End a while loop

For this example:
int x = 1, y = 2;
while (x == 1)
if (y = 2)
y -= 1;
if (y = 1)
y -= 1;
}Is there a line I can put in the first if statement block to make the loop and and repeat? I'm having a problem with if statements that after one is true, it makes one following it also true. I only want one to be executed, so if I could make the while loop repeat after an if statement is true, I could fix that problem

I'm having a problem with if statements that after one is true, it makes one following it also true. I only want one to be executedOr perhaps "else if"
while(foo) {
if(cond1) {
cond2 = true;
} else if(cond2) {
cond1 = true;
}

Similar Messages

Ending a while loop inside a while loop

How do I make a while loop run as long as the while loop that contains it is running? I tried wiring both conditional terminals to a stop button in the outer loop, but that doesnt seem to work? Is there another way?
Thanks.

Hi Jasonalan,
I am not sure what you are trying to implement, but it is true that the loops are not terminating because of data dependency. The stop button in the outer loop will not be read until the inner loop terminates.
If you wish to terminate the two nested loops using a single stop button, you should read the stop button inside the inner loop and wire it to the conditional terminals in both the inner and outer loop. Again, there is no point in doing this unless you have some other logic along with the stop button to stop the loops. If only the stop button is being used to stop both the inner and outer loops, the outer loop will only execute once. In that case, you can just use a sequence structure followed by a single while loop.

While loop frustrations

I just don't understand this. I am trying to enter get the user to enter in one of these numbers:
0,0 - 0,1 - 0,2 - 1,0 - 1,1 - 1,2 - 2,0 - 2,1 - 2,2
But for the life of me, I don't understand why correct input still results in the error message. Here is the code I've set up:import java.io.*;
class Test2 {
     public static void main(String arg[])throws IOException{
          BufferedReader keyboard = new BufferedReader(
               new InputStreamReader(System.in));
          String str;
          int num = 0;
          while(num == 0){
               System.out.println("\nEnter 2 digits btwn 0-2 serarated by commma");
               str = keyboard.readLine();
               if(str.length() < 3){
                   System.out.println("Error! Please try again: ");
                   str = keyboard.readLine(); }
               else if(str.charAt(0) != '0'){
                    System.out.println("Error! Please try again: ");
                    str = keyboard.readLine();}
               else if(str.charAt(0) != '1'){
                    System.out.println("Error! Please try again: ");
                    str = keyboard.readLine();}
               else if(str.charAt(0) != '2'){
                    System.out.println("Error! Please try again: ");
                    str = keyboard.readLine();}
               else if(str.charAt(2) != '0'){
                    System.out.println("Error! Please try again: ");
                    str = keyboard.readLine();}
               else if(str.charAt(2) != '1'){
                    System.out.println("Error! Please try again: ");
                    str = keyboard.readLine();}
               else if(str.charAt(2) != '2'){
                    System.out.println("Error! Please try again: ");
                    str = keyboard.readLine();}
               else if(str.charAt(1) != ','){
                    System.out.println("Error! Please try again: ");
                    str = keyboard.readLine();}
               else
                    num = 1;
          }//end of while loop
          System.out.println("Thank you");
     }//End of main
}//End of class

Try this code:
public class Test
public static void main(String[] argv)
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String line = null;
    System.out.println("\nEnter 2 digits btwn 0-2 serarated by commma > ");
    while(true)
      try { line = br.readLine(); }
      catch(IOException iox) { iox.printStackTrace(); System.exit(-1); }
      if(line != null && line.length() == 3 && line.charAt(1) == ',' &&
         line.charAt(0) >= '0' && line.charAt(0) <= '2' &&
         line.charAt(2) >= '0' && line.charAt(2) <= '2')
          System.out.println("Input OK!"); break;
      else System.out.println("Bad input! Try again...");
}

Why doesn't my while loop end?

* Main method
public static void main(String args[])
Scanner sc = new Scanner(System.in);
//get input
String hexa = "nothing";
while (hexa != "q")
System.out.println("");
System.out.println("Please enter a hexadecimal to convert to binary, enter q to quit");
hexa = sc.next();
int hexlength = hexa.length();
for (int i = 0; i < hexlength; i ++)
char hexadec = hexa.charAt(i);
//send to subprogram
findBinary(hexadec, hexlength);
why doesn't my while loop end when i enter q?

The equals method returns a boolean (true/false). So you simply negate the returned value.
if( ! methodCall()) {
}

Ending Java War game with while loop

How would i go about ending a java war game witha while loop. I want the program to run until all of the values of one of the arrays of one of the players split decks has all null values.

