Draw Circle Using Array

Hi,
I have a sizeable array which has an N by N size. How can I draw a circle in my array using digits, 0 or 255, in U8 representation?
I have a Flatten Pixmap.vi and Draw Flatten Pixmap.vi to assist in the drawing.
So hope someone out there can help to enlighten me in the logic.
Thanks and Regards,
Jack

There is a function for the 2D picture control that draws real nice circles. You can then turn that picture into whatever you want.
What is it that you are trying to accomplish?
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

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Thanks Leonard..
This is my Circle draw code.. but it's not working properly..
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ASFixed inCenterY = mediaBox.top;
ASFixed inRadius = ASInt32ToFixed(2);
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PDEContentAddElem(pdeContent, kPDEAfterLast, (PDEElement)mov);
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Hi i would like help with: When I draw circle and add stroke I can not see stroke I use Photoshop CS 5

Hi i would like help with:
When I draw circle and add stroke I can not see stroke
I use Photoshop CS 5

Make sure the stroke is set to a color and not to the symbol that appears here for Fill

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Thanks!

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Draw circles in swing..

hello.
I'm making a program that draws circles in a frame and has some buttons in another program.
However, there are some stack overflow errors..
help please~
[error messages]
Exception in thread "main" java.lang.StackOverflowError
at java.util.Hashtable.get(Hashtable.java:336)
at javax.swing.UIDefaults.getFromHashtable(UIDefaults.java:142)
at javax.swing.UIDefaults.get(UIDefaults.java:130)
at javax.swing.MultiUIDefaults.get(MultiUIDefaults.java:44)
at javax.swing.UIDefaults.getColor(UIDefaults.java:380)
at javax.swing.UIManager.getColor(UIManager.java:590)
at javax.swing.LookAndFeel.installColors(LookAndFeel.java:58)
at javax.swing.LookAndFeel.installColorsAndFont(LookAndFeel.java:92)
at javax.swing.plaf.basic.BasicPanelUI.installDefaults(BasicPanelUI.java:49)
at javax.swing.plaf.basic.BasicPanelUI.installUI(BasicPanelUI.java:39)
at javax.swing.JComponent.setUI(JComponent.java:652)
at javax.swing.JPanel.setUI(JPanel.java:131)
at javax.swing.JPanel.updateUI(JPanel.java:104)
at javax.swing.JPanel.<init>(JPanel.java:64)
at javax.swing.JPanel.<init>(JPanel.java:87)
at javax.swing.JPanel.<init>(JPanel.java:95)
at DrawCircle.<init>(DrawCircle.java:7)
at DrawCircle.<init>(DrawCircle.java:6)
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
public class GUI{
     DrawCircle circle = new DrawCircle(100,100,50);
     private JButton UpButton, DownButton, LeftButton, RightButton, IncreaseButton, DecreaseButton, InputButton;
     public void drawframe(){
                final JFrame CircleFrame = new JFrame("Frame for Circle");
                CircleFrame.getContentPane().add(circle);
                CircleFrame.setSize(200,200);
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          UpButton = new JButton("UP");
          UpButton.addActionListener(new ActionListener()     {
               public void actionPerformed(ActionEvent e){
                            circle.up();
                                if(circle.getY() - circle.getR() <= 0) {
                                    JOptionPane.showMessageDialog( CircleFrame, "Out of window");
                                    circle.setY(circle.getY() +10);
          RightButton = new JButton("RIGHT");
          RightButton.addActionListener(new ActionListener()     {
               public void actionPerformed(ActionEvent e)     {
                            circle.right();
                                if(circle.getX() + circle.getR() >= 500) {
