Class LinePlotter

java.lang.Object
uk.ac.starlink.ttools.plot2.layer.AbstractPlotter<LinePlotter.LinesStyle>
uk.ac.starlink.ttools.plot2.layer.LinePlotter
All Implemented Interfaces:
Plotter<LinePlotter.LinesStyle>
public class LinePlotter extends AbstractPlotter<LinePlotter.LinesStyle>
Plotter that plots a line between data points.
Since:
15 Feb 2013
Author:
Mark Taylor

  • Field Details

    • NOSORT_TXT

      public static final String NOSORT_TXT
      String used to indicate no axis sorting.
      See Also:

    • PLANE_SORTAXIS_KEY

      public static final ConfigKey<AxisOpt> PLANE_SORTAXIS_KEY
      Config key for point sequence pre-sorting in Plane plot.

    • TIME_SORTAXIS_KEY

      public static final ConfigKey<AxisOpt> TIME_SORTAXIS_KEY
      Config key for point sequence pre-sorting in Time plot.

  • Constructor Details

  • Method Details

    • getPlotterDescription

      public String getPlotterDescription()
      Description copied from interface: Plotter
      Returns an XML description of this plotter.

      Note: really this should appear at the LayerType level.

      Returns:
      one or more <p> elements

    • 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(ConfigMap) method.
      Returns:
      keys used when creating a style for this plotter.

    • createStyle

      public LinePlotter.LinesStyle 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(DataGeom, DataSpec, S).
      Parameters:
      config - map of style configuration items
      Returns:
      plotter-specific plot style

    • createLayer

      public PlotLayer createLayer(DataGeom geom, DataSpec dataSpec, LinePlotter.LinesStyle style)
      Description copied from interface: Plotter
      Creates a PlotLayer based on the given geometry, data and style.

      The style parameter is the result of a call to Plotter.createStyle(ConfigMap).

      The dataSpec parameter must contain the coordinates defined by this plotter's CoordGroup.

      The pointDataGeom parameter is only used if the CoordGroup.getBasicPositionCount() or CoordGroup.getExtraPositionCount() method from this plotter's CoordGroup return 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.

      Parameters:
      geom - indicates base position coordinates and their mapping to points in the data space
      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

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