Diplay Graph

Hi all,
I want to display a graph in output by comparing data in two alv's which are displayed in the same screen .
__Ranjit

see this thread.
Graph In ALV
http://help.sap.com/saphelp_bw33/helpdata/en/5d/ad993888a5b268e10000009b38f8cf/content.htm

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Help needed with passing data between classes, graph building application?

Good afternoon please could you help me with a problem with my application, my head is starting to hurt?
I have run into some difficulties when trying to build an application that generates a linegraph?
Firstly i have a gui that the client will enter the data into a text area call jta; this data is tokenised and placed into a format the application can use, and past to a seperate class that draws the graph?
I think the problem lies with the way i am trying to put the data into co-ordinate form (x,y) as no line is being generated.
The following code is from the GUI:
+public void actionPerformed(ActionEvent e) {+
+// Takes data and provides program with CoOrdinates+
int[][]data = createData();
+// Set the data data to graph for display+
grph.showGrph(data);
+// Show the frame+
grphFrame.setVisible(true);
+}+
+/** set the data given to the application */+
+private int[][] createData() {+
+     //return data;+
+     String rawData = jta.getText();+
+     StringTokenizer tokens = new StringTokenizer(rawData);+
+     List list = new LinkedList();+
+     while (tokens.hasMoreElements()){+
+          String number = "";+
+          String token = tokens.nextToken();+
+          for (int i=0; i<token.length(); i++){+
+               if (Character.isDigit(token.charAt(i))){+
+                    number += token.substring(i, i+1);+
+               }+
+          }     +
+     }+
+     int [][]data = new int[list.size()/2][2];+
+     int index = -2;+
+     for (int i=0; i<data.length;i++){+
+               index += 2;+
+               data[0] = Integer.parseInt(+
+                         (list.get(index).toString()));+
+               data[i][1] = Integer.parseInt(+
+                         (list.get(index +1).toString()));+
+          }+
+     return data;+
The follwing is the coding for drawing the graph?
+public void showGrph(int[][] data) {+
this.data = data;
repaint();
+}     +
+/** Paint the graph */+
+protected void paintComponent(Graphics g) {+
+//if (data == null)+
+     //return; // No display if data is null+
super.paintComponent(g);
+// x is the start position for the first point+
int x = 30;
int y = 30;
for (int i = 0; i < data.length; i+) {+
+g.drawLine(data[i][0],data[i][1],data[i+1][0],data[i+1][1]);+
+}+
+}+