GameObject[] theArrayInQuestion;
// populate array somehow or other
void methodWithLoop() {
   while(arrayNotNull(theArrayInQuestion)) {
   // do stuff
boolean arrayNotNull(Object[] array) {
int len = array.length;
for(int i = 0; i < len; i++) {
    if ( array[i] != null ) {
      return true;
return false
}

Allow state machine while loop to end only in 1 of the states?

What is the best way to ensure that the while loop that surronds state machine case structure only ends in a certain one of the states?

I have solved the problem of having the VI not stopping (apparently it was due to an event structure). However, now I have another slight problem. I need the state machine to terminate on either of two conditions:
1) If a stop button is pressed
OR
2) if the end of the sequence is reached.
As I have implemented it so far the VI terminates because of the second condition and does not allow me to terminate it by pressing a 'Stop' boolean button. I know that this might be a bit fundamental and simple but I'm new with state machines on labview.
Thanks.
Attachments:
State machine.vi ‏21 KB

Do while loop doesn't end

my do while loop does not exits can help?
do{
               a++;
               System.out.print("Enter account number "+a+" (Press ENTER to exit) : ");
               account=CspInput.readString();
               item[a-1] = account;
               System.out.print("Enter credit card expenses for "+account+" : $");
               price=CspInput.readDouble();
               amount[a-1]= price;
               System.out.println("");
               if((a-1)==0)
                    summaryByMonth[i-1]=item[a-1]+"\t\t"+fmt.format(amount[a-1])+"\n";
               else
                    summaryByMonth[i-1]+=item[a-1]+"\t\t"+fmt.format(amount[a-1])+"\n";
               totalAmount[i-1]+=amount[a-1];
          }while(account != null && account != " ");

si0ngch33 wrote:
my do while loop does not exits can help?
do{
               a++;
               System.out.print("Enter account number "+a+" (Press ENTER to exit) : ");
               account=CspInput.readString();
               item[a-1] = account;
               System.out.print("Enter credit card expenses for "+account+" : $");
               price=CspInput.readDouble();
               amount[a-1]= price;
               System.out.println("");
               if((a-1)==0)
                    summaryByMonth[i-1]=item[a-1]+"\t\t"+fmt.format(amount[a-1])+"\n";
               else
                    summaryByMonth[i-1]+=item[a-1]+"\t\t"+fmt.format(amount[a-1])+"\n";
               totalAmount[i-1]+=amount[a-1];
          }while(account != null && account != " ");Either use a debugger or put some print statements in the loop to see what the actual value of account is:
Example:
do{
    //... bunch of code
    System.out.println("DEBUGGING - account is '"+account+"'");
}while(account != null && !account.equals(" "));

Getting data from a while loop while running.

Hello,
I did a program that call a sub-VI which is doing experiment and have its own timer.
The sub-VI is a while loop and the stop condition of this loop is the elapsed time of my timer.
What I want to do is to be able to get the elapsed time in my main program during the execution of the sub-VI (every second of its execution).
First I assign the elapsed time in the sub-VI as an output of it. But of course the elapsed time is only updated in the main VI only when the while loop has finished. So I tried several solution: property nodes, local variable, global variable.
When I am using global variable, I can see the elapsed time being updated during the while loop when I open the global variable VI. But the result is always the same: in the main VI the elapsed time is only updated at the end of the while loop.
I think that is the global variable is updated every time, I could be able to get its data to my main VI?
Does anyone have an idea?
Thank you,
Meach

I tried using shared variable and reference without succes.
I will keep searching.
I enclose my VI that I simplify the most but with still keeping the shape of my real program. If you can take a look I will really appreciate.
The goal is on the top-level VI to be able to see the updating data time in real time.
Thanks,
Meach
Message Edited by Meach on 07-23-2008 04:13 PM
Message Edited by Meach on 07-23-2008 04:14 PM
Attachments:
Elapsed Time.zip ‏25 KB

How to out from infinite while loop in sub VI

Dear Sir,
how to out from infinite while loop in sub VI from main VI
attached photo for solution but I can't understand it and i can't find the function in photo
please help
Attachments:
stop_subVI_frm_main.JPG ‏36 KB

Asking how to get out of an infinite loop is like asking how to find the end of a circle. I'm not trying to be sarcastic but by definition, if there is a way out of the loop, then it is not infinite. I think what you are asking is how to avoid creating an infinite loop. Is there something about the suggestions you have been given that you do not like? My favorite suggestion is the notifier but maybe you just need an example. Turn on context help and read about the notifier functions in the code below.
This is your top level VI
And this is your subVI
If this seems too complex then a global variable will work too. But what seems simpler can cause much more complex bugs. You can code fast and spend lots of time debugging or you can code slow and spend less time debugging. Personally I perfer writing productive code than looking for bugs any time.
=====================
LabVIEW 2012

What happens to the while loop iteration counter if it runs unchecked?

