Graph Drawing Framework

I'm looking for a framework to use to draw Graphs (nodes and connecting links). Does anyone out there know of anything already implemented like this... Something like ARGO UML???
TIA

Hi!
Take a look at http://www.yworks.de ! They have a powerful graph drawing framework and API called yFiles.

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I want to make a Graph Drawing Servlet

I need to make line graphs, having days on the X axis and certain values on the Y axis. I need to show this on a JSP. I was thinking of making a servlet returning the image, but I'm not finding any Java solution for the graph drawing part. I would really like to avoid having to manually draw the graph. Does anyone know a simple way to do this?

The Google Chart API is pretty simple and powerful.
http://code.google.com/apis/chart/

Filter out marked data from XY graph (Draw graph)

Hi there,
I've a question about "filtering" data from an XY Graph, please see the attachement.
The graph shows some sample data (white plot) and a red "ballon" plot (you can press left mouse button
and move over the graph to draw the red plot).
My need is to get all samples inside the red ballon, but presently I got stuck with it!
Any Ideas?!
(The attached VI is saved by LabVIEW2009 version)
Solved!
Go to Solution.
Attachments:
Paint_XY_Graph.vi ‏24 KB

To determine id a point is inside of the red baloon it must satisfy the condition where the X,Y is less than any X,Y point and greater than any other X,Y point. To filter them out remove outliers from the array or set their values to nan to not plot them
Paul Falkenstein
Coleman Technologies Inc.
CLA, CPI, AIA-Vision
Labview 4.0- 2013, RT, Vision, FPGA

Line Graph Drawing

Hi i have developed a class for the information manipulation of a Line graph
I would Like some help in actually drawing the graph so i can pass values
manipulated here to the drawing of the graph any help is greatly appreciated thank you
package ICUv2;
import java.awt.Point;
import java.util.Random;
public class ecgSensor extends Paitent {
    private int x;
    private int y;
    private int xpos;
    private int ypos;
    private int min;
    private int max;
    private Point rate;
     public ecgSensor(int x, int y, int min, int max, int xpos, int ypos ){
    setX(x);
    setY(y);
    setMin(min);
    setMax(max);
    setRate(getXpos() , getYpos());
    public ecgSensor(int x, int y, int min, int max ){
    this(x,y,min,max,0,0);
    setX(x);
    setY(y);
    setMin(min);
    setMax(max);
    public ecgSensor(){
    this(5, 5, 50, 100);
    @Override
    public String toString(){
    return String.format("%s :%s", getX(), getY());
    public static void main (String[] args){
    ecgSensor a = new ecgSensor() ;
    System.out.print(a.toString());
    //System.out.print(a.getX());
    //System.out.print(" ");
    //System.out.print(a.getY());
    public Point getRate(){
    return rate;
    public void setRate(int x, int y){
    this.rate = new Point (x, y);
    public int getX(){
    return x;
    public int getY(){
    return y;
    public void setX(int x){
    this.x = x;
    public void setY(int y){
    this.y = y;
    public int getMin(){
    return min ;
    public int getMax(){
    return max;
    public void setMin(int min){
    this.min = min;
    public void setMax(int max){
    this.max = max;
    public int getXpos(){
    return xpos;
    public int getYpos(){
    return ypos;
    public void setXpos(int xpos){
    this.xpos = xpos;
    public void setYpos(int ypos){
    this.ypos = ypos;
    public int incYpos(){
    return this.ypos;
    public void setincYpos(int inc){
    setYpos(getYpos()-inc);
    public int decYpos(){
    return this.ypos;
    public void setdecYpos(int dec){
    setYpos(getYpos()+ dec);
    public class ecgReadings implements Runnable {
    Random ecgr = new Random();
    int Change = ecgr.nextInt(20);
    public void run(){
        this.toString();
        while (true) {
              if (x%2==0){
                setXpos(getXpos()+ 10);
                setdecYpos(Change);
                }else{
                setXpos(getXpos()+ 10);
                setincYpos(Change);
       try{
         Thread.sleep(1000);
         }catch(InterruptedException e){}
       }// end of while
    }// end of run method
}// end of ReviseBloodrate class
}

xiaolixx wrote:
Hi i have developed a class for the information manipulation of a Line graph
I would Like some help in actually drawing the graph so i can pass values
manipulated here to the drawing of the graph ..Right. Did you have a question, or did you think your plaintiff cry for help would get someone to do it all for you?
..any help is greatly appreciated thank you
package ICUv2;
By convention, package names are alllowercase (It's funny you should rediscover your shift key, just for some package name where it is inappropriate!). Class names should be EachWordUpperCase, while attributes and methods should be firstWordLowerCaseAllTheRestUpper.
By using the common conventions for code, you help to communicate the problem to others who are used to seeing that nomenclature.
And as I said before.. "For better help sooner, post an SSCCE".

