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java.lang.Objectuk.ac.starlink.ttools.plot2.layer.AbstractPlotter<LineStyle>
uk.ac.starlink.ttools.plot2.layer.LinearFitPlotter
public class LinearFitPlotter
Fits a set of 2-d points to a linear equation, and plots the line.
Field Summary | |
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static ReportKey<double[]> |
COEFFS_KEY
Report key for coefficients of linear fit (2 element array (c, m)). |
static ReportKey<Double> |
CORRELATION_KEY
Report key for product moment correlation coefficient. |
static ReportKey<String> |
EQUATION_KEY
Report key for text of linear fit equation. |
Constructor Summary | |
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LinearFitPlotter(boolean hasWeights)
Constructor. |
Method Summary | |
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PlotLayer |
createLayer(DataGeom geom,
DataSpec dataSpec,
LineStyle style)
Creates a PlotLayer based on the given geometry, data and style. |
LineStyle |
createStyle(ConfigMap config)
Creates a style that can be used when creating a plot layer. |
String |
getPlotterDescription()
Returns an XML description of this plotter. |
ConfigKey[] |
getStyleKeys()
Returns the configuration keys used to configure style for this plotter. |
Methods inherited from class uk.ac.starlink.ttools.plot2.layer.AbstractPlotter |
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getCoordGroup, getPlotterIcon, getPlotterName, hasReports |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final ReportKey<double[]> COEFFS_KEY
public static final ReportKey<String> EQUATION_KEY
public static final ReportKey<Double> CORRELATION_KEY
Constructor Detail |
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public LinearFitPlotter(boolean hasWeights)
hasWeights
- true if points may be weightedMethod Detail |
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public String getPlotterDescription()
Plotter
Note: really this should appear at the LayerType level.
public ConfigKey[] getStyleKeys()
Plotter
Plotter.createStyle(uk.ac.starlink.ttools.plot2.config.ConfigMap)
method.
public LineStyle createStyle(ConfigMap config)
Plotter
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)
.
config
- map of style configuration items
public PlotLayer createLayer(DataGeom geom, DataSpec dataSpec, LineStyle style)
Plotter
The style
parameter is the result of a call to
Plotter.createStyle(uk.ac.starlink.ttools.plot2.config.ConfigMap)
.
The dataSpec
parameter must contain the coordinates
defined by this plotter's CoordGroup.
The pointDataGeom
parameter is only used if
getCoordGroup()
.
getPositionCount
returns a non-zero value,
otherwise the plot does not have point positions.
It is legal to supply null for any of the parameters; if insufficient data is supplied to generate a plot, then the method should return null.
Creating a layer should be cheap; layers may be created and not used.
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 truedataSpec
- specifies the data required for the plotstyle
- data style as obtained from createStyle
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