs. Retrieve this error as a string using getException().
• #### elementary

`public boolean elementary()`
Convert this function rewrite in term of elementary functions (log, exp, frac, sqrt, implicit roots) This is useful before simplifying function. Retrieve the simplified name as a string using getName() method.
Returns:
false if error occurs. Retrieve this error as a string using getException().
• #### expand

`public boolean expand()`
Convert this function rewrite in expanded form. Retrieve the expanded name as a string using getName() method.
Returns:
false if error occurs. Retrieve this error as a string using getException().
• #### factorize

`public boolean factorize()`
Convert this function rewrite in factorized form (if can). Retrieve the expanded name as a string using getName() method.
Returns:
false if error occurs. Retrieve this error as a string using getException().
• #### numeric

`public boolean numeric()`
Perform some numeric substitutions. Examples: exp(1) should be 2.71828182, "pi" should be 3.14159 etc. Retrieve the expanded name as a string using getName() method.
Returns:
false if error occurs. Retrieve this error as a string using getException().
• #### differentiate

`public double[] differentiate(int N,                              double min,                              double max)`
Numerical differentiation.
Parameters:
`N` - the number of points to use.
`min` - the first ordinate.
`max` - the last ordinate.
Returns:
array with differentials
• #### differentiate

`public double[] differentiate()`
Numerical differentiation of a function. Range of the function is given during the initisalisation (ranged function)
Returns:
array with differentials
• #### getPoints

`public int getPoints()`
Get the number of points used for plotting, integration and differentiation.
Returns:
Number of points
• #### getException

`public String getException()`
If error occurs at some step, this is the way to retrieve it.
Returns:
last exception happened in any method of this class.
• #### 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
• #### set

`public void set(FProxy f)`
Set proxy function
Parameters:
`f` -
• #### getMax

`public double getMax()`
Get the maximum value in X
Returns:
Maximal value
• #### toString

`public String toString()`
Get this function as a string.
Overrides:
`toString` in class `Object`
Returns:
Convert to string.

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