String Array Constant Addition

Is there an elegant way of marking the last element in a string array
constant? i.e. I take an Array constant, and add a simple string to it,
so that it becomes a String Array Constant. Now I add elements 1 and 2
and 3. But now I want to take element 3 out. If I just delete Element 3
contents from the string control, that is fine, but the # of Array
elements is still 3. It is just that the 3rd elelment is null. How can I
make the array length 2? Now I know that starting over is one option
(just creat a new array constant, and add the two elements) but what if
my array constant has 100 elements and I want to make it 99. I also
know that programatically I can remove these elelents, but I am taking
about in the programming of th
is constant. I must be over looking
something... Any ideas???
Sent via Deja.com http://www.deja.com/
Before you buy.

[email protected] wrote:
> Is there an elegant way of marking the last element in a string array
> constant? i.e. I take an Array constant, and add a simple string to it,
> so that it becomes a String Array Constant
Arrays must be all the same type. If the last element is a constant, all
elements are
> Now I add elements 1 and 2
> and 3. But now I want to take element 3 out. If I just delete Element 3
> contents from the string control, that is fine, but the # of Array
> elements is still 3. It is just that the 3rd elelment is null.
In a string, yes, Empty strings are essentially nulls.
> How can I
> make the array length 2? Now I know that starting over is one option
> (just creat a new array constant, and add the two elements) but what if
> my array cons
tant has 100 elements and I want to make it 99. I also
> know that programatically I can remove these elelents, but I am taking
> about in the programming of this constant. I must be over looking
> something... Any ideas???
This is one of my problems. It is easy to size an array up, but hard to size
down.
Of course you can resize at run time but the only way I know to do this
when editing is to start over.
Kevin Kent
Attachments:
Kevin.Kent.vcf ‏1 KB

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Creating string array constant

Hey, this is probably a stupid question but I am still trying to figure out everything in LabVIEW. Is there a way to create an array constant that holds strings? I know you can define an numerical array constant but can you also do one for strings, or do I just have to pass multiple text fields into a "build array" function.
Thanks,
Paul

Another tip:
Many times, you already have a function on the diagram that expects an array of strings (or whatever you specifically need), so the easiest is to right-click the connector and select "create constant". You will get an diagram constant of the default type for that input or output terminal.
LabVIEW Champion . Do more with less code and in less time .

Dynamic string array

I need to make a dynamic string array.
Deeper explanation:
I am trying to use a FOR loop to send a series of commands to an 8-channel device. Each channel requires 7 (actually, 1/2 need only 5, the other 1/2 need 7) strings to set them up and the entire sequence needs to be performed 8 times. I started a test .vi by simply using a constant array of type sting. I can sequentially pick each string and program my device perfectly. Now I'd like to do things like add the channel # somewhere in the mix, use variable values based on other controls in my .vi to set the parameters of the channel.
EXAMPLE:
The user sets certain values that determine delays and width for an 8-channel DDG (Digital Delay Generator, to some, a pulse generator). These values then need to be loaded into the DDG. The Strings will look something like this:
ULSE1TATE 1
ULSE1:WIDTH 0.009 000 *NOTEpaces behind decimal are for better viewability only
ULSE1ELAY 0.000 000
ULSE1YNC T0
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ULSE2TATE 1
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ULSE2ELAY 0.008 700
ULSE2YNC T0
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help?
PS - I am going to move the state, sync, and cmode to a common, initialize loop run only at program start, but I still need to use width, delay, and (variably) pcount and bcount.
PPS - I am trying to edit post to diable smilies. Commands should read:"colon, P (or D)" not ,
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Message Edited by Radiance_Jon on 07-16-2007 01:48 PM
Message Edited by Radiance_Jon on 07-16-2007 01:52 PM

smercurio_fc wrote:
Well, in my experience I have found that dealing with errors early on is the best course of action as it leads to less headaches down the road...
Auto-indexing is one of the more powerful features of LabVIEW. If you're familiar with text-based languages it's equivalent to the "foreach" statement. Basically it allows you to wire an array into a for-loop and the size of the array tells LabVIEW how many times the loop needs to execute. Inside the loop LabVIEW peels of each element of the array in order for each iteration of the loop. Looks like this:
My comment regarding not needing the sequence frame was related to using the error cluster since that wire would allow you enforce data dependency like so:
Note that the VISA resource wire does the same thing.
"I got a little aggravated at how NI seemed to handle the loops in those two frames concurrently". That's because LabVIEW is a data-flow language, and not a sequenced language like C or VB. In fact, that's one of the things that makes LabVIEW so powerful.
Message Edited by smercurio_fc on 07-16-2007 04:48 PM
MAN! I KNEW that!!!! GGRRRRR!!! That makes sense. Actually that's WHY I connected the error lines in the first place was to aide in flow control. OH!!! Still getting used to LabVIEW.
But I still have a question related to flow control. Check out the pic below. LabVIEW runs everything in a seemingly random order... well at least where it STARTS each chain of data. It obviously starts with the static constants or the earliest data in each chain, but I can't figure out how in the world it's deciding WHICH chain to start first. It kind of seems to go with the lower right and work it's way to top-left, but it doesn't exactly do that either. I dunno if it's worth you answering this concern or not, but if you got one for me I'd be much obliged.
I should take a LabVIEW class! Yeah right, as if they'd let me... R&D means I won't need it tomorrow ;( which stinks cause I'm liking LabVIEW the more I learn it. (I was not fond of it in the beginning, but that was my stubborness).
thanks again so much for all your help!!!!
Also, I am using all those strings to make my display appear as I want it to... I wonder if there is another way? I am aware of system labels, but I like the look of the recessed, grayed control boxes better.
Message Edited by Radiance_Jon on 07-16-2007 05:06 PM

