Regarding draw a graph with zoom speciality

Hi to all,
i have a text file which contains the x,y coordinates of the sinewave.Using these coordinates i need to draw the sinewave graph.Then,i need an option in graph to zoom in and zoom out the graph.How should i do this? kindly post any ideas,if any open source is available please provide me link.

i have a text file which contains the x,y coordinates of the sinewave.Whatever for? Can't you just use Math.sin (...)?
Using these coordinates i need to draw the sinewave graph.-- Create a polygon p out of those coordinates.
-- In a paintComponent override, drawPolyline (p.xpoints, p.ypoints, p.npoints)
Then,i need an option in graph to zoom in and zoom out the graph.Apply a scaling factor when creating the polygon. Alternatively, invoke AffineTransformed method createTransformedShape to obtain a scaled polygon.
How should i do this?Your choice, but since you have posted here I thought you intended to do it in Java.
kindly post any ideas,See above.
if any open source is available please provide me link.Isn't this homework? you trying to cheat or what?
db

Similar Messages

How to draw xy graph with multiple y axis input?

Hi,
I have problem in xy graph, the xy graph only can show 1 signal from the y axis input ( As you can see in the attachment )
Is it possible to draw xy graph with 2 Y input? Or maybe there are another type of graph that possible to do this?
Note: the x axis should be from an input too ( not versus time / sample ).
All answer and advice are welcomed.
Best regards,
Alvin Chandra
Solved!
Go to Solution.
Attachments:
Example.vi ‏139 KB

Are you asking for a second Y scale on the graph?
If so, right click on the existing scale, select "Duplicate Scale". This will create a second scale. You can then (if you wish), right click on the new scale a select "Swap Sides" to put it on the other side of the graph.
Are you asking about adding a second plot?
If so then you need to bundle your arrays of X and Y points into clusters and build those into an array:
The X-axis is always from an input on the XY Graph. You just need to change the axis title. Easiest way to do this is to double click on the axis title and type the new name.
Rob

How to draw a graph with fixed Y-axis and varying X-axis....Is it Possible?

i am trying to draw a Line 2d graph with a dataset which contains four values like(x,y)(x1,y1)...(x4,y4)
So when i plot the points i couldn't get the (x,y) values since they are very low when compared to other values...
So,is there any way to scale down the graph to the max value of (x,y)
I am using JFreeChart..

I can draw graph with given dataset.But theScaling
of the graph is high when a single value ishigh.So
is there any solution to scale down the graph to a
particular value.This sounds very much like you are using JFreeChart.
If so, you might be better off asking in the
JFreeChart forum
http://www.jfree.org/phpBB2/viewforum.php?f=3 ...
I read this as not using JFreeChart! If using JFreeChart than one can just set the range of values to be plotted!

How could I draw a graph with a parameter like resistance on the x-axis?

I want to run an analysis that plots a voltage as a function of resistance. The parameter sweeps just make separate lines on the graph corresponding to the different resistances but they are still functions of time. Also If I could get gain as a function of resistance that would be great too(in ac).

For this case, you need to make use of the Export to Excel function (or Mathcad or LabVIEW). Export all the traces and you will have a spreasheet in excel that in the column header has the resistance, and then you will have two columns beneath it, one for time and one for voltage. In this way, you could then select one row, that is... one specific point in time, and graph Voltage as a function of resistance.
Nestor
National Instruments