Graph drawing in JSP

How can i get my jsp to draw a graph automatically with results from a database. The main problem is tryiing to get the JSP to display a graph. The rest I could probably figure out. Can anyone help me please??????????????????????

or use JFreeChart. You can generate the chart image in a servlet and use an image HTML tag to show it. Search the forums, I have posted some example of that somewhere.

Graph drawing in JS

is it possible to to draw a graph in a web page automatically with results from a database.(using JSP)

I suggest that you use servlet to draw the graphics.
In your jsp, you can call the servlet like this.
<img src="myServlet" width="100" height="100">

Graph drawing using JSP

is it possible to to draw a graph in a web page automatically with results from a database.(using JSP)

Did it took 8 months to solve it?
Anyway, glad you got it fixed.

Graph Drawing Algorithms II

Hi guys,
I'm researching graph layout algorithms. Most of the packages available don't suit because they require the user to specify a number of nodes and edges between them and then it draws them very prettily.
Because I want an extension of a Circle class to be drawn and I need it to be drawn on a customised JPanel called Canvas most of these programs aren't suitable. I have the program laying them out itself but atm they look crude and horrible.
What I'd like is a plug in java program that can assign coordinates and a basic structure to the graph that I entered.
Thank you very much for reading this far,

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;
public class CircleTest extends JPanel
    CircleModel[] circles;
    CircleModel selectedCircle;
    final int
        PAD = 20,
        SIZE = 10;
    public CircleTest()
        Point[] cps = { new Point(25,25), new Point(80,60), new Point(35,80) };
        circles = new CircleModel[cps.length];
        circles[0] = new CircleModel(cps[0], 15, Color.green.darker(), Color.cyan);
        circles[1] = new CircleModel(cps[1], 20, Color.red,            Color.orange);
        circles[2] = new CircleModel(cps[2], 15, Color.blue,           Color.magenta);
    protected void paintComponent(Graphics g)
         super.paintComponent(g);
         Graphics2D g2 = (Graphics2D)g;
         g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                             RenderingHints.VALUE_ANTIALIAS_ON);
         double w = getWidth();
         double h = getHeight();
         double xInc = SIZE * (w - 2*PAD) / CircleModel.MAX_X;
         double yInc = SIZE * (h - 2*PAD) / CircleModel.MAX_Y;
         g2.setPaint(new Color(220,200,240));
         // vertical model grid lines
         double x = PAD;
         for(int j = 0; j <= SIZE; j++, x += xInc)
             g2.draw(new Line2D.Double(x, PAD, x, h-PAD));
         // horizontal model grid lines
         double y = PAD;
         for(int j = 0; j <= SIZE; j++, y += yInc)
             g2.draw(new Line2D.Double(PAD, y, w-PAD, y));
         double vw = w - 2*PAD;
         double vh = h - 2*PAD;
         for(int j = 0; j < circles.length; j++)
             CircleModel circle = circles[j];
             Color color = circle.color;
             if(circle == selectedCircle)
                 color = circle.selectColor;
             g2.setPaint(color);
             Point2D p = circle.getLocation(vw, vh);
             double[] s = circle.getSize(vw, vh);
             g2.draw(new Ellipse2D.Double(PAD+p.getX(), PAD+p.getY(), s[0], s[1]));
             g2.setPaint(Color.red);
             p = circle.getCenter(vw, vh);
             g2.fill(new Ellipse2D.Double(PAD+p.getX()-2, PAD+p.getY()-2, 4, 4));
    public void setSelection(CircleModel selected)
        selectedCircle = selected;
        repaint();
    public Rectangle2D getViewRect()
        Rectangle2D.Double r = new Rectangle2D.Double();
        r.x = PAD;
        r.y = PAD;
        r.width = getWidth() - 2*PAD;
        r.height = getHeight() - 2*PAD;
        return r;
    public static void main(String[] args)
        CircleTest test = new CircleTest();
        SweepTester sweeper = new SweepTester(test);
        test.addMouseMotionListener(sweeper);
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(test);
        f.setSize(400,400);
        f.setLocation(200,200);
        f.setVisible(true);
class SweepTester extends MouseMotionAdapter
    CircleTest circleTest;
    CircleModel lastSelection;
    public SweepTester(CircleTest ct)
        circleTest = ct;
    public void mouseMoved(MouseEvent e)
        Point p = e.getPoint();
        boolean haveSelection = false;
        CircleModel[] circles = circleTest.circles;
        Rectangle2D r2 = circleTest.getViewRect();
        for(int j = 0; j < circles.length; j++)
            if(circles[j].contains(p, r2))
                circleTest.setSelection(circles[j]);
                lastSelection = circles[j];
                haveSelection = true;
                break;
        if(!haveSelection && lastSelection != null)
            lastSelection = null;
            circleTest.setSelection(null);
class CircleModel
    Point2D center;
    double radius;
    Color color;
    Color selectColor;
    final static int
        MAX_X = 100,
        MAX_Y = 100;
    public CircleModel(Point p, int r, Color c, Color sc)
        center = p;
        radius = r;
        color = c;
        selectColor = sc;
    protected Point2D getLocation(double w, double h)
        Point2D.Double modelLoc = new Point2D.Double();
        modelLoc.x = center.getX() - radius;
        modelLoc.y = center.getY() - radius;
        Point2D viewLoc = modelToView(modelLoc, w, h);
        return viewLoc;
    protected Point2D getCenter(double w, double h)
        return modelToView(center, w, h);
    protected double[] getSize(double w, double h)
        Point2D cp = getCenter(w,h);
        Point2D loc = getLocation(w,h);
        double width = 2 * (cp.getX() - loc.getX());
        double height = 2 * (cp.getY() - loc.getY());
        return new double[] { width, height };
    private Point2D modelToView(Point2D modelP, double viewWidth, double viewHeight)
        Point2D.Double viewP = new Point2D.Double();
        viewP.x = viewWidth * modelP.getX() / MAX_X;
        viewP.y = viewHeight * modelP.getY() / MAX_Y;
        return viewP;
    public boolean contains(Point p, Rectangle2D r)
        Point2D loc = getLocation(r.getWidth(), r.getHeight());
        double[] size = getSize(r.getWidth(), r.getHeight());
        Ellipse2D e = new Ellipse2D.Double(r.getX() + loc.getX(),
                                           r.getY() + loc.getY(), size[0], size[1]);
        return e.contains(p);
}