I want to use the iteration counter to initialise a value on the first loop of a while statement. ie i = 0, x = 100. Fine. The application I am building will be left to run for weeks or months on end without stopping (hopefully :¬)). What happens to the iteration counter in this situation? Does it reset to 0 or what? I don't want it reinitialising any values while the loop is running other than when it starts.
I set up a while loop to try to figure out what happens and the iteration counter stops at 2147483648 which is 2^31 - 1.
Any help would be appreciated,
Thanks,
Niel.

It might be something you already looked at, but perhaps it's an option to perform the initialization outside (before) the while loop. That way it will be initialized correctly only once, no matter what the iteration counter does.
Of course if you need the counter for other purposes than initialization you might have the same problem...
Note that a lot of the timer functions also overflow after a certain time (I believe 24 or 48 days?) so be careful running very long loops (but you already knew that probably).

What's wrong with this while loop?

Hi, folks. for the code fragment blow, resultSetArray holds two objects of type ResultSet. From those println statement, i can see the whole while loop(the most outter one) process goes alrite the first time right from begining to the end. However, when variable j increases from 0 to 1, the code stops executing at the the line while(rs.next). I just couldnt figure out what causes the problem while i've been fighting with it for several hours. Could someone plz throw me some lights? With your help, i could possibly go to bed before sun rises...
        while(j<resultSetArray.length)
          //for(int j=0; j<resultSetArray.length; j++)
System.out.println("show me j is called twice " + j);
               ResultSet rs = resultSetArray[j];
System.out.println("the converting rs object is called twice and it is not null " + rs);
              int numWantedColumns = wantedColumnNames.size();
              //if it's about go or single trip
              if(j==0 && rs != null)
                  go = new Element("Go");
                   //go.setText("go");
                   //result.addContent(go);
              //if it's about return trip
              else if(j==1 && rs != null)
                  back = new Element("Back");
                   //back.setText("back");
                   //result.addContent(back);
              if(rs!= null)
System.out.println("this hell is called twice coz it's not null");
               while(rs.next())
System.out.println("what about here?");
                    Element flightInfo = new Element("FlightInfo");
     System.out.println("while rs.next() is called");
                    for (int i = 0; i < numWantedColumns; i++)
                       String columnName   = (String)wantedColumnNames.get(i);
     System.out.println("column name is " + columnName);
                       String value = rs.getString(columnName);
      System.out.println("column value is " + value);
                       flightInfo.addContent(new Element(columnName).setText(value));
                    if(j==0)
                       go.addContent(flightInfo);
                    else if(j==1)
                         back.addContent(flightInfo);
               else if(rs == null)
                    break;
               j++;
         }

i've got the problem sort out, eventually. there was actually nothing wrong with the while loop. it was caused by a typo in databse, instead of having Brisbane, i typed Bisbane. The single letter r cost me more than 6 hours to figure it out. it was such a painful feeling while i realized i made a such stupid mistake.
by the way, as jnw777 mentioned, output rs.next() info instead of the test line. i did try it, however i didnt realize even System.out.println(rs.next()) would cause the cursor move down one row from its current position. so, plus the original while(rs.next()) statement, it was moving the cursor two rows down at a time! And i just couldnt think of this caused me the fact i was only getting the even number row of the ResultSet while i was sniffing the bug from a class with 700+ lines of code. I was so excited and just couldnt stop yelling at the moment i got over it! That was a damn execiting moment...
now, i am wondering if anyone in this wonderland would like to share his/her stories.

Is there a way to run a For Loop independently within a While Loop in LabVIEW 2013?

In my program I would like to run a For loop inside of a While loop, and have them run independently, at their own execution rates. As a test, I wrote a simple VI with a While loop with 1 second timing, and into this I inserted a For loop with 3 second timing. I created indicators for both iteration terminals. Upon running the VI, I found the While loop waits for the For loop to run N times before the While loop executes again. I also found that sometimes the first iteration of the For loop will end at 1 second rather than 3 seconds, and the STOP button to terminate execution of the While loop does not always work.
Solved!
Go to Solution.

ksinks wrote:
Thanks, how would you synchronize the loops? I have gone through the Getting Started exercises and manual.
Why would synchronization matter? Did you want them to run independantly at their own speed or not?
Regardless, there's a synchronization pallette with functions for this, as Occurance.
Other solutions include a common loop counter and a case structure executing every X'th iteration, or having the faster loop send a queue or event every X'th loop that controls the slower loop.
/Y
LabVIEW 8.2 - 2014
"Only dead fish swim downstream" - "My life for Kudos!" - "Dumb people repeat old mistakes - smart ones create new ones."
G# - Free award winning reference based OOP for LV