Need help to draw a graph from the output I get with my program please

Hi all,
I please need help with this program, I need to display the amount of money over the years (which the user has to enter via the textfields supplied)
on a graph, I'm not sure what to do further with my program, but I have created a test with a System.out.println() method just to see if I get the correct output and it looks fine.
My question is, how do I get the input that was entered by the user (the initial deposit amount as well as the number of years) and using these to draw up the graph? (I used a button for the user to click after he/she has entered both the deposit and year values to draw the graph but I don't know how to get this to work?)
Please help me.
The output that I got looked liked this: (just for a test!) - basically this kind of output must be shown on the graph...
The initial deposit made was: 200.0
After year: 1        Amount is: 210.00
After year: 2        Amount is: 220.50
After year: 3        Amount is: 231.53
After year: 4        Amount is: 243.10
After year: 5        Amount is: 255.26
After year: 6        Amount is: 268.02
After year: 7        Amount is: 281.42
After year: 8        Amount is: 295.49
After year: 9        Amount is: 310.27
After year: 10        Amount is: 325.78
After year: 11        Amount is: 342.07
After year: 12        Amount is: 359.17
After year: 13        Amount is: 377.13
After year: 14        Amount is: 395.99
After year: 15        Amount is: 415.79
After year: 16        Amount is: 436.57
After year: 17        Amount is: 458.40And here is my code that Iv'e done so far:
import javax.swing.*;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.lang.Math;
import java.text.DecimalFormat;
public class CompoundInterestProgram extends JFrame implements ActionListener {
    JLabel amountLabel = new JLabel("Please enter the initial deposit amount:");
    JTextField amountText = new JTextField(5);
    JLabel yearsLabel = new JLabel("Please enter the numbers of years:");
    JTextField yearstext = new JTextField(5);
    JButton drawButton = new JButton("Draw Graph");
    public CompoundInterestProgram() {
        super("Compound Interest Program");
        setSize(500, 500);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        amountText.addActionListener(this);
        yearstext.addActionListener(this);
        JPanel panel = new JPanel();
        panel.setBackground(Color.white);
        panel.add(amountLabel);
        amountLabel.setToolTipText("Range of deposit must be 20 - 200!");
        panel.add(amountText);
        panel.add(yearsLabel);
        yearsLabel.setToolTipText("Range of years must be 1 - 25!");
        panel.add(yearstext);
        panel.add(drawButton);
        add(panel);
        setVisible(true);
        public static void main(String[] args) {
             DecimalFormat dec2 = new DecimalFormat( "0.00" );
            CompoundInterestProgram cip1 = new CompoundInterestProgram();
            JFrame f = new JFrame();
            f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            f.getContentPane().add(new GraphPanel());
            f.setSize(500, 500);
            f.setLocation(200,200);
            f.setVisible(true);
            Account a = new Account(200);
            System.out.println("The initial deposit made was: " + a.getBalance() + "\n");
            for (int year = 1; year <= 17; year++) {
                  System.out.println("After year: " + year + "   \t" + "Amount is: " + dec2.format(a.getBalance() + a.calcInterest(year)));
          @Override
          public void actionPerformed(ActionEvent arg0) {
               // TODO Auto-generated method stub
class Account {
    double balance = 0;
    double interest = 0.05;
    public Account() {
         balance = 0;
         interest = 0.05;
    public Account(int deposit) {
         balance = deposit;
         interest = 0.05;
    public double calcInterest(int year) {
           return balance * Math.pow((1 + interest), year) - balance;
    public double getBalance() {
          return balance;
class GraphPanel extends JPanel {
    public GraphPanel() {
    public void paintComponent(Graphics g) {
        Graphics2D g2 = (Graphics2D)g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2.setColor(Color.red);
}Your help would be much appreciated.
Thanks in advance.

watertownjordan wrote:
http://www.jgraph.com/jgraph.html
The above is also good.Sorry but you need to look a bit more closely at URLs that you cite. What the OP wants is a chart (as in X against Y) not a graph (as in links and nodes) . 'jgraph' deals with links and nodes.
The best free charting library that I know of is JFreeChart from www.jfree.org.

Draw graph with vertices and edges

Hi, all,
I'm trying to generate a graph with nodes and edges by using Swing. The problem is I want to generate the graph automatically, which means the program need to know how to put the nodes so the edges among them won't have to cross the nodes. The free software i can find online now can draw nodes and edges, but still need the user to specify the position of the node. Please help me out if you know any such software packages! Thanks a lot in advance!
J.H.

you could try
http://www.utc.edu/~cpmawata/petersen/lesson8.htm
http://www.ff.iij4u.or.jp/~kanada/ccm/coloring/
and
http://student.cosy.sbg.ac.at/~wdietl/study/cs612/Coloring.java
http://student.cosy.sbg.ac.at/~wdietl/study/cs612/pres.html
asjf

I DRAW A GRAPH IN 2D AND I HAVE A PROBLEME WITH THE BUBBLE HELP(ToolTipText

dear friend,
i wrote a java applet that draws a graph in 2D. i want to have coordinates (x,y) on an bubble help while displacing the mouse on the graph.
if someone have an idea, thank you to rather communicate it to me as soon as possible.
thanks.

