JMathPlot is a free, lightweight, open-source Java library used to create interactive 2D and 3D mathematical and statistical charts. Originally developed by Yann Richet, it is widely valued for providing simple graphing functionality to Java Swing applications without requiring complex external frameworks or heavy OpenGL hardware acceleration. Core Features
Interactive Canvas: Users can naturally pan, zoom, and dynamically rotate 3D graphs at runtime using standard mouse movements.
No OpenGL Dependencies: Because it renders using pure Java 2D graphics, it works seamlessly across different operating systems (Windows, Mac, Linux) without complex graphics driver setup.
Swing Integration: The core component (Plot2DPanel or Plot3DPanel) directly extends the standard JPanel class, making it easy to embed into any GUI layout.
Automated Scaling: The library handles bounding box calculations, grid lines, and axis label positions automatically based on raw data inputs. Supported Plot Types
JMathPlot is capable of generating a variety of multi-dimensional plots including:
2D and 3D Line/Scatter Plots: Connect data points with line segments or mark them individually.
Histograms: Compute and display frequency distributions using raw statistical data arrays.
Boxplots and Quantiles: Visualize data dispersion, medians, and statistical outliers.
Staircase and 3D Grid Plots: Best suited for step functions or digital signal visualizations. Basic Code Example
The following example shows how to configure a simple 2D line plot using the library’s basic setup:
import javax.swing.; import org.math.plot.; // Import JMathPlot classes public class JMathPlotExample { public static void main(String[] args) { // Define data arrays double[] x = { 1.0, 2.0, 3.0, 4.0, 5.0 }; double[] y = { 10.0, 25.0, 15.0, 30.0, 22.0 }; // Create the PlotPanel container Plot2DPanel plot = new Plot2DPanel(); // Add the plot data and labels plot.addLinePlot(“Performance Metrics”, x, y); plot.setAxisLabel(0, “X Axis Title”); plot.setAxisLabel(1, “Y Axis Title”); // Embed directly into a standard JFrame JFrame frame = new JFrame(“My JMathPlot Window”); frame.setSize(600, 400); frame.setContentPane(plot); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } } Use code with caution. Installation via Maven
jmathplot/src/main/java/org/math/plot/Plot2DPanel.java at master
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