How can i get the while loop to enter a different loop beside the first one

I can't seem to figure out how to change the value to enter into one of the other while statements in the script. I am new to this and can't seem to find anything how to enter in the information to be able to go to different while statements and then run
what is located in that statement.
The script is supposed to let me choose between TC, MonsterLock, and Cyc and then jump to the while statement that is associated with one of them and then run what ever is located in that block. All i am getting is a infinite loop and it never sees the other
while loops. I have 3 set up the go along with the first statement but no matter what i type in for them it always looks at the first while statement and stays there.
Can someone please help me with having it do what i stated earlier.
write-host "This script sets up DATABASE Staging"
$ProductionDistro = Read-Host -Prompt "Which production do you `enter code here`want to run?(TC/MonsterLock/Cyc)"
While($ProductionDistro -notmatch "(TC|MonsterLock|Cyc)"){
write-host "You have entered an error" -ForegroundColor Red
write-host "You must type TC or MonsterLock or Cyc"
write-host "you typed $ProductionDistro"
write-host "This script sets up DATABASE Staging"
$ProductionDistro = Read-Host -Prompt "Which production do you `enter code here`want to run?(TC/MonsterLock/Cyc)"
while($ProductionDistro -match $TC) {
write-host "Sets up location you want to run staging"
$ElementDistro = Read-Host -Prompt "Which Element do you want to run? (DATABASE1/DATABASE2/DATABASE3/DATABASE4/ALL)"
While($ElementDistro -notmatch "(DATABASE1|DATABASE2|DATABASE3|DATABASE4|ALL)") {
write-host "you have enterd an error" -ForegroundColor Red
write-host "You must type DATABASE1 or DATABASE2 or DATABASE3 or DATABASE4 or ALL"
write-host "you typed $ElementDistro"
write-host "set location you want to run staging"
$ElementDistro = Read-Host -Prompt "Which Element do you want to run? (DATABASE1/DATABASE2/DATABASE3/DATABASE4/ALL)"
While($PrductionDistro -match $MonsterLock){
write-host "Sets up location you want to run staging"
$ElementDistro = Read-Host -Prompt "Which Element do you want to run? (DATABASE1/DATABASE2/DATABASE3/DATABASE4/ALL)"
While($ElementDistro -notmatch "(DATABASE1|DATABASE2|DATABASE3|DATABASE4|ALL)") {
write-host "you have enterd an error" -ForegroundColor Red
write-host "You must type DATABASE1 or DATABASE2 or DATABASE3 or DATABASE4 or ALL"
write-host "you typed $ElementDistro"
write-host "set location you want to run staging"
$ElementDistro = Read-Host -Prompt "Which Element do you want to run? (DATABASE1/DATABASE2/DATABASE3/DATABASE4/ALL)"
while( $ElementDistro -match $DATABASE1 ){
function Execute-MySqlcommand {param( [string]$Server, #the host of the SQL server
[string]$Database1, #the name of the database
[System.Data.MySqlclient.MySqlcommand]$Command) #the command to execute (name of stored command)
$mysqlConnection = new-object System.Data.MySqlclient.MySqlConnection
$MySqlConnection.ConnectionString = "DROP_VIEW DATABASE.BTXADDR;DROP_VIEW DATABASE.BTXSUPB;CREATE_VIEW DATABASE.BTXADDR FOR DATABASE1.DATABASE1S2.BTXADDR;CREATE_VIEW DATABASE.BTXSUPB FOR DATABASE1.DATABASE1S3.BTXSUPB"
$MySqlConnection.ConnectionString = "TRUNCATE TABLE DATABASE1.DATABASE1S2.BTXADDR;TRUNCATE TABLE DATABASE1.DATABASE1S3.BTXSUPB; INSERT INTO DATABASE1.DATABASE1S3.BTXSUPB SELECT * FROM DATABASE1.DATABASE1S2.BTXSUPB; select count(*) from DATABASE1.DATABASE.BTXADDR; select count(*) from DATABASE1S.DATABASE.BTXADDR; select count(*) from DATABASE1.DATABASE.BTXSURB; select count(*) from DATABASE1S.DATABASE.BTXSUPB;"
$Command.CommandType = 1 # 1 is the 'Text' command type
$Command.Connection = $mysqlConnection