I don't think you can use a tooltip in this case.
You need to add a MouseMotionListener, then follow the mousemove and build you own TollTip.
Noah

Draw a line after zoom in

Hi All,
I want to draw a line after zooming in/out the image. If the image is not scaled, then ever thing is fine. But once I scaled the image and draw the line, the position is not coming correctly. Can you correct me, what's my mistake?
package imagetest;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;
public class ZoomAndDraw extends JPanel
    private java.awt.image.BufferedImage image = null;
    private Line2D.Double line = null;
    private double scale = 1.0;
    private int value = 16;
    private double translateX = 0.0;
    private double translateY = 0.0;
    private MouseManager manager = null;
    public ZoomAndDraw()
        line = new Line2D.Double();
        readImage();
        manager = new MouseManager(this);
        addMouseListener(manager);
        addMouseMotionListener(manager);
    private void readImage()
        try
            image = javax.imageio.ImageIO.read(new java.io.File("D:/IMG.JPG"));
        catch (Exception ex)
    @Override
    public Dimension getPreferredSize()
        if (image != null)
            int w = (int) (scale * image.getWidth());
            int h = (int) (scale * image.getHeight());
            return new Dimension(w, h);
        return new Dimension(640, 480);
    @Override
    protected void paintComponent(Graphics g)
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D) g;
        if (image == null)
            return;
        double x = (getWidth() - scale * image.getWidth()) / 2;
        double y = (getHeight() - scale * image.getHeight()) / 2;
        g2.translate(x, y); // move to center of image
        g2.scale(scale, scale); // scale
        translateX = 0 - x * (1 / scale);
        translateY = 0 - y * (1 / scale);
        g2.translate(translateX, translateY); // move back
        g2.drawImage(image, 0, 0, this);
        g2.setColor(Color.RED);
        g2.draw(line);
        g.dispose();
    public void setLine(Point start, Point end)
        line.setLine(start, end);
        repaint();
    public void addLine(Point start, Point end)
        line.setLine(start, end);
        repaint();
    public void ZoomIn()
        value++;
        scale = (value + 4) / 20.0;
        revalidate();
        repaint();
    public void ZoomOut()
        if (value <= -3)
            return;
        value--;
        scale = (value + 4) / 20.0;
        revalidate();
        repaint();
    class MouseManager extends MouseAdapter
        ZoomAndDraw component;
        Point start;
        boolean dragging = false;
        public MouseManager(ZoomAndDraw displayPanel)
            component = displayPanel;
        @Override
        public void mousePressed(MouseEvent e)
            start = e.getPoint();
            dragging = true;
        @Override
        public void mouseReleased(MouseEvent e)
            if (dragging)
                component.addLine(start, e.getPoint());
                component.repaint();
            dragging = false;
        @Override
        public void mouseDragged(MouseEvent e)
            Point end = e.getPoint();
            if (dragging)
                component.setLine(start, end);
                component.repaint();
            else
                start = end;
    public static void main(String[] args)
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        ZoomAndDraw zoomAndDraw = new ZoomAndDraw();
        //Zoom in call
        zoomAndDraw.ZoomIn();
        zoomAndDraw.ZoomIn();
        zoomAndDraw.ZoomIn();
        frame.add(zoomAndDraw);
        frame.setPreferredSize(new Dimension(640, 480));
        frame.setSize(new Dimension(640, 480));
        frame.setVisible(true);
}Thanks and Regards
Raja.

Hi,
I'm having one more doubt. Just assume, after calling the ZoomIn(), I am drawing a line.
Subsequent ZoomIn() calls (let's say 5 times), changed the actual line position. How do I synchronize the zoom in call with the line coordinates?
public void FireZoomIn()
        new Thread(new Runnable()
            public void run()
                try
                    Thread.sleep(3000);
                catch (InterruptedException iex)
                int count = 0;
                while (count++ < 5)
                    ZoomIn();
        }).start();
public void mouseReleased(MouseEvent e)
            if (dragging)
                component.addLine(start, e.getPoint());
                component.repaint();
                component.FireZoomIn();
            dragging = false;
        }Thanks and Regards
Raja.

Turn off auto scale in XY graph when zooming?

Hi!
I have a xy graph with 3 graphs and 3 scales. Whenever I zoom in and then go back to "full view" one of my scales switches from a fixed scale to autoscale. The others stay fixed.
Anyone knows what this could be?
bye
hmann

Hello Hmann,
I'm not sure what's the behavior you talk about as you haven't provided an example, but I think this vi might help.
What you may need to do to avoid that behavior is to assign to each plot one Y Scale (you need to use the Plot legend to do this). I've done so in this example, and the Autoscale wasn't affected. Please let me know if this doesn't solve it and how to reproduce it step by step.
Regards,
Jorge M.
Attachments:
XY_GraphTest.vi ‏69 KB