                                    JOptionPane.showMessageDialog( CircleFrame, "Out of window");
                                    circle.setX(circle.getX() -10);
          LeftButton = new JButton("LEFT");
          LeftButton.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent e){
                            circle.left();
                                if(circle.getX() - circle.getR() <= 0) {
                                    JOptionPane.showMessageDialog( CircleFrame, "Out of window");
                                    circle.setX(circle.getX() +10);
          DownButton = new JButton("DOWN");
          DownButton.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent e){
                            circle.down();
                                System.out.println(circle.getY());
                                if(circle.getY() + circle.getR() >= 500) {
                                    JOptionPane.showMessageDialog( CircleFrame, "Out of window");
                                    circle.setY(circle.getY() -10);
          IncreaseButton = new JButton("INCREASE");
          IncreaseButton.addActionListener(new ActionListener()     {
               public void actionPerformed(ActionEvent e)     {
                            circle.increase();
                                if(circle.getY() + circle.getR() >= 500) {
                                    JOptionPane.showMessageDialog( CircleFrame, "Out of window");
                                    circle.setR(circle.getR() -10);
                                } else if(circle.getX() + circle.getR() >= 500) {
                                    JOptionPane.showMessageDialog( CircleFrame, "Out of window");
          DecreaseButton = new JButton("decrease");
                    DecreaseButton.addActionListener(new ActionListener(){
                            public void actionPerformed(ActionEvent e)     {
                                circle.decrease();
          JPanel ButtonPanel = new JPanel();
          ButtonPanel.add(IncreaseButton);
          ButtonPanel.add(DecreaseButton);
          ButtonPanel.add(DownButton);
          ButtonPanel.add(LeftButton);
          ButtonPanel.add(RightButton);
          ButtonPanel.add(UpButton);
          ButtonPanel.setLayout(new BoxLayout(ButtonPanel, BoxLayout.Y_AXIS));
                JFrame mainFrame = new JFrame("GUI for Circle Drawing");
          mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );
                mainFrame.add(ButtonPanel);
                mainFrame.pack();
          mainFrame.setVisible(true);
     public static void main(String [] args)     {
          GUI intf = new GUI();
          intf.drawframe();
}and the DrawCircle Class is
import java.awt.*;
import javax.swing.*;
public class DrawCircle extends JPanel{
     private int x, y, r;
        DrawCircle circle = new DrawCircle(100, 100, 50);
     public DrawCircle( int x , int y , int r){
          this.x = x;
          this.y = y;
          this.r = r;
     public int getR(){
          return r;
     public int getX(){
          return x;
     public int getY(){
          return y;
     public void setX(int x)     {
          this.x = x;
                repaint();
     public void setY(int y)     {
          this.y = y;
                repaint();
     public void setR(int r)     {
          this.r = r;
                repaint();
     public void paint(Graphics g){
          g.clearRect(0,0,400,400);
                g.drawOval(x-r, y-r, r*2, r*2);
        public void up() {
          circle.setY(circle.getY() -10);
        public void down() {
                circle.setY(circle.getY() +10);
        public void right() {
                circle.setX(circle.getX() +10);
        public void left() {
                circle.setX(circle.getX() -10);
        public void increase() {
                circle.setR(circle.getR() +10);
        public void decrease() {
                circle.setR(circle.getR() -10);