Anyone use a Graph Drawing Kit

I'm looking for some extension libraries that could help me draw graphs of data. I'm using java version se 1.4.2 and netBeans in conjunction with apaches HSSF extension to write excel files. I know that they have some cool graph and picture functionality included, however, I would like to render graphs in my GUI as well.
Any ideas?
thanks

Yeah I guess charts would be helpful too .. so I
guess I'll check out jfree.org ... also is JGraph a
normal swing class?Both JFreeChart and JGraph are open source third party libraries and are not part of the JRE/JDK distribution.

XY-Graph, draw Measured value with Timepstamp (e.g. - 2,34; 12:31:12)

Hi there,
I have a proble to draw a XY plot. How is it possible to set the X-axis with the recorder timestamp ?
pls see the attachmend!
Thank you!
Attachments:
Test.vi ‏22 KB

You can translate a string to a timestamp by converting each element to a number and building a time cluster. The attached VI shows an example of the technique, but it's not finished and probably has some bugs. If your format is set, you can write a small piece of code to do this.
Try to take over the world!
Attachments:
time21.vi ‏124 KB

Graph drawing - drawing an arc to and from the same node, how??

Hey everyone
This is probably going to have an easy solution but I really cant figure it out!! The problem is drawing a loop in a state machine, ie a path to and from the same node therefore a loop!
Is there a way to actually do this?
Thanks in advance!