Thanks for that tip!
package LineGraph;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.util.List;
public class GUI extends JFrame
implements ActionListener {
private JTextArea Filejta;
private JTextArea jta;
private JButton jbtShowGrph = new JButton("Show Chromatogram");
public JButton jbtExit = new JButton("Exit");
public JButton jbtGetFile = new JButton("Search File");
private Grph grph = new Grph();
private JFrame grphFrame = new JFrame();   // Create a new frame to hold the Graph panel
public GUI() {
     JScrollPane pane = new JScrollPane(Filejta = new JTextArea("Default file location: - "));
     pane.setPreferredSize(new Dimension(350, 20));
     Filejta.setWrapStyleWord(true);
     Filejta.setLineWrap(true);
    // Store text area in a scroll pane
    JScrollPane scrollPane = new JScrollPane(jta = new JTextArea("\n\n Type in file location and name and press 'Search File' button: - "
              + "\n\n\n Data contained in the file will be diplayed in this Scrollpane "));
    scrollPane.setPreferredSize(new Dimension(425, 300));
    jta.setWrapStyleWord(true);
    jta.setLineWrap(true);
    // Place scroll pane and button in the frame
    JPanel jpButtons = new JPanel();
    jpButtons.setLayout(new FlowLayout());
    jpButtons.add(jbtShowGrph);
    jpButtons.add(jbtExit);
    JPanel searchFile = new JPanel();
    searchFile.setLayout(new FlowLayout());
    searchFile.add(pane);
    searchFile.add(jbtGetFile);
    add (searchFile, BorderLayout.NORTH);
    add(scrollPane, BorderLayout.CENTER);
    add(jpButtons, BorderLayout.SOUTH);
    // Exit Program
    jbtExit.addActionListener(new ActionListener(){
    public void actionPerformed(ActionEvent e) {
       System.exit(0);
    // Read Files data contents
     jbtGetFile.addActionListener(new ActionListener(){
     public void actionPerformed( ActionEvent e) {
               String FileLoc = Filejta.getText();
               LocateFile clientsFile;
               clientsFile = new LocateFile(FileLoc);
                    if (FileLoc != null){
                         String filePath = clientsFile.getFilePath();
                         String filename = clientsFile.getFilename();
                         String DocumentType = clientsFile.getDocumentType();
     public String getFilecontents(){
          String fileString = "\t\tThe file contains the following data:";
     return fileString;
     // Register listener     // Create a new frame to hold the Graph panel
    jbtShowGrph.addActionListener(this);
    grphFrame.add(grph);
    grphFrame.pack();
    grphFrame.setTitle("Chromatogram showing data contained in file \\filename");
/** Handle the button action */
public void actionPerformed(ActionEvent e) {
    // Takes data and provides program with CoOrdinates
    int[][]data = createData();
    // Set the data data to graph for display
    grph.showGrph(data);
    // Show the frame
    grphFrame.setVisible(true);
/** set the data given to the application */
private int[][] createData() {
       String rawData = jta.getText();
       StringTokenizer tokens = new StringTokenizer(rawData);
       List list = new LinkedList();
       while (tokens.hasMoreElements()){
            String number = "";
            String token = tokens.nextToken();
            for (int i=0; i<token.length(); i++){
                 if (Character.isDigit(token.charAt(i))){
                      number += token.substring(i, i+1);
       int [][]data = new int[list.size()/2][2];
       int index = -2;
       for (int i=0; i<data.length;i++){
                 index += 2;
                 data[0] = Integer.parseInt(
                         (list.get(index).toString()));
               data[i][1] = Integer.parseInt(
                         (list.get(index +1).toString()));
     return data;
public static void main(String[] args) {
GUI frame = new GUI();
frame.setLocationRelativeTo(null); // Center the frame
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setTitle("Clients Data Retrival GUI");
frame.pack();
frame.setVisible(true);
package LineGraph;
import javax.swing.*;
import java.awt.*;
public class Grph extends JPanel {
     private int[][] data;
/** Set the data and display Graph */
public void showGrph(int[][] data) {
this.data = data;
repaint();
/** Paint the graph */
protected void paintComponent(Graphics g) {
//if (data == null)
     //return; // No display if data is null
super.paintComponent(g);
//Find the panel size and bar width and interval dynamically
int width = getWidth();
int height = getHeight();
//int intervalw = (width - 40) / data.length;
//int intervalh = (height - 20) / data.length;
//int individualWidth = (int)(((width - 40) / 24) * 0.60);
////int individualHeight = (int)(((height - 40) / 24) * 0.60);
// Find the maximum data. The maximum data
//int maxdata = 0;
//for (int i = 0; i < data.length; i++) {
//if (maxdata < data[i][0])
//maxdata = data[i][1];
// x is the start position for the first point
int x = 30;
int y = 30;
//draw a vertical axis
g.drawLine(20, height - 45, 20, (height)* -1);
// Draw a horizontal base line4
g.drawLine(20, height - 45, width - 20, height - 45);
for (int i = 0; i < data.length; i++) {
//int Value = i;
// Display a line
//g.drawLine(x, height - 45 - Value, individualWidth, height - 45);
g.drawLine(data[i][0],data[i][1],data[i+1][0],data[i+1][1]);
// Display a number under the x axis
g.drawString((int)(0 + i) + "", (x), height - 30);
// Display a number beside the y axis
g.drawString((int)(0 + i) + "", width - 1277, (y) + 900);
// Move x for displaying the next character
//x += (intervalw);
//y -= (intervalh);
/** Override getPreferredSize */
public Dimension getPreferredSize() {
return new Dimension(1200, 900);

How do I make an XY-Graph plot points over time?

