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create a candlestick chart
Posted: Thu May 01, 2008 6:29 am
by gladstone
I hava tried hard to create a candlestick chart. I used the source code from jfreechart, and have some unknown problems about creating the dataset.
can anyone paste a full source code of a simple candlestick chart to me as a reference? it would be very helpful for me to start with.
Posted: Sat May 10, 2008 7:52 am
by RoyW
Code: Select all
import org.jfree.chart.*;
import org.jfree.chart.axis.*;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.CandlestickRenderer;
import org.jfree.data.xy.*;
import javax.swing.*;
import java.awt.*;
import java.io.*;
import java.net.URL;
import java.text.*;
import java.util.*;
import java.util.List;
public class CandlestickDemo extends JFrame {
public CandlestickDemo(String stockSymbol) {
super("CandlestickDemo");
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
DateAxis domainAxis = new DateAxis("Date");
NumberAxis rangeAxis = new NumberAxis("Price");
CandlestickRenderer renderer = new CandlestickRenderer();
XYDataset dataset = getDataSet(stockSymbol);
XYPlot mainPlot = new XYPlot(dataset, domainAxis, rangeAxis, renderer);
//Do some setting up, see the API Doc
renderer.setSeriesPaint(0, Color.BLACK);
renderer.setDrawVolume(false);
rangeAxis.setAutoRangeIncludesZero(false);
domainAxis.setTimeline( SegmentedTimeline.newMondayThroughFridayTimeline() );
//Now create the chart and chart panel
JFreeChart chart = new JFreeChart(stockSymbol, null, mainPlot, false);
ChartPanel chartPanel = new ChartPanel(chart);
chartPanel.setPreferredSize(new Dimension(600, 300));
this.add(chartPanel);
this.pack();
}
protected AbstractXYDataset getDataSet(String stockSymbol) {
//This is the dataset we are going to create
DefaultOHLCDataset result = null;
//This is the data needed for the dataset
OHLCDataItem[] data;
//This is where we go get the data, replace with your own data source
data = getData(stockSymbol);
//Create a dataset, an Open, High, Low, Close dataset
result = new DefaultOHLCDataset(stockSymbol, data);
return result;
}
//This method uses yahoo finance to get the OHLC data
protected OHLCDataItem[] getData(String stockSymbol) {
List<OHLCDataItem> dataItems = new ArrayList<OHLCDataItem>();
try {
String strUrl= "http://ichart.finance.yahoo.com/table.csv?s="+stockSymbol+"&a=0&b=1&c=2008&d=3&e=30&f=2008&ignore=.csv";
URL url = new URL(strUrl);
BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
DateFormat df = new SimpleDateFormat("y-M-d");
String inputLine;
in.readLine();
while ((inputLine = in.readLine()) != null) {
StringTokenizer st = new StringTokenizer(inputLine, ",");
Date date = df.parse( st.nextToken() );
double open = Double.parseDouble( st.nextToken() );
double high = Double.parseDouble( st.nextToken() );
double low = Double.parseDouble( st.nextToken() );
double close = Double.parseDouble( st.nextToken() );
double volume = Double.parseDouble( st.nextToken() );
double adjClose = Double.parseDouble( st.nextToken() );
OHLCDataItem item = new OHLCDataItem(date, open, high, low, close, volume);
dataItems.add(item);
}
in.close();
}
catch (Exception e) {
e.printStackTrace();
}
//Data from Yahoo is from newest to oldest. Reverse so it is oldest to newest
Collections.reverse(dataItems);
//Convert the list into an array
OHLCDataItem[] data = dataItems.toArray(new OHLCDataItem[dataItems.size()]);
return data;
}
public static void main(String[] args) {
new CandlestickDemo("MSFT").setVisible(true);
}
}
combine charts
Posted: Wed Jan 14, 2009 5:06 pm
by sawo01
Is it possible to put Moving Average to this chart?
I can display them in separate window, but I would like to see them on the same diagram, but I don't know, how to do it.
Could anybody help me, please?
Posted: Thu Jan 15, 2009 4:00 pm
by RoyW
Replace this line
Code: Select all
XYPlot mainPlot = new XYPlot(dataset, domainAxis, rangeAxis, renderer);
with this code
Code: Select all
XYPlot mainPlot = new XYPlot(dataset, domainAxis, rangeAxis, renderer);
final long ONE_DAY = 24 * 60 * 60 * 1000;
XYLineAndShapeRenderer maRenderer = new XYLineAndShapeRenderer(true, false);
XYDataset maSataset = MovingAverage.createMovingAverage(dataset, "MA", 30 * ONE_DAY, 0);
mainPlot.setRenderer(1, maRenderer);
mainPlot.setDataset (1, maSataset);
updating the dataset
Posted: Mon Feb 02, 2009 2:15 pm
by sawo01
Thanks, this is amazing. It works fine.
Is it hard to modify the app and make the dataset refreshable?
I mean, I would like to display more candlesticks, but not in the same time.
