Package org.aesh.charts.linechart

Class LineChart

java.lang.Object

org.aesh.charts.linechart.LineChart

Direct Known Subclasses:

TimeSeriesChart

public class LineChart
extends Object

A line chart that plots one or more data series on a 2D grid.

Supports multiple rendering modes (ASCII, Unicode, Braille), multiple series with colors and line styles, and viewport scrolling for data that exceeds the terminal width.

Example:

 LineChart chart = LineChart.builder()
         .width(60).height(15)
         .style(ChartStyle.BRAILLE)
         .xLabel("Time").yLabel("CPU %")
         .build();
 chart.addSeries(cpuData);
 System.out.println(chart.render());
 

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LineChart.Builder

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	LineChart(LineChart.Builder builder)

Method Summary

Modifier and Type	Method	Description
LineChart	addHorizontalLine(HorizontalLine line)	Add a horizontal reference line (threshold, baseline, target).
LineChart	addMarker(Marker marker)	Add a marker to highlight a specific data point.
LineChart	addSeries(DataSeries series)
static LineChart.Builder	builder()
protected void	plotSeries(Canvas canvas, DataSeries series, Axis xAxis, Axis yAxis, int plotLeft, int plotRight, int plotTop, int plotBottom)	Plot a single data series onto the canvas.
String	render()	Render the chart to a multi-line string.
void	scrollLeft(int amount)
void	scrollRight(int amount)
void	scrollToEnd()
void	scrollToStart()
List<DataSeries>	seriesList()
void	setViewportSize(int size)

Methods inherited from class java.lang.Object

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

Constructor Details

LineChart

protected LineChart(LineChart.Builder builder)

Method Details

builder

public static LineChart.Builder builder()

addSeries

public LineChart addSeries(DataSeries series)

seriesList

public List<DataSeries> seriesList()

addMarker

public LineChart addMarker(Marker marker)

Add a marker to highlight a specific data point. Used for change detection alerts, regression markers, etc.

addHorizontalLine

public LineChart addHorizontalLine(HorizontalLine line)

Add a horizontal reference line (threshold, baseline, target).

scrollLeft

public void scrollLeft(int amount)

scrollRight

public void scrollRight(int amount)

scrollToStart

public void scrollToStart()

scrollToEnd

public void scrollToEnd()

setViewportSize

public void setViewportSize(int size)

render

public String render()

Render the chart to a multi-line string.

plotSeries

protected void plotSeries(Canvas canvas,
 DataSeries series,
 Axis xAxis,
 Axis yAxis,
 int plotLeft,
 int plotRight,
 int plotTop,
 int plotBottom)

Plot a single data series onto the canvas.