$mysqlConnection.Open()
$Result = $Command.ExecuteNonQuery()
$mysqlConnection.Close()
if ($Result -gt 0) {return $True} else {return $False}
function Execute-MySQLCommand {param( [string]$Server, #the host name of the SQL server
[string]$DATABASE1, #the name of the database
[System.Data.SqlClient.SqlCommand]$Command) #the command to execute (name of stored procedure)
$sqlConnection = New-Object System.Data.SqlClient.SqlConnection
$sqlConnection.ConnectionString = "DATABASE_CONNECT_STRING=DSN=DATABASE1;Description=DATABASE1;Trusted_Connection=Yes;WSID=Server;DATABASE=DATABASE1;DATASET=DEFAULT"
$Command.CommandType = 1 # 1 is the 'Text' command type
$Command.Connection = $sqlConnection
$sqlConnection.Open()
$Result = $Command.ExecuteNonQuery()
$sqlConnection.Close()
if ($Result -gt 0) {return $TRUE} else {return $FALSE}
function Copy-File {
#.Synopsis
# Copies all files and folders in $source folder to $destination folder, but with .copy inserted before the extension if the file already exists
param}($DATABASE0980453.pkg,"d/DATABASE1/code_stg")
# create destination if it's not there ...
#mkdir $destination -force -erroraction SilentlyContinue
foreach($original in ls $source -recurse) {
$result = $original.FullName.Replace($source,$destination)
while(test-path $result -type leaf){ $result = [IO.Path]::ChangeExtension($result,"copy$([IO.Path]::GetExtension($result))") }
if($original.PSIsContainer) {
# mkdir $result -ErrorAction SilentlyContinue
# } else {
copy $original.FullName -destination $result
cd /d/DATABASE1/code_stg
install ../DATABASE0980453.pkg
while($ElementDistro -match $DATABASE2 ) {
function execute-MySqlcommand {param( [string]$Server, #the host of the SQL server
[string]$DataBase2, #the name of the database
[System.Data.MySqlclient.MySqlcommand]$Command) #the command to execute (name of stored command)
$mysqlConnection = new-object System.Data.MySqlclient.MySqlConnection
$MySqlConnection.ConnectionString = "DROP_VIEW DATABASE.BTXADDR;DROP_VIEW DATABASE.BTXSUPB;CREATE_VIEW DATABASE.BTXADDR FOR DATABASE2.DATABASE2MS2.BTXADDR;CREATE_VIEW DATABASE.BTXSUPB FOR DATABASE2.DATABASE2S3.BTXSUPB"
$MySqlConnection.ConnectionString = "TRUNCATE TABLE DATABASE2.DATABASE2S2.BTXADDR;TRUNCATE TABLE DATABASE2.DATABASE2S3.BTXSUPB; INSERT INTO DATABASE2.DATABASE2S3.BTXSUPB SELECT * FROM DATABASE2.DATABASE2S2.BTXSUPB; select count(*) from DATABASE2.DATABASE.BTXADDR; select count(*) from DATABASE2S.DATABASE.BTXADDR; select count(*) from DATABASE2.DATABASE.BTXSURB; select count(*) from DATABASE2S.DATABASE.BTXSUPB;"
$Command.CommandType = 1 # 1 is the 'Text' command type
$Command.Connection = $mysqlConnection
$mysqlConnection.Open()
$Result = $Command.ExecuteNonQuery()
$mysqlConnection.Close()
if ($Result -gt 0) {return $True} else {return $False}
function Execute-MySQLCommand {param( [string]$Server, #the host name of the SQL server
[string]$DATABASE2, #the name of the database
[System.Data.SqlClient.SqlCommand]$Command) #the command to execute (name of stored procedure)
$sqlConnection = New-Object System.Data.SqlClient.SqlConnection
$sqlConnection.ConnectionString = "DATABASE_CONNECT_STRING=DSN=DATABASE2; Description=DATABASE2; Trusted_Connection=Yes;WSID=Server;DATABASE=DATABASE2;"
$Command.CommandType = 1 # 1 is the 'Text' command type
$Command.Connection = $sqlConnection
$sqlConnection.Open()
$Result = $Command.ExecuteNonQuery()
$sqlConnection.Close()
if ($Result -gt 0) {return $TRUE} else {return $FALSE}
function Copy-File {
#.Synopsis
# Copies all files and folders in $source folder to $destination folder, but with .copy inserted before the extension if the file already exists
param}($DATABASE0980453.pkg,"d/DATABASE2/code_stg")
# create destination if it's not there ...
#mkdir $destination -force -erroraction SilentlyContinue