Reeal-time 3D graph with multiple plots

Hello,
I realise this is a very complicated question and I would appreciate any healp anyone could give. I am trying to:
1- draw a 3D graph with three plots (plots are from coordinates read from XL)
2- do it in real time, so that only one point from each plot shows at a time (the previous points disappear)
Can anyone help me out? I looked at Sarah's advice and I got as far as the program that I have attached. I have also attached an XL sheet with random values (actually I didn't have any luck attaching two files).
I would appreciate any response!
Thank-you,
Confused
Attachments:
3D graph.vi ‏127 KB

IBAHKA wrote:
Could you look at this new and improved (yet not perfect program) and help me out?
Issues:
Why do the axis all change and why aren't the points drawn all at once? ALso, is it possible to retain in memory and plot more than one point from each plot at once?
The axis are changing because you didn't ask for constant scales. Just right-click on the 3D graph indicator and go to CWGraph3D/Properties... There a pop-up window will give you access to a number of settings. Explore. You will find how to allow the user to pan/zoom/rotate the graph, and to disable autoscaling...
The points are not drawn all at once because you pass them one at a time!!! To plot several points at once, you have to build an array with the proper number of points (initialise first) then you can rotate the array after plotting, and replace the first point at the next iteration.
Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...

Sir, We have around 500 items as Insurance Spares in the stores. These spares are checked once in 6 months for their healthiness, storage, etc with a special checklist. We want this checklist an schedule in SAP ( MM). How to do it? Please help.

Sir, We have around 500 items as Insurance Spares in the stores. These spares are checked once in 6 months for their healthiness, storage, etc with a special checklist. We want this checklist an schedule in SAP ( MM). How to do it? Please help.We are presently doing it as similar to PM schedule ( PM module) but want it in MM module.

Hi Prerna
Please refer the this doc ...it might help you
http://www.erptips.com/Samples/ERPtips-SAP-Training-Manual-SAMPLE-CHAPTER-from-Basic-Quality-Management.pdf
and kindly update the status if it works or not
Regards
Partha

LabVIEW crashes when you run a VI that contains a mixed signal graph with a multi-plot cursor.

Hello, LV 8.2.1 notes indicates the following bug fix:
43SAIR2A Fixed an issue where LabVIEW crashes when you run a VI that contains a mixed signal graph with a multi-plot cursor.
I am running this version, and still have this behavior. Is there anything I may be missing, and/or certain circumstances that may still be causing this?
thanks in advance,
Darren

Darren:
I looked at the CAR ID that you mentioned and the issue has been resolved in LabVIEW 8.2.1. To verify something similar, I ran the attached VI and things worked just fine. Please feel free to send me the steps to follow to reproduce the issue you are running into in 8.2.1.
Regards,
Rudi N.
Attachments:
MixedGraphs.vi ‏15 KB

