Mavzu: Raqamli signallarni filtrlash jarayonlarini tahlil qilish

package com.blogspot.shulgadim.filters;
import java.awt.*;

import javax.swing.*;

import org.jfree.chart.*;

import org.jfree.chart.plot.*;

import org.jfree.data.xy.*;
public class Plot { 

    private String name;

    private double x[] = null;

    private double y[] = null;   

    private String xName;

    private String yName;            

    private JFrame frame;               

    public Plot(String name, double x[], double y[],

                String xName, String yName) {

        this.name = name;

        this.x = x;

        this.y = y;       

        this.xName = xName;

        this.yName = yName;       

        frame = new JFrame("Figure");

        frame.getContentPane().setLayout(new BorderLayout());       

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        XYDataset dataset = createDataset();

        JFreeChart chart = createChart(dataset);

        ChartPanel chartPanel = new ChartPanel(chart);   

        frame.getContentPane().add(chartPanel, BorderLayout.CENTER);

        frame.setSize(400, 400);       

        frame.setVisible(true);       

    }

       

    private XYDataset createDataset() {

        XYSeries series = new XYSeries("");

        for(int i=0; i

            series.add(x[i],y[i]);  

        }       

        XYSeriesCollection dataset = new XYSeriesCollection();

        dataset.addSeries(series);                          

        return dataset;       

    }

       

    private JFreeChart createChart(final XYDataset dataset) {     

        final JFreeChart chart = ChartFactory.createXYLineChart(

            name,                              // chart title

            xName,                      // x axis label

            yName,                      // y axis label

            dataset,                      // data

            PlotOrientation.VERTICAL,

            false,                        // include legend

            false,                        // tooltips

            false                         // urls

        );      

        chart.setBackgroundPaint(Color.LIGHT_GRAY);   

        XYPlot plot = chart.getXYPlot();   

        plot.setBackgroundPaint(Color.WHITE)   

        plot.setDomainGridlinePaint(Color.LIGHT_GRAY);

        plot.setRangeGridlinePaint(Color.LIGHT_GRAY);       

        return chart;       

    }

}

Spectrum klassi signalni Fast Furye qatoriga o'zgartiradi. U ochiq manbali Java JTransforms kutubxonasidan foydalanadi. Spectrum kodi: package com.blogspot.shulgadim.filters;