foreach($original in ls $source -recurse) {
$result = $original.FullName.Replace($source,$destination)
while(test-path $result -type leaf){ $result = [IO.Path]::ChangeExtension($result,"copy$([IO.Path]::GetExtension($result))") }
if($original.PSIsContainer) {
# mkdir $result -ErrorAction SilentlyContinue
# } else {
copy $original.FullName -destination $result
cd /d/DATABASE2/code_stg
install ../DATABASE0980453.pkg
While( $ElementDistro -match $DATABASE3 ) {
function Execute-MySqlcommand {param( [string]$Server, #the host of the SQL server
[string]$DATABASE3, #the name of the database
[System.Data.MySqlclient.MySqlcommand]$Command) #the command to execute (name of stored command)
$mysqlConnection = new-object System.Data.MySqlclient.MySqlConnection
$MySqlConnection.ConnectionString = "DROP_VIEW DATABASE.BTXADDR;DROP_VIEW DATABASE.BTXSUPB;CREATE_VIEW DATABASE.BTXADDR FOR DATABASE3.DATABASE3S2.BTXADDR;CREATE_VIEW DATABASE.BTXSUPB FOR DATABASE3.DATABASE3S3.BTXSUPB"
$MySqlConnection.ConnectionString = "TRUNCATE TABLE DATABASE3.DATABASE3S2.BTXADDR;TRUNCATE TABLE DATABASE3.DATABASE3S3.BTXSUPB; INSERT INTO DATABASE3.DATABASE3S3.BTXSUPB SELECT * FROM DATABASE3.DATABASE3S2.BTXSUPB; select count(*) from DATABASE3.DATABASE.BTXADDR; select count(*) from DATABASE3S.DATABASE.BTXADDR; select count(*) from DATABASE3.DATABASE.BTXSURB; select count(*) from DATABASE3S.DATABASE.BTXSUPB;"
$Command.CommandType = 1 # 1 is the 'Text' command type
$Command.Connection = $mysqlConnection
$mysqlConnection.Open()
$Result = $Command.ExecuteNonQuery()
$mysqlConnection.Close()
if ($Result -gt 0) {return $True} else {return $False}
function Execute-MySQLCommand {param( [string]$Server, #the host name of the SQL server
[string]$DATABASE3, #the name of the database
[System.Data.SqlClient.SqlCommand]$Command) #the command to execute (name of stored procedure)
$sqlConnection = New-Object System.Data.SqlClient.SqlConnection
$sqlConnection.ConnectionString = "DATABASE_CONNECT_STRING=DSN=DATABASE3;Description=DATABASE3;Trusted_Connection=Yes;WSID=Server;DATABASE=DATABASE3;"
$Command.CommandType = 1 # 1 is the 'Text' command type
$Command.Connection = $sqlConnection
$sqlConnection.Open()
$Result = $Command.ExecuteNonQuery()
$sqlConnection.Close()
if ($Result -gt 0) {return $TRUE} else {return $FALSE}
cd /d/DATABASE3/code_stg
install ../DATABASE0980453.pkg
function Copy-File {
#.Synopsis
# Copies all files and folders in $source folder to $destination folder, but with .copy inserted before the extension if the file already exists
param}($DATABASE0980453.pkg,"d/DATABASE3/code_stg")
# create destination if it's not there ...
#mkdir $destination -force -erroraction SilentlyContinue
foreach($original in ls $source -recurse) {
$result = $original.FullName.Replace($source,$destination)
while(test-path $result -type leaf){ $result = [IO.Path]::ChangeExtension($result,"copy$([IO.Path]::GetExtension($result))") }
if($original.PSIsContainer) {
# mkdir $result -ErrorAction SilentlyContinue
# } else {
copy $original.FullName -destination $result
While($ElementDistro -match $DATABASE4 ) {
function Execute-MySqlcommand {param( [string]$Server, #the host of the SQL server
[string]$DATABASE4, #the name of the database
[System.Data.MySqlclient.MySqlcommand]$Command) #the command to execute (name of stored command)
$mysqlConnection = new-object System.Data.MySqlclient.MySqlConnection
$MySqlConnection.ConnectionString = "DROP_VIEW DATABASE.BTXADDR;DROP_VIEW DATABASE.BTXSUPB;CREATE_VIEW DATABASE.BTXADDR FOR DATABASE4.DATABASE42.BTXADDR;CREATE_VIEW DATABASE.BTXSUPB FOR DATABASE4.DATABASE4S3.BTXSUPB"
