java.lang.Object
- uk.ac.starlink.ttools.plot2.layer.SpectrogramPlotter

All Implemented Interfaces:

Plotter<SpectrogramPlotter.SpectroStyle>
```
public class SpectrogramPlotter
extends java.lang.Object
implements Plotter<SpectrogramPlotter.SpectroStyle>
```
Plotter for spectrograms. A spectrogram is a spectrum represented as a vertical line of pixels at successive positions in a time series (time axis horizontal, spectral axis vertical).

Since:

16 Jul 2013

Author:

Mark Taylor

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static interface`	`SpectrogramPlotter.ChannelGrid`	Defines the spectrum frequency channels.
`static class`	`SpectrogramPlotter.SpectroStyle`	Style subclass for SpectrogramPlotter.

Constructor Summary

Constructors
Constructor Description

SpectrogramPlotter(FloatingCoord xCoord)
Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`PlotLayer`	`createLayer(DataGeom geom, DataSpec dataSpec, SpectrogramPlotter.SpectroStyle style)`	The supplied `geom` is ignored.
`SpectrogramPlotter.SpectroStyle`	`createStyle(ConfigMap config)`	Creates a style that can be used when creating a plot layer.
`CoordGroup`	`getCoordGroup()`	Returns an object describing which data coordinates are used for this plotter and how they are arranged in supplied DataSpec objects.
`int`	`getExtentCoordIndex()`	Returns the coordinate index for the time extent coordinate.
`java.lang.String`	`getPlotterDescription()`	Returns an XML description of this plotter.
`javax.swing.Icon`	`getPlotterIcon()`	Returns an icon for this plotter for use in user interface.
`java.lang.String`	`getPlotterName()`	Returns the name of this plotter for use in user interface.
`java.lang.Object`	`getRangeStyleKey(SpectrogramPlotter.SpectroStyle style)`	Returns an opaque object characterising the region of the plot surface covered when using a given plotter style.
`int`	`getSpectrumCoordIndex()`	Returns the coordinate index for the spectral coordinate.
`ConfigKey<?>[]`	`getStyleKeys()`	Returns the configuration keys used to configure style for this plotter.
`boolean`	`hasReports()`	Indicates whether the drawings produced by this plotter will return general interest report information to upstream plotting code.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SpectrogramPlotter
```
public SpectrogramPlotter(FloatingCoord xCoord)
```
    Constructor.
    
    Parameters:
    
    xCoord - horizontal axis coordinate
- Method Detail
  - getSpectrumCoordIndex
```
public int getSpectrumCoordIndex()
```
    Returns the coordinate index for the spectral coordinate.
    
    Returns:
    
    spectrum coordinate index
  - getExtentCoordIndex
```
public int getExtentCoordIndex()
```
    Returns the coordinate index for the time extent coordinate.
    
    Returns:
    
    time extent coordinate index
  - getPlotterName
```
public java.lang.String getPlotterName()
```
    Description copied from interface: Plotter
    
    Returns the name of this plotter for use in user interface.
    
    Specified by:
    
    getPlotterName in interface Plotter<SpectrogramPlotter.SpectroStyle>
    
    Returns:
    
    user-directed plotter name
  - getPlotterIcon
```
public javax.swing.Icon getPlotterIcon()
```
    Description copied from interface: Plotter
    
    Returns an icon for this plotter for use in user interface.
    
    Specified by:
    
    getPlotterIcon in interface Plotter<SpectrogramPlotter.SpectroStyle>
    
    Returns:
    
    plotter icon
  - getPlotterDescription
```
public java.lang.String getPlotterDescription()
```
    Description copied from interface: Plotter
    
    Returns an XML description of this plotter.
    Note: really this should appear at the LayerType level.
    
    Specified by:
    
    getPlotterDescription in interface Plotter<SpectrogramPlotter.SpectroStyle>
    
    Returns:
    
    one or more <p> elements
  - getCoordGroup
```
public CoordGroup getCoordGroup()
```
    Description copied from interface: Plotter
    
    Returns an object describing which data coordinates are used for this plotter and how they are arranged in supplied DataSpec objects.
    
    Specified by:
    
    getCoordGroup in interface Plotter<SpectrogramPlotter.SpectroStyle>
    
    Returns:
    
    coordinate group
  - getStyleKeys
```
public ConfigKey<?>[] getStyleKeys()
```
    Description copied from interface: Plotter
    
    Returns the configuration keys used to configure style for this plotter. The keys in the return value are used in the map supplied to the Plotter.createStyle(uk.ac.starlink.ttools.plot2.config.ConfigMap) method.
    
    Specified by:
    
    getStyleKeys in interface Plotter<SpectrogramPlotter.SpectroStyle>
    
    Returns:
    
    keys used when creating a style for this plotter.
  - createStyle
```
public SpectrogramPlotter.SpectroStyle createStyle(ConfigMap config)
```
    Description copied from interface: Plotter
    
    Creates a style that can be used when creating a plot layer. The keys that are significant in the supplied config map are those returned by Plotter.getStyleKeys(). The return value can be used as input to Plotter.createLayer(uk.ac.starlink.ttools.plot2.DataGeom, uk.ac.starlink.ttools.plot2.data.DataSpec, S).
    
    Specified by:
    
    createStyle in interface Plotter<SpectrogramPlotter.SpectroStyle>
    
    Parameters:
    
    config - map of style configuration items
    
    Returns:
    
    plotter-specific plot style
  - getRangeStyleKey
```
public java.lang.Object getRangeStyleKey(SpectrogramPlotter.SpectroStyle style)
```
    Description copied from interface: Plotter
    
    Returns an opaque object characterising the region of the plot surface covered when using a given plotter style. If this object changes between layers produced by this plotter, it provides a hint that it may be necessary to redetermine the axis ranges (using extendCoordinateRanges).
    In many cases, such as scatter-plot-like plotters, the range is determined only by the coordinate data (managed by DataSpec inputs) so a null value may be returned. This method is chiefly required by histogram-like plotters for which the region on the plot surface is not the union of the input positions.
    
    Specified by:
    
    getRangeStyleKey in interface Plotter<SpectrogramPlotter.SpectroStyle>
    
    Parameters:
    
    style - plot style to assess
    
    Returns:
    
    opaque object with equality semantics, or null if axis range is not a function of style
  - hasReports
```
public boolean hasReports()
```
    Description copied from interface: Plotter
    
    Indicates whether the drawings produced by this plotter will return general interest report information to upstream plotting code.
    
    Specified by:
    
    hasReports in interface Plotter<SpectrogramPlotter.SpectroStyle>
    
    Returns:
    
    true if the plot report may return interesting information
    
    See Also:
    
    Drawing.getReport(java.lang.Object)
  - createLayer
```
public PlotLayer createLayer(DataGeom geom,
                             DataSpec dataSpec,
                             SpectrogramPlotter.SpectroStyle style)
```
    The supplied geom is ignored.
    
    Specified by:
    
    createLayer in interface Plotter<SpectrogramPlotter.SpectroStyle>
    
    Parameters:
    
    geom - indicates base position coordinates and their mapping to points in the data space; if non-null, the data geom's DataGeom.hasPosition() method will return true
    
    dataSpec - specifies the data required for the plot
    
    style - data style as obtained from createStyle
    
    Returns:
    
    new plot layer, or null if no drawing will take place

Class SpectrogramPlotter

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

SpectrogramPlotter

Method Detail

getSpectrumCoordIndex

getExtentCoordIndex

getPlotterName

getPlotterIcon

getPlotterDescription

getCoordGroup

getStyleKeys

createStyle

getRangeStyleKey

hasReports

createLayer