Graphics.drawArc(left, top, width, height, start, span) where start is the start angle in degrees, and span is the number of degrees of arc. Assuming you're like me, you're probably putting in the end angle rather than the span.
Here's one I made earlier- http://www.metamodelling.net/files/ReflexiveArc.java - steps through nine common placements for a circular reflexive arc.
Pete

PROBLEM WITH GRAPH DRAWING PACKAGE

Hi all,
I have been trying to compile and run some code using "JOPenChart" a free charting tool, but I am having many problems.
Here is the small class:
import de.progra.charting.*;
import de.progra.charting.model.*;
import de.progra.charting.render.*;
import java.awt.*;
import java.io.*;
public class test{
public static void makeFirstChart() {
     int[][] model = {{0, 100, 200000}};     // Create data array
     double[] columns = {0.0, 1.0, 2000.0}; // Create x-axis values
     String[] rows = {"DataSet 1"};          // Create data set title
     String title = "A First Test";          // Create diagram title
     int width = 640;                        // Image size
     int height = 480;
     // Create data model
     DefaultChartDataModel data = new DefaultChartDataModel(model, columns, rows);
     // Create chart with default coordinate system
     DefaultChart c = new DefaultChart(data, title, DefaultChart.LINEAR_X_LINEAR_Y);
     // Add a line chart renderer
     c.addChartRenderer(new LineChartRenderer(c.getCoordSystem(), data,
     RowColorModel.getInstance(data)), 1);
     // Set the chart size
     c.setBounds(new Rectangle(0, 0, width, height));
     // Export the chart as a PNG image
     try {
          ChartEncoder.createEncodedImage(new FileOutputStream(System.getProperty("user.home")+"/first.png"), c, "png");
          } catch(Exception e)
               e.printStackTrace();
}//method
public static void main (String [] args)
     makeFirstChart();
}//classI have downloaded the JAR files from the web site. They are called:
"jep.jar"
"servlet.jar"
"charting-0.94.jar"
but they do not seem to make any difference and I still get compile errors:
C:\Proj\code\chart>javac test.java
test.java:1: package de.progra.charting does not exist
import de.progra.charting.*;
test.java:2: package de.progra.charting.model does not exist
import de.progra.charting.model.*;
test.java:3: package de.progra.charting.render does not exist
import de.progra.charting.render.*;I cannot work out how to let the cimpiler know that I want to use the said JAR files, or what else to do to solve the above situation...
Please help as this is CRITICAL to my University project!!!!
Any help would be much apprecicated!
Many thanks.

Does your classpath include the jars you list?
DB

Server Admin not drawing graphs

I have a fresh install of Leopard that will not display the graphs in Server Admin on the server. I can see the graphs if viewing from my laptop or other machine, but not from the server itself. It gets a few errors like ...
... [0x0-0x1b01b].com.apple.ServerAdmin[1734]: * ERROR: -[GRAxes computeLayout]:1124 - plotRect height = 0.000000 <= 0.0 *
... [0x0-0x1b01b].com.apple.ServerAdmin[1734]: * ERROR: -[GRChartView computeLayout]:1194 - Layout for overlay axes (0x6826d30) failed. *
The hardware is a Xserve, 2 x 2.0GHz PPC G5 with 2.0 GB RAM.
Any help is appreciated as this is an annoying feature.

Hi
I see the same "error" messages in every leopard server install I've done - and I've done a fair few - regardless of what hardware was used. Graphs draw fine for me.
Tony

Midlet draw graph

Hi all,
for graph drawing i am using below code
this is working fine if i use limited no of records lik 10 or 20 but if i have 1000 records it not works due
to double or float data type.drawLine function only support int. if i cast array to int i will not get actual graph
and even if i have 1000 records thand graph distance is may be 0.2 or 0.3 with mobile screen.
Is there any solution which i can pass double or float data type to drawLine or if you know suggest some good example please send the example.
private double store[] = {10.25,15.25,10.35,20.15,15.25,25.15,15.25,10.15,20.15,25.15};
private void drawGraph(Graphics g)
          g.setColor(0x000000);
                int gap=(width-(leftGap+rightGap))/store.length;
          int xp=leftGap;    //left gap=25
          for(int i=0;i<store.size();i++)
                    g.drawLine(xp, actValue(store), xp+gap, actValue([i]));
xp+=1;
     }Thanks and regards.

{color:red}{size:20px}CROSS POSTED{size}{color}
[http://forums.sun.com/thread.jspa?threadID=5317122]
Cross posting is rude.
db

Java compatible tool for drawing graphs

can some one suggest me a tool that can be used to draw complex graph like structures...these graphs depict sensors in a wireless sensor network...
can jsim be used to draw these graphs?

can some one suggest me a tool that can be used to
draw complex graph like structures...these graphs
depict sensors in a wireless sensor network...http://openjgraph.sourceforge.net/
http://www.google.com/search?hl=en&q=graph+draw+java&btnG=Google+Search
can jsim be used to draw these graphs?I don't know. You can ask the people that created jsim.

Graph Drawing Framework

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