$MySqlConnection.ConnectionString = "TRUNCATE TABLE DATABASE4.DATABASE4S2.BTXADDR;TRUNCATE TABLE DATABASE4.DATABASE4S3.BTXSUPB; INSERT INTO DATABASE4.DATABASE4S3.BTXSUPB SELECT * FROM DATABASE4.DATABASE4S2.BTXSUPB; select count(*) from DATABASE4.DATABASE.BTXADDR; select count(*) from DATABASE4S.DATABASE.BTXADDR; select count(*) from DATABASE4.DATABASE.BTXSURB; select count(*) from DATABASE4S.DATABASE.BTXSUPB;"
$Command.CommandType = 1 # 1 is the 'Text' command type
$Command.Connection = $mysqlConnection
$mysqlConnection.Open()
$Result = $Command.ExecuteNonQuery()
$mysqlConnection.Close()
if ($Result -gt 0) {return $True} else {return $False}
function Execute-MySQLCommand {param( [string]$Server, #the host name of the SQL server
[string]$DATABASE4, #the name of the database
[System.Data.SqlClient.SqlCommand]$Command) #the command to execute (name of stored procedure)
$sqlConnection = New-Object System.Data.SqlClient.SqlConnection
$sqlConnection.ConnectionString = "DATABASE_CONNECT_STRING=DSN=DATABASE4;Description=DATABASE4;Trusted_Connection=Yes;WSID=Server;DATABASE=TF90PVS;"
$Command.CommandType = 1 # 1 is the 'Text' command type
$Command.Connection = $sqlConnection
$sqlConnection.Open()
$Result = $Command.ExecuteNonQuery()
$sqlConnection.Close()
if ($Result -gt 0) {return $TRUE} else {return $FALSE}
function Copy-File {
#.Synopsis
# Copies all files and folders in $source folder to $destination folder, but with .copy inserted before the extension if the file already exists
param}($DATABASE0980453.pkg,,"d/DATABASE4/code_stg")
# create destination if it's not there ...
#mkdir $destination -force -erroraction SilentlyContinue
foreach($original in ls $source -recurse) {
$result = $original.FullName.Replace($source,$destination)
while(test-path $result -type leaf){ $result = [IO.Path]::ChangeExtension($result,"copy$([IO.Path]::GetExtension($result))") }
if($original.PSIsContainer) {
# mkdir $result -ErrorAction SilentlyContinue
# } else {
copy $original.FullName -destination $result
cd /d/DATABASE4/code_st
install ../DATABASE0980453.pkg
While($ElementDistro -match $ALL ){
function Execute-MySQLCommand {param( [string]$Server, #the host name of the SQL server
[string]$DATABASE1,$DATABASE2,$DATABASE3,$DATABASE4, #the name of the database
[System.Data.SqlClient.SqlCommand]$Command) #the command to execute (name of stored procedure)
$sqlConnection = New-Object System.Data.SqlClient.SqlConnection
$sqlConnection.ConnectionString = "(DATABASE_CONNECT_STRING=DSN=DATABASE1;Description=DATABASE1;Trusted_Connection=Yes;WSID=Server;DATABASE=DATABASE1;DATASET=DEFAULT;),(DATABASE_CONNECT_STRING=DSN=DATABASE2; Description=DATABASE2; Trusted_Connection=Yes;WSID=Server;DATABASE=DATABASE2;),(DATABASE_CONNECT_STRING=DSN=DATABASE3;Description=DATABASE3;Trusted_Connection=Yes;WSID=Server;DATABASE=DATABASE3;),(DATABASE_CONNECT_STRING=DSN=DATABASE4;Description=DATABASE4;Trusted_Connection=Yes;WSID=Server;DATABASE=TF90PVS;)"
$Command.CommandType = 1 # 1 is the 'Text' command type
$Command.Connection = $sqlConnection
$sqlConnection.Open()
$Result = $Command.ExecuteNonQuery()
$sqlConnection.Close()
if ($Result -gt 0) {return $TRUE} else {return $FALSE}
install ../DATABASE0980453.pkg
While($ProductionDistro -match $Cyc) {
write-host "Sets up location you want to run staging"
$ElementDistro = Read-Host -Prompt "Which Element do you want to run? (DATABASE1/DATABASE2/DATABASE3/DATABASE4/ALL)"
While($ElementDistro -notmatch "(DATABASE1|DATABASE2|DATABASE3|DATABASE4|ALL)") {
write-host "you have enterd an error" -ForgroundColor Red
write-host "You must type DATABASE1 or DATABASE2 or DATABASE3 or DATABASE4 or ALL"
write-host "you typed $ElementDistro"
write-host "set location you want to run staging"
$ElementDistro = Read-Host -Prompt "Which Element do you want to run? (DATABASE1/DATABASE2/DATABASE3/DATABASE4/ALL)"

