Hello my friends
I have a txt file with the follow layout
error1 255
error2 34
error5 111
error3 23
and what i'm trying to achieve is, from this text file plot a trend chart with the errors and respective quantity!
this is the code that i'm using....
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.*;
import java.util.*;
import java.lang.NumberFormatException;
import java.text.NumberFormat;
import java.text.MessageFormat;
import java.awt.Font;
import javax.swing.JFrame;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PiePlot;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
import org.jfree.data.*;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.data.DomainOrder;
import org.jfree.data.general.SeriesDataset;
import org.jfree.data.category.DefaultCategoryDataset;
public class graph extends JFrame{
/**
*
*/
private static final long serialVersionUID = 0L;
public graph(String title) throws Exception{
super(title);
XYDataset dataset = createDataset();
JFreeChart chart = createChart(dataset);
ChartPanel chartPanel = new ChartPanel(chart);
chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
setContentPane(chartPanel);
chartPanel.setMouseZoomable(true, false);
}
// Well, here I read a file from a table in txt each line with 4 columns of numbers), save it in a string and then on a string
// Array of 4 elements. Then convert each element of the string to double (not know if I'm being very stupid, I am more beginner in java ...)
// What I'm trying to do is get two of those column (now in double) and put points on the method series.add below
// I think I have to do a loop of some way, then do what you suggested q ... But the loop that I did overwrite the variables
// My attempt was a normal access to the txt file
/* public extrator extract(String) throws Exception {
File file = new File("F:\\Ekralog.txt");
FileInputStream in = new FileInputStream(file);
InputStreamReader convert = new InputStreamReader(in);
BufferedReader bf = new BufferedReader(convert);
String line;
String[] element;
line = bf.readLine();
element = line.split("[\\s]+");
bf.close();
in.close();return
*/
private XYDataset createDataset() throws Exception {
//CONVERT STRING TO DOUBLE
//double element0;
//element0 = Double.parseDouble(element[0]); /* element[0] its one string*/
XYSeries series1 = new XYSeries("TRZ");
series1.add(1.0, 1.0); // some point that i've inserted to test and it is
series1.add(2.0, 4.0);// should i do a loop to test it.. there are more than 100 points
series1.add(3.0, 3.0);
series1.add(4.0, 5.0);
series1.add(5.0, 5.0);
series1.add(6.0, 7.0);
series1.add(7.0, 7.0);
series1.add(8.0, 8.0);
XYSeriesCollection dataset = new XYSeriesCollection();
dataset.addSeries(series1);
return dataset;
}
// ListDouble colunas = new ArrayListDouble();
//public ListDouble getColunas(){
// return colunas;
// }
private JFreeChart createChart(XYDataset dataset) {
// create the chart...
JFreeChart chart = ChartFactory.createXYLineChart(
"Medida", // chart title
"X", // x axis label
"Y", // y axis label
dataset, // data
PlotOrientation.VERTICAL,
true, // include legend
true, // tooltips
false // urls
);
return chart;
}
public static void main(String[] args) throws Exception {
graph teste = new graph("test");
teste.pack();
teste.setVisible(true);
}
}