I am building a program to plot and take data of a relationship between two voltages. One is voltage is uniquely dependent on the other. So far I have successfully built an XY-Graph to plot the voltages against each other (Voltage1 along the x-axis and Voltage2 along the y-axis). However, the XY-Graph only diplays the point (V1, V2) at the instantaneous time I am looking at it, and does not continuously plot different points as I vary the independent voltage. I need the graph to display all the points that occur as I vary the independent voltage. As of right now, all I see is one little cursor that moves all over the graph as I vary it. My program consists of a While Loop that contains all of the following: two seperate data anolog input functions that take both voltage separately from my board. The the output samples from each 'AI Sample' function are then bundled into one cluster using the 'bundle' function. The cluster output from the 'bundle' function is then wired to a 'build array' function. The 1-D array output from the 'build array' function is then wired to my 'XY-Graph'. How do I get the XY-Graph to plot a point every millisecond or so?

Bundling and then using the Build Array is not correct. Yuo can see the correct method in the help for an XY Graph below. In order to use the normal XY Grpah, you would have two shif registers. One for the X array and one for the Y. Bundle the two arrays and then wire to the graph.
The other way is to use the Express XY Graph. With that, you can just wire your scalars to the X and Y inputs and set the Reset input to false.
Message Edited by Dennis Knutson on 11-12-2007 06:32 PM
Attachments:
XY Graph 1.PNG ‏21 KB
XY Graph 2.PNG ‏6 KB

Display counter output on graph

I have two counters generating continuous digial pulse trains from my PCI 6010, and I'm trying to display the output on a graph. I've got the output of one counter connected to an AI line that leads to a waveform graph, but I can't get anything on the graph. I've measured the output via external means, so I know the counters are generating the appropriate pulses.
Eventually I'd like to have some sort of indicator for each counter that indicates whether the counter is in the 'on' or 'off' state, but I figured getting the counter outputs to diplay on a graph would be a good first step.
My VI is below; the display part that isn't working is at the bottom of the case structure.
Thanks.

Once your code goes into the inner while loop your graph will never be updated since it will only execute one time. In order to update the graph continually you will need a parallel which handles the graph updates. A good way to pass data between the parallel tasks is a queue.
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This is actually a bit unclear. What do you define as an "update"? Do you have "synchronous diplay" set? Do you consider it an "update" if you send the same data again to it?
It would make more sense to define a boolean that is lit whenever the graph data changed. Just put the graph data in a shift register and compare the current data to the data from the previous loop iteration.
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hi
I have a small problem with the "waveform graph" - what I want is the X-axis to diplay the time (this is easy:-) ) but I want the time to start at Zero and the display seconds from when I start the VI?? when I choose "relative time" its displaying seconds but not from zero?? - another thing: the data displayed in the graph I also write to a spreadsheet file and I then use the "tick count [ms]" which is also written to the spreadsheet in order to get a "timestamp" for each datapoint!! this works ok! but isent there someway that the graphblock can give the timestamp?? hope you understand what I mean??

Hi Viller,
I still didn't get it all, but if you don't have a timestamp for every Y-value, you need to create it for yourself. For an example I made a solution in the simple and the cool way:
Greets, dave
Message Edited by daveTW on 02-27-2007 11:56 AM
Greets, Dave
Attachments:
Example_BD.png ‏7 KB

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I have a report with 2 columns
First is cumulated budget for the full year.
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Hello folks,
Cureently m working on R12 upgrade project.
And we have a report which is working fine 12 but the graphs are not getting displayed as like 11i.
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best regards
Martin

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I have attached a very simple example of using a reference to update your front panel graph.
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Attachments:
Reference Example(LV7.1).zip ‏17 KB

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Hi Fenny,
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Thanks,
Haree

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Diplay Graph

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