org.matheclipse.core.convert

Class Convert

java.lang.Object

org.matheclipse.core.convert.Convert

public class Convert
extends java.lang.Object

Conversions between an IExpr object and misc other object class types

Method Summary

Modifier and Type	Method and Description
static IExpr	doubleToExprTranspose(double[][] dd) Convert a matrix of double values to a transposed Symja matrix of List[List[...], ...]
static org.apache.commons.math4.linear.FieldMatrix<IExpr>	list2Matrix(IAST listMatrix) Returns a FieldMatrix if possible.
static org.apache.commons.math4.linear.FieldMatrix<IExpr>	list2Matrix(IAST listMatrix, IAST listVector) Return the augmented FiledMatrix listMatrix | listVector
static org.apache.commons.math4.linear.RealMatrix	list2RealMatrix(IAST listMatrix) Returns a RealMatrix if possible.
static org.apache.commons.math4.linear.RealVector	list2RealVector(IAST listVector) Returns a RealVector if possible.
static org.apache.commons.math4.linear.FieldVector<IExpr>	list2Vector(IAST listVector)
static IAST	matrix2List(org.apache.commons.math4.linear.FieldMatrix<IExpr> matrix) Converts a FieldMatrix to the list expression representation.
static IExpr	polynomialFunction2Expr(double[] coefficients, ISymbol sym) Converts an array of coefficients into the (polynomial) expression representation.
static IExpr	polynomialFunction2Expr(org.apache.commons.math4.analysis.polynomials.PolynomialFunction pf, ISymbol sym) Converts a PolynomialFunction to the (polynomial) expression representation.
static IAST	realMatrix2List(org.apache.commons.math4.linear.RealMatrix matrix) Converts a RealMatrix to the list expression representation.
static IAST	realVector2List(org.apache.commons.math4.linear.RealVector vector) Convert a RealVector to a IAST list.
static IAST	vector2List(org.apache.commons.math4.linear.FieldVector<IExpr> vector) Convert a FieldVector to a IAST list.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

doubleToExprTranspose

public static IExpr doubleToExprTranspose(double[][] dd)

Convert a matrix of double values to a transposed Symja matrix of List[List[...], ...].

Parameters:

dd -

Returns:

F.NIL if no conversion was possible

list2RealMatrix

public static org.apache.commons.math4.linear.RealMatrix list2RealMatrix(IAST listMatrix)
                                                                  throws java.lang.ClassCastException,
                                                                         java.lang.IndexOutOfBoundsException

Returns a RealMatrix if possible.

Parameters:

listMatrix -

Returns:

a RealMatrix or null if the given list is no matrix.

Throws:

WrongArgumentType - if not all elements are convertable to a double value.

java.lang.IndexOutOfBoundsException

java.lang.ClassCastException

realMatrix2List

public static IAST realMatrix2List(org.apache.commons.math4.linear.RealMatrix matrix)

Converts a RealMatrix to the list expression representation.

Parameters:

matrix -

Returns:

F.NIL if no conversion was possible

list2RealVector

public static org.apache.commons.math4.linear.RealVector list2RealVector(IAST listVector)
                                                                  throws java.lang.ClassCastException,
                                                                         java.lang.IndexOutOfBoundsException

Returns a RealVector if possible.

Parameters:

listVector -

Returns:

a RealVector or null if the given list is no matrix.

Throws:

WrongArgumentType - if not all elements are convertable to a double value.

java.lang.IndexOutOfBoundsException

java.lang.ClassCastException

realVector2List

public static IAST realVector2List(org.apache.commons.math4.linear.RealVector vector)

Convert a RealVector to a IAST list.

Parameters:

vector -

Returns:

F.NIL if no conversion was possible

polynomialFunction2Expr

public static IExpr polynomialFunction2Expr(org.apache.commons.math4.analysis.polynomials.PolynomialFunction pf,
                                            ISymbol sym)

Converts a PolynomialFunction to the (polynomial) expression representation.

Parameters:

pf - the polynomial function

sym - the name of the polynomial functions variable

Returns:

polynomialFunction2Expr

public static IExpr polynomialFunction2Expr(double[] coefficients,
                                            ISymbol sym)

Converts an array of coefficients into the (polynomial) expression representation.

Parameters:

coefficients - the coefficients of the polynomial function

sym - the name of the polynomial functions variable

Returns:

list2Matrix

public static org.apache.commons.math4.linear.FieldMatrix<IExpr> list2Matrix(IAST listMatrix)
                                                                      throws java.lang.ClassCastException,
                                                                             java.lang.IndexOutOfBoundsException

Returns a FieldMatrix if possible.

Parameters:

listMatrix -

Returns:

Throws:

java.lang.ClassCastException

java.lang.IndexOutOfBoundsException

list2Matrix

public static org.apache.commons.math4.linear.FieldMatrix<IExpr> list2Matrix(IAST listMatrix,
                                                                             IAST listVector)
                                                                      throws java.lang.ClassCastException,
                                                                             java.lang.IndexOutOfBoundsException

Return the augmented FiledMatrix listMatrix | listVector

Parameters:

listMatrix -

listVector -

Returns:

Throws:

java.lang.ClassCastException

java.lang.IndexOutOfBoundsException

list2Vector

public static org.apache.commons.math4.linear.FieldVector<IExpr> list2Vector(IAST listVector)
                                                                      throws java.lang.ClassCastException,
                                                                             java.lang.IndexOutOfBoundsException

Throws:

java.lang.ClassCastException

java.lang.IndexOutOfBoundsException

matrix2List

public static IAST matrix2List(org.apache.commons.math4.linear.FieldMatrix<IExpr> matrix)

Converts a FieldMatrix to the list expression representation.

Parameters:

matrix -

Returns:

F.NIL if no conversion was possible

vector2List

public static IAST vector2List(org.apache.commons.math4.linear.FieldVector<IExpr> vector)

Convert a FieldVector to a IAST list.

Parameters:

vector -

Returns:

F.NIL if no conversion was possible