simulator.diffusionSolver.multigrid.MultigridUtils Class Reference

Static Public Member Functions
static int	order (int n) throws Exception
static void	restrict2 (SoluteGrid fineGrid, SoluteGrid coarsegrid)
	Restricts the data in matrix u to a grid one order coarser. Restriction excludes border points. More...
static void	restrict (SoluteGrid fineGrid, SoluteGrid coarseGrid)
static void	restrictBoundaryLayer2 (SoluteGrid fineGrid, SoluteGrid coarseGrid, double[][][] bl)
static void	restrictBoundaryLayer (SoluteGrid fineGrid, SoluteGrid coarseGrid, double[][][] bl)
static void	setValues (double u[][][], double val)
static void	setValues (boolean u[][][], boolean val)
static float[][][]	subtract (float a[][][], float b[][][])
static float	min (float a[][][])
static float	max (float a[][][])
static float	computeNorm (double[][][] a)
static float	computeSum (float[][][] a)
static String	coreMatrixToString (float[][][] matrix)
static String	coreMatrixToString (boolean[][][] matrix)
static String	matrixToString (float[][][] matrix)
static float[][]	readSquareMatrixFromFile (String fileName)

Static Public Attributes
static final String	SEPARATOR = " "

Member Function Documentation

static float simulator.diffusionSolver.multigrid.MultigridUtils.computeNorm ( double  a[][][] )

static

compute the norm of matrix (exceptuating padding)

Parameters

a

Returns

the norm of the matrix

static float simulator.diffusionSolver.multigrid.MultigridUtils.computeSum ( float  a[][][] )

static

Parameters

a

Returns

the sum of all elements of a

static String simulator.diffusionSolver.multigrid.MultigridUtils.coreMatrixToString ( float  matrix[][][] )

static

Return values in a matrix (excluding boundaries) as a formatted string

Parameters

matrix

to output as string

Returns

string output

static String simulator.diffusionSolver.multigrid.MultigridUtils.coreMatrixToString ( boolean  matrix[][][] )

static

Return values in a matrix (excluding boundaries) as a formatted string. This method is used for boolean matrices. Values in output are 1 (for true) or 0 (for false)

Parameters

matrix

to output as string

Returns

string output

static String simulator.diffusionSolver.multigrid.MultigridUtils.matrixToString ( float  matrix[][][] )

static

Write the full matrix to a string

Parameters

matrix

Returns

a string with the matrix (space separated values)

static float simulator.diffusionSolver.multigrid.MultigridUtils.max ( float  a[][][] )

static

Find maximum value in a 3D matrix

Parameters

a

Returns

the maximum value in the matrix

static float simulator.diffusionSolver.multigrid.MultigridUtils.min ( float  a[][][] )

static

Find minimum value in a 3D matrix

Parameters

a

Returns

the minimum value in the matrix

static int simulator.diffusionSolver.multigrid.MultigridUtils.order ( int  n ) throws Exception

static

retuns log2(n - 1) * 0.5

Parameters

n

Returns

order of multigrid

Exceptions

InvalidValueException

static float [][] simulator.diffusionSolver.multigrid.MultigridUtils.readSquareMatrixFromFile ( String  fileName )

static

Create a 2D graphics

Parameters

fileName

the file to parse

Returns

2D matrix

static void simulator.diffusionSolver.multigrid.MultigridUtils.restrict ( SoluteGrid  fineGrid, SoluteGrid  coarseGrid  )

static

static void simulator.diffusionSolver.multigrid.MultigridUtils.restrict2 ( SoluteGrid  fineGrid, SoluteGrid  coarsegrid  )

static

Restricts the data in matrix u to a grid one order coarser. Restriction excludes border points.

Restricts the data in matrix u to a grid one order coarser. Restriction excludes border points.

Parameters

fineGrid	finer grid
coarsegrid	coarser grid

static void simulator.diffusionSolver.multigrid.MultigridUtils.restrictBoundaryLayer ( SoluteGrid  fineGrid, SoluteGrid  coarseGrid, double  bl[][][]  )

static

static void simulator.diffusionSolver.multigrid.MultigridUtils.restrictBoundaryLayer2 ( SoluteGrid  fineGrid, SoluteGrid  coarseGrid, double  bl[][][]  )

static

Restricts the data in matrix u to a grid one order coarser. Restriction excludes border points for points inside the boundary layer, defined by data in bl. Restriction excludes border points and points outside the boundary layer (where bl >= 0.5). Points outside boundary layer are skipped and, therefore, preserve their original value.

Parameters

fineGrid	finer grid
coarseGrid	coarser grid
bl	boundary layer at coarser grid

static void simulator.diffusionSolver.multigrid.MultigridUtils.setValues ( double  u[][][], double  val  )

static

Set all entries of a matrix to value val

Parameters

u
val

static void simulator.diffusionSolver.multigrid.MultigridUtils.setValues ( boolean  u[][][], boolean  val  )

static

Set all entries of a boolean matrix to value val

Parameters

u
val

static float [][][] simulator.diffusionSolver.multigrid.MultigridUtils.subtract ( float  a[][][], float  b[][][]  )

static

Create matrix c = a - b

Parameters

a
b

Returns

c = a-b

Member Data Documentation

final String simulator.diffusionSolver.multigrid.MultigridUtils.SEPARATOR = " "

static

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

• /home/kieran/Dropbox/workspace/iDynoMiCS/src/simulator/diffusionSolver/multigrid/MultigridUtils.java