Exporting from a 2D line graph with .jpeg extension

Is there any way to export from an ordinary 2D line graph with .jpeg extension so that with using this image i will improve my result of exporting excel.
e.g. i have found and example and added a button as you will see when you run this code.I will click this button and it will export this line graph with extension .jpeg so that i will see it as an ordinary image at my home directory.
Thanks for any helpful comment
Regars,
Serhat
* To change this template, choose Tools | Templates
* and open the template in the editor.
* @author led1433
import java.awt.*;
import java.awt.font.*;
import java.awt.geom.*;
import javax.swing.*;
public class LineGraph
    public static void main(String[] args)
        int x1 = 1000,y1 = 0;
        JFrame f = new JFrame();
        JButton exportToJPegButton = new JButton("EXPORT WITH JPEG");
        exportToJPegButton.setToolTipText("Exports Graph with extension *jpeg");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        exportToJPegButton.setSize(200,25);
        f.add(exportToJPegButton).setLocation(x1, y1);
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        f.setSize(400,400);
        f.setLocation(200,200);
        f.setVisible(true);
class GraphPanel extends JPanel
    final int
        HPAD = 60,
        VPAD = 40;
    int[] data;
    Font font;
    public GraphPanel()
        data = new int[] {
            120, 190, 211, 75, 30, 290, 182, 65, 85, 120, 100, 101
        font = new Font("lucida sans regular", Font.PLAIN, 16);
        setBackground(Color.white);
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        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);
        g2.setFont(font);
        FontRenderContext frc = g2.getFontRenderContext();
        int w = getWidth();
        int h = getHeight();
        // scales
        float xInc = (w - HPAD - VPAD) / 11f;
        float yInc = (h - 2*VPAD) / 10f;
        int[] dataVals = getDataVals();
        float yScale = dataVals[2] / 10f;
        // ordinate
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        float x1 = HPAD, y1 = VPAD, x2 = HPAD - 3, y2;
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            g2.draw(new Line2D.Double(x1, y1, x2, y1));
            y1 += yInc;
        // labels
        String text; LineMetrics lm;
        float xs, ys, textWidth, height;
        for(int j = 0; j <= 10; j++)
            text = String.valueOf(dataVals[1] - (int)(j * yScale));
            textWidth = (float)font.getStringBounds(text, frc).getWidth();
            lm = font.getLineMetrics(text, frc);
            height = lm.getAscent();
            xs = HPAD - textWidth - 7;
            ys = VPAD + (j * yInc) + height/2;
            g2.drawString(text, xs, ys);
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        g2.draw(new Line2D.Double(HPAD, h - VPAD, w - VPAD, h - VPAD));
        // tic marks
        x1 = HPAD; y1 = h - VPAD; y2 = y1 + 3;
        for(int j = 0; j < 12; j++)
            g2.draw(new Line2D.Double(x1, y1, x1, y2));
            x1 += xInc;
        // labels
        ys = h - VPAD;
        for(int j = 0; j < 12; j++)
            text = String.valueOf(j + 1);
            textWidth = (float)font.getStringBounds(text, frc).getWidth();
            lm = font.getLineMetrics(text, frc);
            height = lm.getHeight();
            xs = HPAD + j * xInc - textWidth/2;
            g2.drawString(text, xs, ys + height);
        // plot data
        x1 = HPAD;
        yScale = (float)(h - 2*VPAD) / dataVals[2];
        for(int j = 0; j < data.length; j++)
            y1 = VPAD + (h - 2*VPAD) - (data[j] - dataVals[0]) * yScale;
            if(j > 0)
                g2.draw(new Line2D.Double(x1, y1, x2, y2));
            x2 = x1;
            y2 = y1;
            x1 += xInc;
    private int[] getDataVals()
        int max = Integer.MIN_VALUE;
        int min = Integer.MAX_VALUE;
        for(int j = 0; j < data.length; j++)
            if(data[j] < min)
                min = data[j];
            if(data[j] > max)
                max = data[j];
        int span = max - min;
        return new int[] { min, max, span };
}

GraphPanel stays the same.
public class JpegExport {
    public static void main(String[] args) {
        final GraphPanel graphPanel = new GraphPanel();
        JButton exportToJPegButton = new JButton("EXPORT WITH JPEG");
        exportToJPegButton.setToolTipText("Exports Graph with extension *jpeg");
        exportToJPegButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                exportToJpeg(graphPanel);
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.getContentPane().add(exportToJPegButton, BorderLayout.NORTH);
        f.getContentPane().add(graphPanel, BorderLayout.CENTER);
        f.setSize(400, 400);
        f.setLocationRelativeTo(null);
        f.setVisible(true);
    private static void exportToJpeg(GraphPanel graphPanel) {
        try {
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            int h = graphPanel.getHeight();
            BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
            Graphics2D g2 = image.createGraphics();
            graphPanel.paint(g2);
            g2.dispose();
            ImageIO.write(image, "jpeg", new File("export.jpg"));
        } catch (IOException e) {
            e.printStackTrace();
}

How do I create a graph with two different y-axis variables with the same x-axis (therefor having two curves)?, How do I create a graph with two different y-axis variables with the same x-axis (therefor having two curves)?

How do I create a graph with two different y-axis variables with the same x-axis (therefor having two curves)?, How do I create a graph with two different y-axis variables with the same x-axis (therefor having two curves)?

Hi Libby,
Select all three columns of data. All three must be 'regular' columns, not Header columns, and the X values must be in the leftmost column.
Click the Charts button and choose the Scatter chart.
The resulting chart will initially show only the first and second columns of data, and the selection will have been reduced to show this.
Click the gear icon at the top left of the selection and choose Share X Values.
You should see a result similar to this:
Notes:
The values on my sample table contain a random element, so they have changed from thhe first image to the second.
The chart is as created by Numbers, with two edits:
Data points have been connected with curves, using the Chart nspector.
The curves were selected and their stroke increased to 2pts, using the stroke formating button in the format bar.
Regards,
Barry

TO DRAW A TABLE WITH MULTIPLE ROWS AND MULTIPLE COLOUMNS IN FORM

Hi,
How to draw a table with multiple rows and columns seperated by lines in form printing?

check this
http://sap-img.com/ts003.htm
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Regarding draw a graph with zoom speciality

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