de.lmu.ifi.dbs.elki.visualization.projections

Class SimpleParallel

java.lang.Object

de.lmu.ifi.dbs.elki.visualization.projections.SimpleParallel

All Implemented Interfaces:

Projection, ProjectionParallel, VisualizationItem

public class SimpleParallel
extends java.lang.Object
implements ProjectionParallel

Simple parallel projection Scaled space: reordered, scaled and inverted. Lower dimensionality! [0:1] Render space: not used here; no recentering needed.

Since:

0.5.0

Author:

Robert Rödler, Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
(package private) int[]	dimOrder Ordering of dimensions
(package private) static byte	FLAG_HIDDEN Flag for visibility
(package private) static byte	FLAG_INVERTED Flag for inverted dimensions TODO: handle inversions via scales?
(package private) byte[]	flags Flags for the dimensions
private Projector	p Projector
private LinearScale[]	scales Scales
(package private) int	visDims Number of visible dimensions

Fields inherited from interface de.lmu.ifi.dbs.elki.visualization.projections.Projection

INVSCALE, SCALE

Constructor Summary

Constructors

Constructor and Description
SimpleParallel(Projector p, LinearScale[] scales) Constructor.

Method Summary

Modifier and Type	Method and Description
double[]	fastProjectDataToRenderSpace(double[] data) Fast project a vector from data to render space
double	fastProjectDataToRenderSpace(double value, int dim) Project the value of a single axis to its display value
double[]	fastProjectDataToRenderSpace(NumberVector data) Fast project a vector from data to render space
double	fastProjectRenderToDataSpace(double v, int projdim) Project a display value back to the original data space
int	getAxisForDim(int truedim) Find the axis assigned to the given dimension.
LinearScale	getAxisScale(int axis) Get scale for the given axis
int	getDimForAxis(int pos) Get the dimension for the given axis number
int	getDimForVisibleAxis(int pos) Get the dimension for the given visible axis
int	getInputDimensionality() Get the input dimensionality of the projection.
java.lang.String	getMenuName() Name to display in the menu.
Projector	getProjector() Projector used for generating this projection.
LinearScale	getScale(int dim) Get the scale class for a particular dimension.
int	getVisibleDimensions() Get the number of visible dimension.
boolean	isAxisInverted(int axis) Get inversion flag of axis.
boolean	isAxisVisible(int dim) Test whether the current axis is visible
protected boolean	isDimHidden(int truedim)
boolean	isDimInverted(int truedim) Get inversion flag of dimension.
void	moveAxis(int src, int dest) shift a dimension to another position
void	setAxisInverted(int axis, boolean bool) Set inversion flag of axis.
void	setAxisVisible(int dim, boolean vis) Set the visibility of the axis.
void	setDimInverted(int truedim, boolean bool) Set inversion flag of a dimension.
void	swapAxes(int a, int b) Exchange axes A and B
void	toggleAxisInverted(int axis) Toggle inverted flag of axis.
void	toggleAxisVisible(int dim) Toggle visibility of the axis.
void	toggleDimInverted(int truedim) Toggle inverted flag of dimension.

Methods inherited from class java.lang.Object

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

Field Detail

visDims

int visDims

Number of visible dimensions

flags

byte[] flags

Flags for the dimensions

dimOrder

int[] dimOrder

Ordering of dimensions

scales

private LinearScale[] scales

Scales

p

private Projector p

Projector

FLAG_HIDDEN

static final byte FLAG_HIDDEN

Flag for visibility

See Also:

Constant Field Values

FLAG_INVERTED

static final byte FLAG_INVERTED

Flag for inverted dimensions TODO: handle inversions via scales?

See Also:

Constant Field Values

Constructor Detail

SimpleParallel

public SimpleParallel(Projector p,
                      LinearScale[] scales)

Constructor.

Parameters:

p - Projector

scales - Scales to use

Method Detail

getScale

public LinearScale getScale(int dim)

Description copied from interface: Projection

Get the scale class for a particular dimension.

Specified by:

getScale in interface Projection

Parameters:

dim - Dimension

Returns:

Scale class

isAxisInverted

public boolean isAxisInverted(int axis)

Description copied from interface: ProjectionParallel

Get inversion flag of axis.

Specified by:

isAxisInverted in interface ProjectionParallel

Parameters:

axis - Axis (reordered) position

Returns:

Inversion flag

setAxisInverted

public void setAxisInverted(int axis,
                            boolean bool)

Description copied from interface: ProjectionParallel

Set inversion flag of axis.

Specified by:

setAxisInverted in interface ProjectionParallel

Parameters:

axis - Axis (reordered) position

bool - Value of inversion flag

toggleAxisInverted

public void toggleAxisInverted(int axis)

Description copied from interface: ProjectionParallel

Toggle inverted flag of axis.

Specified by:

toggleAxisInverted in interface ProjectionParallel

Parameters:

axis - Axis (reordered) position

isDimInverted

public boolean isDimInverted(int truedim)

Description copied from interface: ProjectionParallel

Get inversion flag of dimension.

Specified by:

isDimInverted in interface ProjectionParallel

Parameters:

truedim - Dimension in original numbering

Returns:

Inversion flag

setDimInverted

public void setDimInverted(int truedim,
                           boolean bool)

Description copied from interface: ProjectionParallel

Set inversion flag of a dimension.