The problem is that you're constructing a new DrawCircle each time you construct a new DrawCircle, resulting in infinite recursion causing a stack overflow.
This line:DrawCircle circle = new DrawCircle(100, 100, 50);in your DrawCircle class is causing the problem, do you need it? Remove it and replace references to 'circle' in the class with 'this'.

Help using arrays in java

HI all,
I am working on a program that will print out my initials 'A' and 'T' using arrays. I am asked to initialize the first intial to '*' and the second intial to '@'. I wrote the code but the output is wrong. Can someone help me by letting me know what I am doing wrong in my arrray?I just get back my array of 30X30. I also wrote a driver but when I run the program, I really appreciate it so much.
public class Initial
     private char whichinitial ;
     private int MAX =30;//Maximum amount for 2-d Matrix
     char[][] letterMatrix = new char[MAX][MAX];//2-d Array 30 x30
     private boolean first = true;
     public Initial()
     { //FIlls Array full of '*'s
          whichinitial = '*';
          for(int i=0;i< MAX;i++)
               for(int j=0;i< MAX;i++)
                    letterMatrix[i][j] = whichinitial;
     public void setLetter(char letter)
     {//Setter for Letter
           whichinitial = letter;
     public char getLetter()
     {//Getter for Letter
          return whichinitial;
     public void firstLetter()
     { //Creates an A shape
          for(int i=0;i< MAX;i++)
            for(int j=0;j< MAX;j++)
                  if((i>0)|| ((i<6) || ((j>0) && (j<29))))
                     letterMatrix[j] =whichinitial;
     public void secondLetter()
     {//Creates an T shape
          first = false;
               for(int i=0;i <MAX;i++)
               for(int j=0;j <MAX;j++)
                    if((i>1) ||(j < 29)||(j>5)||(i>10))
                         letterMatrix[i][j] = whichinitial;
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     {//Displays the Initials
          if(first)
               System.out.println("\n \n \n My First Initial," + whichinitial + ", follows:");
          else
               System.out.println("\n \n \n My Last Initial," + whichinitial + ", follows:");
               for(int i=0;i <MAX;i++)
                    System.out.println();
                    for(int j=0;j <MAX;j++)
                         if(letterMatrix[i][j] == '*')
                              System.out.print(" ");
                         else
                              System.out.print(letterMatrix[i][j]);

I am trying to write a program using a matrix. The size of the maxtrix should be 30X30. The first initial shoulld be initialized to '*' and the secind initial should be initialized to '@'. Both initials should be 30 characters high and 30 characters wide and the initials should also represent the uppercase letter of your initials. I know that the first initial's matrix needs to be filled up vertically and the second initial needs to be filled horizontally but the output is wrong....PLease Help!
Message was edited by:
apples03

Using arrays in a jsf page

Hi guys,
I'm developing an ADF application in JDev 11.1.1.6.0. I have problem about using arrays in jsp page. I have an iterator that brings me data from UCM. I just want to take every documents seperately and use in a Jquery division by division.
Can i have chance to use an array tag in that page? Or how can i make it possible my work in a different way?
Thank you so much,
Erdo

Hi Frank,
I've already use an iterator. I just want to take datas and after close the af:iterator tag. Then i will use those datas in a different block.
My code :
<af:iterator var="node" value="#{nodes}" id="i1">
<af:outputText value="#{node.propertyMap['CSGMNEWS_REGDEF:Desc'].asTextHtml}"
id="ot1"/>
</af:iterator>
I want to take all informations from node.PropertyMap[] and then i will set the values of outputText with those informations. I hope I'm clear.
Regards,
Erdo
Edited by: erdo on 20.Mar.2013 10:21

Using arrays in apex

hi i want to know if some can guide me how to use array in apex.
i have a tabuler report with 4 columns.
i need to write a validation in the tabuler report for that i need to used array.
can I directly access the colums as i have shown below? or do i need to decleare this arrays some were in apex?
e.g
FOR i IN 1 .. ow_app.g_f01.COUNT
loop.........................
LOGIC
end loop;
from what i understand i can access each column as ow_app.g_f01,ow_app.g_f02,ow_app.g_f03,ow_app.g_f04 does this make sense?
thanks a lot.

Hi user591315 (please tell us your name - we're a friendly group!),
In answer to this and your previous related post, there is an excellent example of what you're looking to accomplish provided by Denes Kubicek available at http://apex.oracle.com/pls/otn/f?p=31517:41
Hope this helps,
John
If you find this information useful, please remember to mark the post "helpful" or "correct" so that others may benefit as well.

