public class ScatterChart

  1. Object
  2. AbstractChart
  3. XYChart
  4. ScatterChart

Renders discrete X/Y points without connecting lines.

Configure the marker style through XYSeriesRenderer#setPointStyle and related options on the XYMultipleSeriesRenderer. As with other charts, wrap the instance in a com.codename1.charts.ChartComponent to place it on a form.

Fields

public static final String TYPE = "Scatter"The constant to identify this chart type.

Constructors

public ScatterChart(XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer)Builds a new scatter chart instance.

Methods

protected void setDatasetRenderer(XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer)
public void drawSeries(Canvas canvas, Paint paint, List<Float> points, XYSeriesRenderer renderer, float yAxisValue, int seriesIndex, int startIndex)The graphical representation of a series.
protected ClickableArea[] clickableAreasForPoints(List<Float> points, List<Double> values, float yAxisValue, int seriesIndex, int startIndex)Returns the clickable areas for all passed points
public int getLegendShapeWidth(int seriesIndex)Returns the legend shape width.
public void drawLegendShape(Canvas canvas, SimpleSeriesRenderer renderer, float x, float y, int seriesIndex, Paint paint)The graphical representation of the legend shape.
public String getChartType()Returns the chart type identifier.

Inherited fields

From XYChart

mDataset, mRenderer

Inherited methods

From XYChart

draw, getXLabels, getYLabels, getScreenR, setScreenR, drawSeries, drawPoints, drawChartValuesText, drawText, drawXLabels, drawYLabels, drawXTextLabels, getRenderer, getDataset, getCalcRange, setCalcRange, toRealPoint, toScreenPoint, toRealPoint, toScreenPoint, getSeriesAndPointForScreenCoordinate, isRenderNullValues, isRenderPoints, getDefaultMinimum, getPointsChart

From AbstractChart

calculateDrawPoints, drawBackground, drawLegend, drawString, getExceed, isVertical, getLabel, drawPath, drawPath, getLegendSize, drawLabel, isNullValue

From Object

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

Field details

TYPE

public static final String TYPE = "Scatter"
The constant to identify this chart type.

Constructor details

ScatterChart

public ScatterChart(XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer)
Builds a new scatter chart instance.

Parameters

dataset XYMultipleSeriesDataset
the multiple series dataset
renderer XYMultipleSeriesRenderer
the multiple series renderer

Method details

setDatasetRenderer

protected void setDatasetRenderer(XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer)

drawSeries

public void drawSeries(Canvas canvas, Paint paint, List<Float> points, XYSeriesRenderer renderer, float yAxisValue, int seriesIndex, int startIndex)
The graphical representation of a series.

Parameters

canvas Canvas
the canvas to paint to
paint Paint
the paint to be used for drawing
points List<Float>
the array of points to be used for drawing the series
renderer XYSeriesRenderer
the series renderer
yAxisValue float
the minimum value of the y axis
seriesIndex int
the index of the series currently being drawn
startIndex int
the start index of the rendering points

clickableAreasForPoints

protected ClickableArea[] clickableAreasForPoints(List<Float> points, List<Double> values, float yAxisValue, int seriesIndex, int startIndex)
Returns the clickable areas for all passed points

Parameters

points List<Float>
the array of points
values List<Double>
the array of values of each point
yAxisValue float
the minimum value of the y axis
seriesIndex int
the index of the series to which the points belong
startIndex int
the start index of the rendering points

Returns

an array of rectangles with the clickable area

getLegendShapeWidth

public int getLegendShapeWidth(int seriesIndex)
Returns the legend shape width.

Parameters

seriesIndex int
the series index

Returns

the legend shape width

drawLegendShape

public void drawLegendShape(Canvas canvas, SimpleSeriesRenderer renderer, float x, float y, int seriesIndex, Paint paint)
The graphical representation of the legend shape.

Parameters

canvas Canvas
the canvas to paint to
renderer SimpleSeriesRenderer
the series renderer
x float
the x value of the point the shape should be drawn at
y float
the y value of the point the shape should be drawn at
seriesIndex int
the series index
paint Paint
the paint to be used for drawing

getChartType

public String getChartType()
Returns the chart type identifier.

Returns

the chart type