Package org.aesh.charts.common

Class Marker

java.lang.Object

org.aesh.charts.common.Marker

public class Marker
extends Object

A marker on a chart — an annotated point that highlights a specific data value (e.g., a change detection, regression, anomaly).

Markers are rendered as a highlighted character at the data point position, optionally with a label. They can be used to indicate change detections from systems like Horreum/h5m.

Example:

 chart.addMarker(Marker.at(timestamp, value)
         .label("regression")
         .color(ANSI.RED_TEXT)
         .symbol('!'));
 

Method Summary

Modifier and Type	Method	Description
static Marker	at(double x, double y)	Create a marker at the given data coordinates.
static Marker	atTime(long epochMillis, double value)	Create a marker at a timestamp and value (for time series charts).
String	color()
Marker	color(String color)	Set the ANSI color for the marker symbol and label.
String	label()
Marker	label(String label)	Set the label shown near the marker point.
char	symbol()
Marker	symbol(char symbol)	Set the symbol character rendered at the marker position.
double	x()
double	y()

Methods inherited from class java.lang.Object

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

Method Details

at

public static Marker at(double x,
 double y)

Create a marker at the given data coordinates.

atTime

public static Marker atTime(long epochMillis,
 double value)

Create a marker at a timestamp and value (for time series charts).

label

public Marker label(String label)

Set the label shown near the marker point.

color

public Marker color(String color)

Set the ANSI color for the marker symbol and label.

symbol

public Marker symbol(char symbol)

Set the symbol character rendered at the marker position.

Common choices:

• '!' — alert/regression
• '●' — filled circle (default)
• '▲' — triangle up
• '▼' — triangle down
• '★' — star
• '⚠' — warning sign
• 'X' — ASCII fallback

x

public double x()

y

public double y()

label

public String label()

color

public String color()

symbol

public char symbol()