OK, so you've got a reasonable input loop early on:
write-host "This script sets up DATABASE Staging"
$ProductionDistro = Read-Host -Prompt "Which production do you `enter code here`want to run?(TC/MonsterLock/Cyc)"
While($ProductionDistro -notmatch "^(TC|MonsterLock|Cyc)$"){
write-host "You have entered an error" -ForegroundColor Red
write-host "You must type TC or MonsterLock or Cyc"
write-host "you typed $ProductionDistro"
write-host "This script sets up DATABASE Staging"
$ProductionDistro = Read-Host -Prompt "Which production do you `enter code here`want to run?(TC/MonsterLock/Cyc)"
I've only added two things to that code: a ^ and $ at the beginning and end of your regex pattern. As originally written, it would have successfully matched any string containing TC, MonsterLock or Cyc (such as "bogusTCwhatever", etc).
Now, instead of a bunch of extra While loops based on $ProductionDistro, what you need is some conditionals (either a Switch statement, or some If/ElseIf). For example:
switch ($ProductionDistro)
'TC'
# Do TC Stuff
break
'MonsterLock'
# Do MonsterLock Stuff
break
'Cyc'
# Do Cyc stuff
break

How to use Boolean values from 2 different sources to stop a while loop?

I am working on a program for homework that states E5.4) Using a single Whil eLoop, construct a VI that executes a loop N times or until the user presses a stop button. Be sure to include the Time Delay Exress Vi so the user has time to press the stop botton.
I am doing this right now but it seems as though I can only connect one thing to the stop sign on th while loop. It won't let me connect a comparision of N and the iterations as well as the stop button to the stop sign on the while loop. So how would I be able to structure it so that it stops if it receives a true Boolean value from either of the 2 sources (whichever comes first)?
Basically, I cannot wire the output of the comparison of N and iterations as well as the stop button to the stop button on the whlie loop to end it. Is there a solution?
Thanks!
Solved!
Go to Solution.

Rajster16 wrote:
Using a single Whil eLoop, construct a VI that executes a loop N times or until the user presses a stop button.
Look in the boolean palette for something similar to the word hightlighted in red above.
LabVIEW Champion . Do more with less code and in less time .

Iteration Speed issue when Indexing 3D array wried to a while-loop

Brief Description of my Program:
I am working on the real-time signal generation by using LabView and DAQmx (PCI-6110 card). My vi reads the big data file (typically 8MB txt file containing about 400,000 samples (complex double precision). Then, the signal is pre-processed and I end up with a huge 3D array to feed while-loop (typically 3D array dimension is N x 7 x M where N & M >> 7). Inside the loop, that 3D array is indexed and processed before the results are written to the DAQmx outputs. I have a speed issue when indexing the large 3D array (i.e, 3D array having a large sub-array size). My while-loop could not run fast enough to top-up the DAQmx AO buffer (at the output rate of 96kHz). It could run faster only if I use smaller 3D array (i.e, smaller-sized sub-arrays). I do not quite understand why the size of 3D sub-array affects the rate of looping although I am indexing same sub-array size at each iteration. I really appreciate your comments, advices and helps.
I include my 3D array format as a picture below.
Question on LabView:
How does indexing an 3D array which wires to the while-loop affect the speed of the loop iteration? I found that large dimension of sub-arrays in the 3D array slows down the iteration speed by comparing to indexing the same size of sub-array from smaller-sized sub-arrays of the 3D array to perform signal processing inside the while-loop. Why? Is there any other way of designing LabView Program to improve speed of iteration?
attachment:

Thank you all for your prompt replies and your interests. I am sorry about my attachment. But, I have now attached a jpg format image file as you suggested.
I had read the few papers on large data handling such as "LabVIEW Performance and Memory Management". Thus, I had already tried to avoid making unnecessary copies of data and growing arrays in my while-loop. I am not an expert on LabView, so I am not sure if the issues I have are just LabView fundamental limitations or there are any other ways to improve the iteration speed without reducing the input file size and DAQ output rate.
As you request, I also attach my top-level vi showing essential sections such as while-loop and its indexing. The attached file is as an image jpg format because the actual vi including Sub-VIs are as big as 3MB in total. I hope my attachment would be useful for anyone who would like to reply my question. If anyone would like to see my whole vi & llb files, I would be interesting to send it to you by an e-mail privately and thus please provide your e-mail address.
The dimension of my 3D array is N x 7 x M (Page x Row x Column), where N represents number of pages in 3D array, and M represents the size of 1D array. The file I am currently using forms 3D array of N = 28, & M = 10,731. Refering to the top-level vi picture I attached, my while-loop indexes each page per iteration and wrap-around. The sub-VI called "channel" inside the while-loop will further index its input (2D array) into seven of 1D arrays for other signal processsing. The output from that "channel" sub-VI is the superposition of those seven arrays. I hope my explaination is clear.
Attachement: 3Darray.jpg and MyVi.jpg
Kind Regards,
Shein
Attachments:
3Darray.jpg ‏30 KB
MyVI.jpg ‏87 KB

End a while loop

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