Using Arrays in a program

First, I would like to thank everyone in this forum for all the help they have given me over the past few weeks. With that said, I am currently trying to alter the following code to accept and use arrays to end to produce three seperate results. The program now as three hard coded variables which are
Amount = 200000.00;
Term = 30;
InterestRate = .0575;
I need to have the program work the same, but produce results for three different Terms and Three different periods. Below is the code the I am working on, I have added two arrays containing the required information. I am having a hard time coming up with a for statment to move the program through the two arrays. Any pushes in the right direction would be great. I left the hard code variable in place, I know that I do need to remove them and alter the equations. I just thought it would be easier for everyone to understand if I left the code in working form.
import java.math.*;
import java.text.*;
import java.util.*;
// The Payment class displays a predetermined monthly mortgage payment
public class Payment
     public static void main(String[]arguments)
          //Creates Two Arrays for InterestRates and Terms
          double[] InterestRates = {.0535, .055, .0575};
          int[] Terms = {7, 15, 30};
          //Creates variables
          double Amount;
          int Term;
          double InterestRate;
          //Assigns values to variables
          Amount = 200000.00;
          Term = 30;
          InterestRate = .0575;
          //Alters the display format of Amount variable
          NumberFormat n = NumberFormat.getCurrencyInstance(Locale.US);
          String s = n.format(Amount);
          //Creates variables
          double MonthlyInterestRate;
          int TotalMonths;
          double Payment;
          //Assigns values to variables
          MonthlyInterestRate = InterestRate / 12;
          TotalMonths = Term * 12;
          Payment = Amount* MonthlyInterestRate / (1-(Math.pow((1+MonthlyInterestRate ),(-TotalMonths))));
          //Takes Payment variable and round answer to 2 decimal points
          BigDecimal bd = new BigDecimal(Payment);
bd = bd.setScale(2, BigDecimal.ROUND_DOWN);
          //Instructions to display various varibles
          System.out.println("Cost of Mortgage "+ s);
          System.out.println("Length of Term " + Term);
          System.out.println("Interest Rate 5.75% ");
          System.out.println("The monthly payment of this loan is $" + bd);
          System.out.println();
          //Creates new set of variables
          double MonthlyInterest;
          double MonthlyPrincipal;
          double TotalInterestPaid;
          int NumberofPayments;
          //Creates Balance variable
          double Balance;
          //Initialization of Balance variable
          Balance = 200000;
          TotalInterestPaid = 0;
          NumberofPayments = 360;
          //Creates a loop that calculates the entire term of loan
          do
          MonthlyInterest = Balance * (InterestRate / 12);
          MonthlyPrincipal = Payment - MonthlyInterest;
          Balance = Balance - MonthlyPrincipal;
          TotalInterestPaid = TotalInterestPaid + MonthlyInterest;
          NumberofPayments = NumberofPayments - 1;
          //Takes current balance and rounds the answer to two digits
          BigDecimal bb = new BigDecimal(Balance);
bb = bb.setScale(2, BigDecimal.ROUND_DOWN);
          BigDecimal tip = new BigDecimal(TotalInterestPaid);
                    tip = tip.setScale(2, BigDecimal.ROUND_UP);
          System.out.println("New Loan Balance " + bb);
          System.out.println();
          System.out.println("Total Interest Paid " + tip);
          System.out.println();
          System.out.println("Number of Payments remaining " + NumberofPayments);
          System.out.println();
          //The following lines of code pauses the loop to allow the user to read the output
          //The speed of th display can be adujusted to a wide variety of speeds
          try
               Thread.sleep(400);
               catch (InterruptedException exc)
          //Loop condition
          while (NumberofPayments > 0);
//Ends Application

