ClusterGrid Class Reference

ClusterGrid is a function whose gridpoints are clustered tightly around the origin. More...

Inheritance diagram for ClusterGrid:

Collaboration diagram for ClusterGrid:

Public Member Functions
GridType	Type () override
	Returns the type of the grid (i.e. linear, optimal, etc) More...
int	ReverseMap (double r) override
	Returns the index of the nearest point below r. More...
void	Init (double start, double end, double cluster, int numpoints)
void	Write (IOSectionClass &outSection) override
void	Read (IOSectionClass &inSection) override
	ClusterGrid (double start, double end, double cluster, int numpoints)
	ClusterGrid ()
Public Member Functions inherited from Grid
double	operator() (int i) const
	The i'th point in the grid. More...
double *	data ()
Array< double, 1 > &	Points ()
virtual	~Grid ()

Public Attributes
double	Start
double	End
double	Cluster
Public Attributes inherited from Grid
double	Start
	First and last grid points. More...
double	End
int	NumPoints
	Number of points in the grid. More...

Private Attributes
double	x0
double	dri
double	rr

Additional Inherited Members
Protected Attributes inherited from Grid
Array< double, 1 >	grid
	Contains the grid points. More...

Detailed Description

ClusterGrid is a function whose gridpoints are clustered tightly around the origin.

Definition at line 578 of file Grid.h.

Constructor & Destructor Documentation

ClusterGrid() [1/2]

ClusterGrid ( double  start, double  end, double  cluster, int  numpoints  )

inline

Definition at line 626 of file Grid.h.

References Init().

{ Init(start, end, cluster, numpoints); }

ClusterGrid() [2/2]

ClusterGrid ( )

inline

Definition at line 627 of file Grid.h.

  { /* Do nothing */
  }

Member Function Documentation

Init()

void Init ( double  start, double  end, double  cluster, int  numpoints  )

inline

Definition at line 590 of file Grid.h.

References Cluster, dri, End, Grid::grid, Grid::NumPoints, Array< T, D, ALLOC >::resize(), rr, Start, and x0.

Referenced by ClusterGrid(), and Read().

  {
    Start     = start;
    End       = end;
    Cluster   = cluster;
    NumPoints = numpoints;

    x0  = (NumPoints - Cluster) / (1.0 - Cluster);
    dri = -(End - Start) * ((double)NumPoints - x0) * (1.0 - x0) / ((double)NumPoints - 1.0);
    rr  = Start - dri / (1.0 - x0);
    grid.resize(NumPoints);
    for (int i = 0; i < NumPoints; i++)
      grid(i) = rr + dri / (i + 1.0 - x0);
  }

Read()

void Read ( IOSectionClass &  inSection )

inlineoverridevirtual

Implements Grid.

Definition at line 615 of file Grid.h.

References Init(), and IOSectionClass::ReadVar().

  {
    double start, end, cluster;
    int numpoints;
    assert(inSection.ReadVar("Start", start));
    assert(inSection.ReadVar("End", end));
    assert(inSection.ReadVar("Cluster", cluster));
    assert(inSection.ReadVar("NumPoints", numpoints));
    Init(start, end, cluster, numpoints);
  }

ReverseMap()

int ReverseMap ( double  r )

inlineoverridevirtual

Returns the index of the nearest point below r.

Implements Grid.

Definition at line 588 of file Grid.h.

References dri, qmcplusplus::floor(), rr, and x0.

{ return ((int)floor(dri / (r - rr) - 1.0 + x0)); }

Type()

GridType Type ( )

inlineoverridevirtual

Returns the type of the grid (i.e. linear, optimal, etc)

Implements Grid.

Definition at line 586 of file Grid.h.

References CLUSTER.

{ return (CLUSTER); }

Write()

void Write ( IOSectionClass &  outSection )

inlineoverridevirtual

Implements Grid.

Definition at line 605 of file Grid.h.

References Cluster, End, Grid::grid, Grid::NumPoints, Start, and IOSectionClass::WriteVar().

  {
    outSection.WriteVar("Points", grid);
    outSection.WriteVar("Type", std::string("Cluster"));
    outSection.WriteVar("Start", Start);
    outSection.WriteVar("End", End);
    outSection.WriteVar("Cluster", Cluster);
    outSection.WriteVar("NumPoints", NumPoints);
  }

Member Data Documentation

Cluster

double Cluster

Definition at line 584 of file Grid.h.

Referenced by Init(), and Write().

dri

double dri

private

Definition at line 581 of file Grid.h.

Referenced by Init(), and ReverseMap().

End

double End

Definition at line 584 of file Grid.h.

Referenced by Init(), and Write().

rr

double rr

private

Definition at line 581 of file Grid.h.

Referenced by Init(), and ReverseMap().

Start

double Start

Definition at line 584 of file Grid.h.

Referenced by Init(), and Write().

x0

double x0

private

Definition at line 581 of file Grid.h.

Referenced by Init(), and ReverseMap().

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The documentation for this class was generated from the following file:

• /home/pk7/projects/qmc/for_cron_doxygen/qmcpack/src/QMCTools/ppconvert/src/common/Grid.h