Error : Array constants can only be used in initializers

Hello All,
I am using tableview model and declared two-dimensional array.
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String[][] retVal;
retVal = new String[20][20]
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for (int i = 0; i < list.size(); i++) {
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//                              for (int j = 0; j < i; j++) {
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Edited by: Risha on May 26, 2011 8:52 AM

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I've been annoyed by this in the past and a quick search did not yield any answer, so here is it:
Is there a good reason why an array constant on the BD cannot be looked at, in the sense that the array index is no clickable?
For instance, I am parsing a header using an array of strings and while I am debugging the process, I'd like to rapidly check what the index of entry "this" or "that" is so that I can put some conditional probe that will get me there quickly. The problem is, the array is too large to be seen at once on the diagram. Moreover, what I want to do is bring the item I am interested in to the top of the list so that I can check its index:
The problem is, once I step through the code, the array is "frozen" and I can't play with the index control.
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I can browse through cases of a structure or a sequence. Why not an array constant?
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You are specifically talking about run mode, right (in edit mode you can change the index).
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LabVIEW Champion . Do more with less code and in less time .

How to declare and initialize a STRING ARRAY (assign strings to array elements)

How to declare and initialize a STRING ARRAY (assign desired strings to elements of an array, for example "abc", "def", "ghi", "jkl", etc.) in LabVIEW? I saw a "string array" block in help, but could not find it in the function palette. Does a spreadsheet string have to be in a file (or can it be in a string constant block)? Thank you.

Hi,
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And of course you can combine all of these methods.
Good luck.
Oleg Chutko.

Problems with string array, please help!

I have a String array floor[][], it has 20 rows and columns
After I do some statement to modify it, I print this array
out in JTextArea, why the output be like this?
null* null....
null null...
null null...
How to correct it?

a turtle graphics applet:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class TG extends JApplet implements ActionListener {
private int x, y;
private int pendown, command, movement;
String direction, output, temp;
JLabel l1;
JTextField tf1;
JTextArea ta1;
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        direction = "u";
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        direction = "r";
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Problems with string arrays

Previous task was:
Write a class "QuestionAnalyser" which has a method "turnAnswerToScore". This method takes a String parameter and returns an int. The int returned depends upon the parameter:
parameter score
"A" 1
"B" 2
"C" 3
other 0
Alright, here's the recent task:
Write another method "turnAnswersToScore". This method takes an array of Strings as a parameter, works out the numerical score for each array entry, and adds the scores up, returning the total.
That's my code:
class QuestionAnalyser{
public static int Score;
public String[] Answer;
public static void main(String[] args) {}
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for (int i = 0; i < Answer.length;i++) {
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Score = Score + 1; }
else if (Answer[i].equals("B")) {
Score = Score + 2;}
else if (Answer[i].equals("C")) {
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else {
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return Score;
this is the error message I get:
The results of trying to compile your submission and run it against a set of test data was as follows:
----------Compilation output--------------------------------------
javac QATest2.java
QATest2.java:15: cannot resolve symbol
symbol : method turnAnswersToScore (java.lang.String[])
location: class QuestionAnalyser
if(qa.turnAnswersToScore(task)!=total){
^
What went wrong?
Suggestions would be greatly appreciated!

If I declare int score in the method i get this message
The results of trying to compile your submission and run it against a set of test data was as follows:
----------Compilation output--------------------------------------
javac QATest2.java
./QuestionAnalyser.java:20: variable score might not have been initialized
score++; }
^
./QuestionAnalyser.java:23: variable score might not have been initialized
score++;
^
./QuestionAnalyser.java:27: variable score might not have been initialized
score++;
^
./QuestionAnalyser.java:34: variable score might not have been initialized
return score;
^
4 errors
----------Sorry expected answer was-------------------------------
The method turnAnswersToScore is working OK - well done!
----------Your answer however was---------------------------------
Exception in thread "main" java.lang.NoClassDefFoundError: QuestionAnalyser
     at QATest2.main(QATest2.java:4)
This is the message I get from the submission page, but trying to compile it I get the same messages.
The code looks like this, then
class QuestionAnalyser{
String[] answer;
public static void main(String[] args) {}
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int score;
for (int i = 0; i < answer.length; i++) {
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score++; }
else if (answer[i].equals("B")) {
score++;
score++; }
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score++;
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score++; }
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The results of trying to compile your submission and run it against a set of test data was as follows:
----------Compilation output--------------------------------------
javac QATest2.java
----------Sorry expected answer was-------------------------------
The method turnAnswersToScore is working OK - well done!
----------Your answer however was---------------------------------
wrong answer in turnAnswersToScore for
BDCAADDCA
Alright, even university students need to sleep :-)
Good night.

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I have got a string array result[] .Now i wish to display the array items in selectOneListBox.Please help me?

Alance wrote:
Hi
I have got a string array result[] .Now i wish to display the array items in selectOneListBox.Please help me?I can only guess what your selectOneListBox is but if it is JComboBox - have you ever thought about reading the API ?
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Hi Hajra..
chec this link...
http://mail-archives.apache.org/mod_mbox/beehive-commits/200507.mbox/<[email protected]>
http://www.theserverside.com/tt/articles/article.tss?l=MonsonHaefel-Column2
Urs GS

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try
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