Try this. It should give you some ideas. :)
import java.math.BigDecimal;
import java.text.NumberFormat;
import java.util.Locale;
// The Payment class displays a predetermined monthly mortgage payment
public class Payment {
    public static final NumberFormat CURRENCY_FORMAT = NumberFormat.getCurrencyInstance(Locale.US);
    public static final double[] INTEREST_RATES = {.0535D, .055D, .0575D};
    public static final int[] TERMS = {7, 15, 30};
    public static final double AMOUNT = 200000.00;
    public static final int MONTHS_PER_YEAR = 12;
    public static void main(String[] arguments) {
        for (int t = 0; t < TERMS.length; t++) {
            for (int i = 0; i < INTEREST_RATES.length; i++) {
                displayPayments(AMOUNT, INTEREST_RATES, TERMS[t]);
private static void displayPayments(double amount, double interestRate, int term) {
//Creates variables
//Assigns values to variables
double monthlyInterestRate = interestRate / MONTHS_PER_YEAR;
int totalMonths = term * MONTHS_PER_YEAR;
double payment = amount * monthlyInterestRate / (1 - Math.pow(1 + monthlyInterestRate, -totalMonths));
//Instructions to display various varibles
System.out.println("Cost of Mortgage " + CURRENCY_FORMAT.format(amount));
System.out.println("Length of Term " + term);
System.out.println("Interest Rate " + new BigDecimal(interestRate * 100).setScale(2, BigDecimal.ROUND_HALF_UP) + '%');
System.out.println("The monthly payment of this loan is " + CURRENCY_FORMAT.format(payment));
System.out.println();
//Creates new set of variables
double totalInterestPaid = 0.0D;
//Creates balance variable, Initialization of balance variable
double balance = amount;
//Creates a loop that calculates the entire term of loan
System.out.println("New Loan balance, Total Interest Paid, Number of Payments remaining");
for (int numberofPayment = totalMonths; numberofPayment > 0; numberofPayment--) {
double monthlyInterest = balance * monthlyInterestRate;
double monthlyPrincipal = payment - monthlyInterest;
balance -= monthlyPrincipal;
totalInterestPaid += monthlyInterest;
//Takes current balance and rounds the answer to two digits
BigDecimal bb = new BigDecimal(balance);
bb = bb.setScale(2, BigDecimal.ROUND_DOWN);
BigDecimal tip = new BigDecimal(totalInterestPaid);
tip = tip.setScale(2, BigDecimal.ROUND_UP);
System.out.println(CURRENCY_FORMAT.format(bb.doubleValue()) + ", " +
CURRENCY_FORMAT.format(tip.doubleValue()) + ", " +
numberofPayment);
System.out.println();
//Ends Application

Using arrays in forms

Hi All!
Anybody know how to use Arrays in Forms 6?
Best regards.

Hello,
have you tried collections ?
Declare
   TYPE TYP_NUM_ARRAY IS TABLE OF NUMBER INDEX BY BINARY_INTEGER ;
   mytab TYP_NUM_ARRAY ;
Begin
   For i IN 1..10 Loop
      mytab(i) := i ;
   End loop ;
End ;Francois

Using arrays in JAVA

Hi Guys,
I always had a few problems using arrays and now I need to use them and I am stuck.
on my program i need to create an array of int with the numbers 1 to 1000 in it for this I have done:
int[ ] array;
on the class constructor
array = new int[1000];
to fill the array:
for (int i = 0; i < array.length; i++)
     array[i] = i;
The problem is that I always get an ArrayIndexOutOfBoundsException error.
I know how to solve it which is to create an array with 1001 elements but is there a more elegant way of creating the array or this is the way to do it?
To put my question in another way if any of you Guys was creating this program which way would you do it.
Best regards
          Luis

Sloppy of me. This is a bit better:
package cruft;
import java.util.Arrays;
* A class for a one-based array of ints.
public class OneBasedIntArray
   private int [] values;
   public static void main(String[] args)
      int [] values = new int[args.length];
      for (int i = 0; i < args.length; i++)
         values[i] = Integer.parseInt(args);
OneBasedIntArray intArray = new OneBasedIntArray(values);
System.out.println(intArray);
public OneBasedIntArray(int[] values)
this.values = new int[values.length];
System.arraycopy(values, 0, this.values, 0, values.length);
public int getValue(int index)
if (index <= 0)
throw new IllegalArgumentException("this array is one-based");
return values[index-1];
public void setValue(int index, int value)
if (index <= 0)
throw new IllegalArgumentException("this array is one-based");
this.values[index-1] = value;
public boolean equals(Object o)
if (this == o)
return true;
if (o == null || getClass() != o.getClass())
return false;
OneBasedIntArray intArray = (OneBasedIntArray) o;
if (!Arrays.equals(values, intArray.values))
return false;
return true;
public int hashCode()
return (values != null ? Arrays.hashCode(values) : 0);
public String toString()
StringBuilder builder = new StringBuilder();
builder.append("OneBasedIntArray{");
for (int i = 0; i < values.length; i++)
builder.append("(").append(i+1).append(",").append(values[i]).append(")");
builder.append('}');
return builder.toString();

Using Arrays in SELECT BULK queries

Dear All,
Can we use arrays in the SELECT Bulk operations.
Example:
SELECT empno BULK COLLECT INTO v_empno FROM EMP WHERE deptno = v_deptno(m);
Is there any way we can simulate this example.
Appreciate your response on this one.
Thanks,
Madhu K.