Specified by:

setDimInverted in interface ProjectionParallel

Parameters:

truedim - Dimension in original numbering

bool - Value of inversion flag

toggleDimInverted

public void toggleDimInverted(int truedim)

Description copied from interface: ProjectionParallel

Toggle inverted flag of dimension.

Specified by:

toggleDimInverted in interface ProjectionParallel

Parameters:

truedim - Dimension in original numbering

getAxisScale

public LinearScale getAxisScale(int axis)

Description copied from interface: ProjectionParallel

Get scale for the given axis

Specified by:

getAxisScale in interface ProjectionParallel

Parameters:

axis - Axis (reordered) position

Returns:

Axis scale

isDimHidden

protected boolean isDimHidden(int truedim)

isAxisVisible

public boolean isAxisVisible(int dim)

Description copied from interface: ProjectionParallel

Test whether the current axis is visible

Specified by:

isAxisVisible in interface ProjectionParallel

Parameters:

dim - Axis (reordered) position

Returns:

Visibility of axis

setAxisVisible

public void setAxisVisible(int dim,
                           boolean vis)

Description copied from interface: ProjectionParallel

Set the visibility of the axis.

Specified by:

setAxisVisible in interface ProjectionParallel

Parameters:

dim - Axis number

vis - Visibility status

toggleAxisVisible

public void toggleAxisVisible(int dim)

Description copied from interface: ProjectionParallel

Toggle visibility of the axis.

Specified by:

toggleAxisVisible in interface ProjectionParallel

Parameters:

dim - Axis number

getVisibleDimensions

public int getVisibleDimensions()

Description copied from interface: ProjectionParallel

Get the number of visible dimension.

Specified by:

getVisibleDimensions in interface ProjectionParallel

Returns:

Number of visible dimensions

getDimForAxis

public int getDimForAxis(int pos)

Description copied from interface: ProjectionParallel

Get the dimension for the given axis number

Specified by:

getDimForAxis in interface ProjectionParallel

Parameters:

pos - Axis number

Returns:

Dimension

getDimForVisibleAxis

public int getDimForVisibleAxis(int pos)

Description copied from interface: ProjectionParallel

Get the dimension for the given visible axis

Specified by:

getDimForVisibleAxis in interface ProjectionParallel

Parameters:

pos - Axis number (visible axes only)

Returns:

Dimension

swapAxes

public void swapAxes(int a,
                     int b)

Description copied from interface: ProjectionParallel

Exchange axes A and B

Specified by:

swapAxes in interface ProjectionParallel

Parameters:

a - First axis

b - Second axis

moveAxis

public void moveAxis(int src,
                     int dest)

Description copied from interface: ProjectionParallel

shift a dimension to another position

Specified by:

moveAxis in interface ProjectionParallel

Parameters:

src - axis to shift

dest - new position

fastProjectDataToRenderSpace

public double[] fastProjectDataToRenderSpace(NumberVector data)

Description copied from interface: ProjectionParallel

Fast project a vector from data to render space

Specified by:

fastProjectDataToRenderSpace in interface ProjectionParallel

Parameters:

data - Input vector

Returns:

Vector with reordering, inversions and scales applied.

fastProjectDataToRenderSpace

public double[] fastProjectDataToRenderSpace(double[] data)

Description copied from interface: ProjectionParallel

Fast project a vector from data to render space

Specified by:

fastProjectDataToRenderSpace in interface ProjectionParallel

Parameters:

data - Input vector

Returns:

Vector with reordering, inversions and scales applied.

fastProjectRenderToDataSpace

public double fastProjectRenderToDataSpace(double v,
                                           int projdim)

Description copied from interface: ProjectionParallel

Project a display value back to the original data space

Specified by:

fastProjectRenderToDataSpace in interface ProjectionParallel

Parameters:

v - transformed value

projdim - Axis to use for scaling and inversion

Returns:

Original value

fastProjectDataToRenderSpace

public double fastProjectDataToRenderSpace(double value,
                                           int dim)

Description copied from interface: ProjectionParallel

Project the value of a single axis to its display value

Specified by:

fastProjectDataToRenderSpace in interface ProjectionParallel

Parameters:

value - Input value

dim - Axis to use for scaling and inversion

Returns:

Transformed value

getAxisForDim

public int getAxisForDim(int truedim)

Description copied from interface: ProjectionParallel

Find the axis assigned to the given dimension.

Specified by:

getAxisForDim in interface ProjectionParallel

Parameters:

truedim - Dimension

Returns:

Axis number

getInputDimensionality

public int getInputDimensionality()

Description copied from interface: Projection

Get the input dimensionality of the projection.

Specified by:

getInputDimensionality in interface Projection

Returns:

Input dimensionality

getMenuName

public java.lang.String getMenuName()

Description copied from interface: VisualizationItem

Name to display in the menu. May be null or empty string.

Specified by:

getMenuName in interface VisualizationItem

Returns:

Menu name.

getProjector

public Projector getProjector()

Description copied from interface: Projection

Projector used for generating this projection.

Specified by:

getProjector in interface Projection

Returns:

Projector