MakeKspaceMap Namespace Reference

This modules contains routines to set up the K space for the mode coupling problem on a rectangular grid. More...

Classes
struct	KMap
Functions
subroutine	KMapAlloc (Kspace)
	Allocates the KMap array given the map dimensions etc. and fills up the KXY array in the correct convention.
subroutine	KMapFree (Kspace)
	DeAllocates the KMap.
subroutine	KMapCheckAlloc (Kspace)
	Checks whether a KMap is allocated.
subroutine	KMapAllocAClone (Kspace, KspaceClone)
	Creates an empty clone of a KMap.
subroutine	KMapSwitchConvention (Kspace)
	Switches the convention of a KMap from FFTW to LOGICAL and vice versa.
subroutine	KMapSetupDict (Kpower, power)
subroutine	KMapFillWithPower (Kpower, power)
	given a power spectrum populates each pix in the KMap with the interpolated value of P_k for the value of K in that pixel.
subroutine	KMapMakeGaussRanFromPower (Kpower, power)
	Slow version of GRF generation algorithm.
subroutine	KMapMakeGaussRanFast (Kpower, KGRF)
	Faster version of GRF generation algorithm. Made faster by passing in a KMap 'Kpower' filled with power. Since this has to done once, by call KMapFillwithPower a lot of time is saved for iterations, becasue the interpolation for finding the value of pk at k does not have to be repeated.
subroutine	KMapTrim (Kspace, KspaceTrimmed, maxK)
subroutine	KMapCreateKspaceMask (Kspace, verticalStripeLimit, slantStripe1, slantStripe2)
	Creates a K-space mask to apply before anular binning.
subroutine	KMapWrite (Kspace, outname, overwrite)
subroutine	KMapRead (Kspace, fname)
real(dp)	gettime ()
Variables
integer, parameter	fftw_convention = 101
	This convension is the same as returned by FFTW of IDL FFT.
integer, parameter	logical_convention = 100
	This convension is the same as what one gets after shifting the 0,0 mode to the center in K space.
logical(LGT)	Random_Number_Initialized

---

Detailed Description

This modules contains routines to set up the K space for the mode coupling problem on a rectangular grid.

Author:

Sudeep Das and Amir Hajian, Princeton University

Version:

Time-stamp: <2010-02-26 18:42:14 sudeep>

---

Function Documentation

real(dp) MakeKspaceMap::gettime

(

)

subroutine MakeKspaceMap::KMapAlloc

(

type(KMap)

Kspace

)

Allocates the KMap array given the map dimensions etc. and fills up the KXY array in the correct convention.

subroutine MakeKspaceMap::KMapAllocAClone	(	type(KMap)	Kspace,
		type(KMap)	KspaceClone
	)

Creates an empty clone of a KMap.

subroutine MakeKspaceMap::KMapCheckAlloc

(

type(KMap)

Kspace

)

Checks whether a KMap is allocated.

subroutine MakeKspaceMap::KMapCreateKspaceMask	(	type(kMap)	Kspace,
		real(dp),intent(in),optional	verticalStripeLimit,
		real(dp),intent(in),optional	slantStripe1,
		real(dp),intent(in),optional	slantStripe2
	)

Creates a K-space mask to apply before anular binning.

Parameters:

verticalStripeLimit	(optional) creates a vertical stripe (-l,l)
slantStripe1	creates a slant stripe
slantStripe2	creates another slant stripe

subroutine MakeKspaceMap::KMapFillWithPower	(	type (KMap)	Kpower,
		type (PowSpec)	Power
	)

given a power spectrum populates each pix in the KMap with the interpolated value of P_k for the value of K in that pixel.

subroutine MakeKspaceMap::KMapFree

(

type(KMap)

Kspace

)

DeAllocates the KMap.

subroutine MakeKspaceMap::KMapMakeGaussRanFast	(	type(KMap),intent(in)	Kpower,
		type(KMap)	KGRF
	)

Faster version of GRF generation algorithm. Made faster by passing in a KMap 'Kpower' filled with power. Since this has to done once, by call KMapFillwithPower a lot of time is saved for iterations, becasue the interpolation for finding the value of pk at k does not have to be repeated.

subroutine MakeKspaceMap::KMapMakeGaussRanFromPower	(	type (KMap)	Kpower,
		type (PowSpec)	Power
	)

Slow version of GRF generation algorithm.

subroutine MakeKspaceMap::KMapRead	(	type (KMap)	kspace,
		character(len=*)	fname
	)

subroutine MakeKspaceMap::KMapSetupDict	(	type (KMap)	Kpower,
		type (PowSpec)	Power
	)

subroutine MakeKspaceMap::KMapSwitchConvention

(

type(KMap)

Kspace

)

Switches the convention of a KMap from FFTW to LOGICAL and vice versa.

subroutine MakeKspaceMap::KMapTrim	(	type(KMap)	Kspace,
		type(KMap)	KspaceTrimmed,
		real(dp)	maxK
	)

subroutine MakeKspaceMap::KMapWrite	(	type(KMap)	Kspace,
		character (len=*)	outname,
		logical(LGT),intent(in),optional	overwrite
	)

---

Variable Documentation

integer,parameter MakeKspaceMap::fftw_convention = 101

This convension is the same as returned by FFTW of IDL FFT.

integer,parameter MakeKspaceMap::logical_convention = 100

This convension is the same as what one gets after shifting the 0,0 mode to the center in K space.

logical(LGT) MakeKspaceMap::Random_Number_Initialized

---