I have a big DB with more than 500.000 candlesticks. Can I display in one time just e.g. 200 OHCL bars, put a Theard.sleep(100), and refresh the dataset?
Re: create a candlestick chart
Posted: Tue Aug 18, 2009 8:59 am
by ashokgawas
I want crosshairs moving with the mouse cursor on the candlestick chart.. can anyone send me an example??
Re: [1.0.13]it doesn't work!!!
Posted: Fri Aug 28, 2009 9:36 am
by fans_chart
but works on 1.0.9
RoyW wrote:Code: Select all
import org.jfree.chart.*;
import org.jfree.chart.axis.*;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.CandlestickRenderer;
import org.jfree.data.xy.*;
import javax.swing.*;
import java.awt.*;
import java.io.*;
import java.net.URL;
import java.text.*;
import java.util.*;
import java.util.List;
public class CandlestickDemo extends JFrame {
public CandlestickDemo(String stockSymbol) {
super("CandlestickDemo");
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
DateAxis domainAxis = new DateAxis("Date");
NumberAxis rangeAxis = new NumberAxis("Price");
CandlestickRenderer renderer = new CandlestickRenderer();
XYDataset dataset = getDataSet(stockSymbol);
XYPlot mainPlot = new XYPlot(dataset, domainAxis, rangeAxis, renderer);
//Do some setting up, see the API Doc
renderer.setSeriesPaint(0, Color.BLACK);
renderer.setDrawVolume(false);
rangeAxis.setAutoRangeIncludesZero(false);
domainAxis.setTimeline( SegmentedTimeline.newMondayThroughFridayTimeline() );
//Now create the chart and chart panel
JFreeChart chart = new JFreeChart(stockSymbol, null, mainPlot, false);
ChartPanel chartPanel = new ChartPanel(chart);
chartPanel.setPreferredSize(new Dimension(600, 300));
this.add(chartPanel);
this.pack();
}
protected AbstractXYDataset getDataSet(String stockSymbol) {
//This is the dataset we are going to create
DefaultOHLCDataset result = null;
//This is the data needed for the dataset
OHLCDataItem[] data;
//This is where we go get the data, replace with your own data source
data = getData(stockSymbol);
//Create a dataset, an Open, High, Low, Close dataset
result = new DefaultOHLCDataset(stockSymbol, data);
return result;
}
//This method uses yahoo finance to get the OHLC data
protected OHLCDataItem[] getData(String stockSymbol) {
List<OHLCDataItem> dataItems = new ArrayList<OHLCDataItem>();
try {
String strUrl= "http://ichart.finance.yahoo.com/table.csv?s="+stockSymbol+"&a=0&b=1&c=2008&d=3&e=30&f=2008&ignore=.csv";
URL url = new URL(strUrl);
BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
DateFormat df = new SimpleDateFormat("y-M-d");
String inputLine;
in.readLine();
while ((inputLine = in.readLine()) != null) {
StringTokenizer st = new StringTokenizer(inputLine, ",");
Date date = df.parse( st.nextToken() );
double open = Double.parseDouble( st.nextToken() );
double high = Double.parseDouble( st.nextToken() );
double low = Double.parseDouble( st.nextToken() );
double close = Double.parseDouble( st.nextToken() );
double volume = Double.parseDouble( st.nextToken() );
double adjClose = Double.parseDouble( st.nextToken() );
OHLCDataItem item = new OHLCDataItem(date, open, high, low, close, volume);
dataItems.add(item);
}
in.close();
}
catch (Exception e) {
e.printStackTrace();
}
//Data from Yahoo is from newest to oldest. Reverse so it is oldest to newest
Collections.reverse(dataItems);
//Convert the list into an array
OHLCDataItem[] data = dataItems.toArray(new OHLCDataItem[dataItems.size()]);
return data;
}
public static void main(String[] args) {
new CandlestickDemo("MSFT").setVisible(true);
}
}
Re: create a candlestick chart
Posted: Sat Aug 24, 2013 11:50 am
by Jean-Paul
BUG IN THE CODE: IMPORTANT FOR EVERYONE USING THE ABOVE CODE
I made an account just to warn everyone trying to use the code above (it took me a lot of hours to find this bug):
You have to use JFreeChart library v1.0.15 or higher or otherwise the JFrame will crash for certain random stock quotes.
If you want to know more, please read the following question I posted:
http://stackoverflow.com/questions/1841 ... nce-quotes
I hope I can prevent future trouble for anyone. Good luck and enjoy the beautiful code (kudos to RoyW).
Re: create a candlestick chart
Posted: Thu Aug 29, 2013 8:58 pm
by david.gilbert
It seems that this bug fix explains the difference in behaviour between 1.0.14 and 1.0.15:
http://sourceforge.net/p/jfreechart/code/2465/
Re: create a candlestick chart
Posted: Tue Nov 05, 2013 8:21 am
by marioscelba
Good tutorials,I think this is good way for learning.