Yes you can. See the example.
SQL> set serverout on
SQL> declare
2 TYPE varr_typ IS VARRAY(2) OF NUMBER;
3 my_varr varr_typ:=varr_typ(20) ;
4 TYPE rec_typ IS RECORD (fname EMPLOYEES.First_Name%TYPE,
5                          lname EMPLOYEES.LAST_NAME%TYPE);
6 TYPE tmp_tbl IS TABLE OF rec_typ;
7 my_tbl tmp_tbl;
8 BEGIN
9 --my_varr(1):=20;
10 SELECT FIRST_NAME,LAST_NAME
11 BULK COLLECT INTO my_tbl
12 FROM EMPLOYEES
13 WHERE department_id=my_varr(1);
14
15 FOR i IN 1..my_tbl.COUNT LOOP
16    DBMS_OUTPUT.put_line(my_tbl(i).fname||' '||my_tbl(i).lname);
17    END LOOP;
18 END;
19 /
Michael Hartstein
Pat Fay
PL/SQL procedure successfully completed.

Error using Arrays.toString()

Hi there,
I am getting the following error using Arrays.toString on a String Array. 'toString() in java.lang.Object cannot be applied to (java.lang.String[]).
The line in question is at the bottom of the below code. It starts 'rtitem.appendText.....
import lotus.domino.*;
//import java.util.Arrays;
public class JavaAgent extends AgentBase {
     Database curDb;
     String[] dbList;
     public void NotesMain() {
     int dbcount = 0;
          try {
               Session session = getSession();
               AgentContext agentContext = session.getAgentContext();
               //get current database
               Database curDb = agentContext.getCurrentDatabase();
               //build a list of servers;
               String[] servers = {"Norwich002/Norwich/MoneyCentre","Norwich003/MoneyCentre","Norwich004/MoneyCentre","Norwich005/MoneyCentre","Norwich007/Norwich/MoneyCentre","Norwich008/Norwich/MoneyCentre","Norwich010/Norwich/MoneyCentre","Norwich020/Norwich/MoneyCentre","Norwich021/Norwich/MoneyCentre"};
               //loop through server list
               int arraylen = servers.length;
               for(int i=0;i <= arraylen;i++){
                    //create a notesdbdirectory collection for the current server iteration
                    DbDirectory dbdir = session.getDbDirectory(servers);
                    //get first database
                    Database db = dbdir.getFirstDatabase(DbDirectory.DATABASE);
                    //loop through databases in dbdir
                    while (db != null){
                         //add database details to our list
                         dbList[dbcount] = db.getTitle() + " - " + db.getFilePath();
                         dbcount++;
          } catch(Exception e) {
               e.printStackTrace();
          private boolean sendEmail(String subject){
               try{
                    Document mailDoc = curDb.createDocument();
                    mailDoc.replaceItemValue("SendTo","Hayleigh S Mann/Norwich/MoneyCentre");
                    mailDoc.replaceItemValue("Subject",subject);
                    RichTextItem rtitem = mailDoc.createRichTextItem("Body");
                    rtitem.appendText(java.util.Arrays.toString(dbList));
                    mailDoc.send();
                    return true;
               }catch(Exception e){
                    e.printStackTrace();
                    return false;

No, that doesn't make any sense. Arrays.toString can take any array as an arg: [http://java.sun.com/javase/6/docs/api/java/util/Arrays.html#toString(java.lang.Object[])]
import java.util.*;
public class A {
public static void main(String[] args) {
    String str = Arrays.toString(args);
    System.out.println(str);
:; java -cp . A abc 123 xxx
[abc, 123, xxx]

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