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Reference Guide
ROOT::Minuit2::MinimumError Class Reference

MinimumError keeps the inv.

2nd derivative (inv. Hessian) used for calculating the Parameter step size (-V*g) and for the covariance Update (ErrorUpdator). The covariance matrix is equal to twice the inv. Hessian.

Definition at line 28 of file MinimumError.h.

Classes

struct  Data
 

Public Types

enum  Status {
  MnUnset , MnPosDef , MnMadePosDef , MnNotPosDef ,
  MnHesseFailed , MnInvertFailed , MnReachedCallLimit
}
 

Public Member Functions

 MinimumError (const MnAlgebraicSymMatrix &mat, double dcov)
 
 MinimumError (const MnAlgebraicSymMatrix &mat, Status status)
 
 MinimumError (unsigned int n)
 
double Dcovar () const
 
Status GetStatus () const
 
bool HasReachedCallLimit () const
 
bool HesseFailed () const
 
MnAlgebraicSymMatrix Hessian () const
 
bool InvertFailed () const
 
const MnAlgebraicSymMatrixInvHessian () const
 
bool IsAccurate () const
 
bool IsAvailable () const
 
bool IsMadePosDef () const
 
bool IsPosDef () const
 
bool IsValid () const
 
MnAlgebraicSymMatrix Matrix () const
 

Private Attributes

std::shared_ptr< DatafPtr
 

#include <Minuit2/MinimumError.h>

Member Enumeration Documentation

◆ Status

Enumerator
MnUnset 
MnPosDef 
MnMadePosDef 
MnNotPosDef 
MnHesseFailed 
MnInvertFailed 
MnReachedCallLimit 

Definition at line 31 of file MinimumError.h.

Constructor & Destructor Documentation

◆ MinimumError() [1/3]

ROOT::Minuit2::MinimumError::MinimumError ( unsigned int  n)
inline

Definition at line 42 of file MinimumError.h.

◆ MinimumError() [2/3]

ROOT::Minuit2::MinimumError::MinimumError ( const MnAlgebraicSymMatrix mat,
double  dcov 
)
inline

Definition at line 44 of file MinimumError.h.

◆ MinimumError() [3/3]

ROOT::Minuit2::MinimumError::MinimumError ( const MnAlgebraicSymMatrix mat,
Status  status 
)
inline

Definition at line 46 of file MinimumError.h.

Member Function Documentation

◆ Dcovar()

double ROOT::Minuit2::MinimumError::Dcovar ( ) const
inline

Definition at line 66 of file MinimumError.h.

◆ GetStatus()

Status ROOT::Minuit2::MinimumError::GetStatus ( ) const
inline

Definition at line 67 of file MinimumError.h.

◆ HasReachedCallLimit()

bool ROOT::Minuit2::MinimumError::HasReachedCallLimit ( ) const
inline

Definition at line 76 of file MinimumError.h.

◆ HesseFailed()

bool ROOT::Minuit2::MinimumError::HesseFailed ( ) const
inline

Definition at line 74 of file MinimumError.h.

◆ Hessian()

MnAlgebraicSymMatrix ROOT::Minuit2::MinimumError::Hessian ( ) const
inline

Definition at line 52 of file MinimumError.h.

◆ InvertFailed()

bool ROOT::Minuit2::MinimumError::InvertFailed ( ) const
inline

Definition at line 75 of file MinimumError.h.

◆ InvHessian()

const MnAlgebraicSymMatrix & ROOT::Minuit2::MinimumError::InvHessian ( ) const
inline

Definition at line 50 of file MinimumError.h.

◆ IsAccurate()

bool ROOT::Minuit2::MinimumError::IsAccurate ( ) const
inline

Definition at line 70 of file MinimumError.h.

◆ IsAvailable()

bool ROOT::Minuit2::MinimumError::IsAvailable ( ) const
inline

Definition at line 77 of file MinimumError.h.

◆ IsMadePosDef()

bool ROOT::Minuit2::MinimumError::IsMadePosDef ( ) const
inline

Definition at line 73 of file MinimumError.h.

◆ IsPosDef()

bool ROOT::Minuit2::MinimumError::IsPosDef ( ) const
inline

Definition at line 72 of file MinimumError.h.

◆ IsValid()

bool ROOT::Minuit2::MinimumError::IsValid ( ) const
inline

Definition at line 69 of file MinimumError.h.

◆ Matrix()

MnAlgebraicSymMatrix ROOT::Minuit2::MinimumError::Matrix ( ) const
inline

Definition at line 48 of file MinimumError.h.

Member Data Documentation

◆ fPtr

std::shared_ptr<Data> ROOT::Minuit2::MinimumError::fPtr
private

Definition at line 86 of file MinimumError.h.

Libraries for ROOT::Minuit2::MinimumError:
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The documentation for this class was generated from the following file: