Variable size 2D arrays

Good afternoon everyone.
I need to allocate array of buffers (arrays). Each buffer would be different size. When implementing this in C/C++ it would look like an array of pointers where each pointer would point to a specific array. Each array could be NULL terminated to know exactly where it ends.
How can I implement this in LabVIEW? Two dimentional arrays are an option, but would waste a lot of memory since the second dimmention would have to be the dimmention of the largest buffer.
Please help.
Thank you in advance,
BorisMoto

Well, you can use an array of clusters, where each cluster holds a 1D array. I think this would take less memory but it would definitly be more complex becuase you're adding the cluster operations. To do this, create a 1D array, drag it into a cluster and drag that cluster into another array. It's possible that this isn't any better. You can measure the performance difference by using VI profiling (Tools>>Advanced) and by using timing (the time the VI stopped minus the time it started).
Try to take over the world!

Similar Messages

Variable size array in a FlowPane

If i have an array of variable size (for example a array of cards).
How can i build something to show the elements(in a FlowPane for example) and each of them having its own controller (fxml + controller for each card), so the container (flow pane) of the elements (cards) can have it's elements swaped, removed or added new ones?
Controller:
public class HandController extends FlowPane implements Initializable{
    @Override public void initialize(URL arg0, ResourceBundle arg1){
    public void setHand(ArrayList<Cards> Hand){
        //this would work if the hand were static
        for(int i = 0; i < Hand.size(); ++i){
            FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("CardView.fxml"));
            CardController controller = new CardController();
            fxmlLoader.setController(controller);
            fxmlLoader.setRoot(controller);
            Parent card = (Parent)fxmlLoader.load();
            fxmlLoader.setRoot(card);
            this.getChildren().add(card);
            controller.setCard(Hand.get(i));
}Fxml:
<fx:root type="FlowPane" xmlns:fx="http://javafx.com/fxml"
         stylesheets="view/Style.css">
    <children>
        
    </children>
</fx:root>

Well, I was bored...
This "game" has a hand of up to five cards. You can deal from a deck to the hand, and then play (or discard) a card by double-clicking on it.
The model comprises a Card class, a Deck class, and a GameModel class. The last one tracks the hand and deck and the relationship between them. Card and Deck were written from my memory of reading an example of using Enums by Josh Bloch.
Card.java
package cardgame;
public class Card {
     public enum Rank {
          Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King
     public enum Suit {
          Clubs, Diamonds, Hearts, Spades
     private final Rank rank;
     private final Suit suit;
     public Card(Rank rank, Suit suit) {
          this.rank = rank;
          this.suit = suit;
     public Rank getRank() {
          return rank;
     public Suit getSuit() {
          return suit;
     @Override
     public String toString() {
          return String.format("%s of %s", rank, suit);
     @Override
     public int hashCode() {
          final int prime = 31;
          int result = 1;
          result = prime * result + ((rank == null) ? 0 : rank.hashCode());
          result = prime * result + ((suit == null) ? 0 : suit.hashCode());
          return result;
     @Override
     public boolean equals(Object obj) {
          if (this == obj)
               return true;
          if (obj == null)
               return false;
          if (getClass() != obj.getClass())
               return false;
          Card other = (Card) obj;
          if (rank != other.rank)
               return false;
          if (suit != other.suit)
               return false;
          return true;
}Deck.java
package cardgame;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import java.util.Random;
import cardgame.Card.Rank;
import cardgame.Card.Suit;
public class Deck {
     private final List<Card> cards;
     private Deck() {
          cards = new LinkedList<Card>();
          for (Suit suit : Suit.values())
               for (Rank rank : Rank.values())
                    cards.add(new Card(rank, suit));
     public static Deck newDeck() {
          return new Deck();
     public static Deck shuffledDeck() {
          return newDeck().shuffle();
     public Deck shuffle() {
          final List<Card> copy = new ArrayList<Card>(cards.size());
          Random rng = new Random();
          while (cards.size() > 0) {
               int index = rng.nextInt(cards.size());
               copy.add(cards.remove(index));
          cards.clear();
          cards.addAll(copy);
          return this;
     public Card deal() {
          return cards.remove(0);
     public int size() {
          return cards.size();
}GameModel.java
package cardgame;
import javafx.beans.binding.BooleanBinding;
import javafx.beans.property.BooleanProperty;
import javafx.beans.property.ReadOnlyBooleanProperty;
import javafx.beans.property.SimpleBooleanProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
public class GameModel {
     private ObservableList<Card> hand;
     private Deck deck;
     private BooleanProperty canDeal;
     public GameModel() {
          this.hand = FXCollections.observableArrayList();
          this.deck = Deck.newDeck().shuffle();
          this.canDeal = new SimpleBooleanProperty(this, "canDeal");
          canDeal.bind(new BooleanBinding() {
                    super.bind(hand);
               @Override
               protected boolean computeValue() {
                    return deck.size() > 0 && hand.size() < 5;
     public ObservableList<Card> getHand() {
          return hand;
     public ReadOnlyBooleanProperty canDealProperty() {
          return canDeal;
     public boolean canDeal() {
          return canDeal.get();
     public void deal() throws IllegalStateException {
          if (deck.size() <= 0) {
               throw new IllegalStateException("No cards left to deal");
          if (hand.size() >= 5) {
               throw new IllegalStateException("Hand is full");
          hand.add(deck.deal());
     public void playCard(Card card) throws IllegalStateException {
          if (hand.contains(card)) {
               hand.remove(card);
          } else {
               throw new IllegalStateException("Hand does not contain " + card);
}The CardController is the controller for a CardView. It takes a reference to a Card and its initialize method initializes the view to display it (the view is just a simple label).
CardController.java
package cardgame;
import javafx.fxml.FXML;
import javafx.scene.control.Label;
public class CardController {
     private final Card card;
     @FXML
     private Label label;
     public CardController(Card card) {
          this.card = card;
     public void initialize() {
          label.setText(String.format("%s%nof%n%s", card.getRank(),
                    card.getSuit()));
}The HandController is the controller for the display of the hand. This is where most of the action happens. The trick here is that it requires a reference to a GameModel, which needs to be injected from somewhere, so we need a setModel(...) method, or something similar. I didn't want to assume the order of events: i.e. whether the model is injected before or after the initialize() method is invoked. To keep this flexibility, I used an ObjectProperty to wrap the model, and listen for changes to it. When the model is updated, I register a listener with the hand (exposed by the model). This listener in turn rebuilds the views of the cards when the hand changes. There's also a "deal" button, whose disabled state is managed by binding to a property in the model (using a neat trick from the Bindings class to allow the model value to be dynamic).
HandController.java
package cardgame;
import java.io.IOException;
import javafx.beans.binding.Bindings;
import javafx.beans.property.ObjectProperty;
import javafx.beans.property.SimpleObjectProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.ListChangeListener;
import javafx.event.EventHandler;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Node;
import javafx.scene.control.Button;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.Pane;
public class HandController {
     private ObjectProperty<GameModel> model;
     @FXML
     private Pane container;
     @FXML
     private Button dealButton;
     public HandController() {
          this.model = new SimpleObjectProperty<GameModel>(this, "model", null);
          final ListChangeListener<Card> handListener = new ListChangeListener<Card>() {
               @Override
               public void onChanged(Change<? extends Card> change) {
                    container.getChildren().clear();
                    try {
                         for (Card card : model.get().getHand()) {
                              container.getChildren().add(loadCardView(card));
                    } catch (IOException e) {
                         e.printStackTrace();
          model.addListener(new ChangeListener<GameModel>() {
               @Override
               public void changed(
                         ObservableValue<? extends GameModel> observable,
                         GameModel oldValue, GameModel newValue) {
                    if (oldValue != null) {
                         oldValue.getHand().removeListener(handListener);
                    if (newValue != null) {
                         newValue.getHand().addListener(handListener);
     public void setModel(GameModel model) {
          this.model.set(model);
     public void initialize() {
          dealButton.disableProperty().bind(
                    Bindings.selectBoolean(model, "canDeal").not());
     private Node loadCardView(final Card card) throws IOException {
          FXMLLoader loader = new FXMLLoader(getClass().getResource(
                    "CardView.fxml"));
          CardController controller = new CardController(card);
          loader.setController(controller);
          Node cardView = (Node) loader.load();
          cardView.setOnMouseClicked(new EventHandler<MouseEvent>() {
               @Override
               public void handle(MouseEvent event) {
                    if (event.getClickCount() == 2) {
                         model.get().playCard(card);
          return cardView;
     public void dealCard() {
          model.get().deal();
}Here are the FXML files:
CardView.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.layout.StackPane?>
<?import javafx.scene.control.Label?>
<?import java.lang.String?>
<StackPane xmlns:fx="http://javafx.com/fxml" prefHeight="150" prefWidth="80" minWidth="80" maxWidth="80" minHeight="150" maxHeight="150">
     <Label fx:id="label" >
     </Label>
     <styleClass>
          <String fx:value="card"/>
     </styleClass>
</StackPane>Hand.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.layout.FlowPane?>
<?import javafx.scene.layout.BorderPane?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.ScrollPane?>
<?import java.lang.String?>
<BorderPane xmlns:fx="http://javafx.com/fxml" fx:controller="cardgame.HandController" >
     <center>
          <FlowPane hgap="5" vgap="10" fx:id="container">
          </FlowPane>
     </center>
     <bottom>
          <Button text="Deal" onAction="#dealCard" fx:id="dealButton"/>
     </bottom>
</BorderPane>The overall application is managed by a Game.fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.layout.BorderPane?>
<BorderPane xmlns:fx="http://javafx.com/fxml" fx:controller="cardgame.GameController">
     <center>
          <fx:include source="Hand.fxml" fx:id="hand" />
     </center>
</BorderPane>with a GameController:
package cardgame;
import javafx.fxml.FXML;
public class GameController {
     @FXML private HandController handController ;
     private GameModel model ;
     public GameController() {
          model = new GameModel();
     public void initialize() {
          handController.setModel(model);
}Game.java is the main class:
package cardgame;
import java.io.IOException;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
public class Game extends Application {
     @Override
     public void start(Stage primaryStage) throws IOException {
          Scene scene = new Scene(FXMLLoader.<Parent>load(getClass().getResource("Game.fxml")), 600, 400, Color.DARKGREEN);
          scene.getStylesheets().add(getClass().getResource("style.css").toExternalForm());
          primaryStage.setScene(scene);
          primaryStage.show();
     public static void main(String[] args) {
          launch(args);
}and then a style sheet
style.css:
@CHARSET "US-ASCII";
.card {
     -fx-background-color: white ;
     -fx-border-color: black ;
     -fx-border-radius: 5 ;
     -fx-border-style: solid ;
     -fx-padding: 5 ;
.card .label {
     -fx-text-alignment: center ;
}

How can I create a variable size array?

How can I create a variable size array?

ok then how can i create a new vector object?If you don't know that, you need to go back to your text book and study some more. Or read the tutorial on the basics of Java: http://java.sun.com/docs/books/tutorial/java/index.html
After reading that you can move on to: http://java.sun.com/docs/books/tutorial/collections/index.html
Anyway, the answer to your question is, of course:
Vector v = new Vector();(But you should probably use ArrayList instead of Vector.)

How do i send an array of clusters with variable size over TCP/IP?

Hi,
I'm trying to send an array of clusters with varible size over TCP/IP,. But I'm facing the following problems:
1) I need to accept the size of array data from the user and increase the size dynamically.
I'm doing this using the property node but how do I convey the new size to my TCP read?
2) I need to wire an input to my 'bytes to read' of the TCP read.
But the number of bytes to read changes dynamically
How do I ensure the correct number of bytes are read and reflected on the client side?
3) Is there anyway I can use global varibles over a network such that their values are updated just as if they would on one computer?
Will be a great help if someone posts a solution!
Thank you...

twilightfan wrote:
Altenbach,
... xml string. ...number of columns that I'm varying using property node s... I solved these problems by using a local variable as the type input ...o TCP read is creating a problem.... second TCP read gets truncated data because
its no longer just the first four bytes that specify the length of the data, it could be more as my array of cluster can be pretty huge.
Instead of writing long and complicated sentences that make little sense, why don't you simply show us your code?
What does any of this have to do with xml strings???? I don't see how using a local variable as type input changes anything. The user cannot interact with "property nodes", just with controls. Please clarify. Once the array of clusters is flattened to a string you only have one size that describes the size of the data, no matter how huge it is (as long as it is within the limits of I32). Similarly, you read the string of that same defined length and form the array of clusters from it. How big are the strings? What is your definition of "huge"?
Here's is my earlier code, but now dealing with an array of clusters. Not much of a change. Since you have columns, you want 2D. Add as many diensions you want, but make sure that the control, diagram constant, and indicator all match.
The snipped shows for a 1D array, while the attached VI shows the same for a 2D array. Same difference.
Message Edited by altenbach on 01-31-2010 01:13 AM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
FlattenArrayOfClusters.vi ‏12 KB
ioclusters3MOD.png ‏25 KB

Variable Size Error.

Hi Experts,
I am using a variable to get the error message and use that in sending mail, but when i ran the scenario its error out saying,
"ORA-12899: value too large for column".
My assumption is when the error message exceed more than 200 characters its error out. So my question is how to increase the size of the variable size?
Please help..
Thanks

Hi G,
Thanks for your reply,
Datatype : AlphaNumeric
Action: Historize (I tried Not Persistance, last value also).
please let me know if you need anything.

Variable size item problem in BOM

hi all,
We have semi-finished material with componets as variable size items (item cat. R)
Now in the variable size tem data, Size 1 = 1,406 MM, Size 2 = 1,220 MM. Numner is 1 ST, formaula place is blank.
Qty Var-Sz Item is calculated by system is 3.957 M2. On what basis this value is calculated?
In the component material we have maintained a componenet scrap quantity as 15%.
BOM ratio of header : component = 1NOS : 1 ST
Again when we create a production order for the header, for 1 NOS header quantity component qty becomes 2.
For 2 NOS of header qty, component becomes 3 like this.
Why this happens..
Regards,
Srijit.

Thread closed

Variable size item:

Hi
Company procures copper sheet of certain thickness with different sizes. Stock keeping dimension is KG. Material master has alternative unit of measure and conversion factor for KG and cubic centimeter. Design department will enter this sheet dimension like 15005003 in BOM and it will correctly calculate KG with formula entered.
My problem is shop floor person will come to know the dimension and KG relation but how store person will come to know what size he has to cut and issue against production order. As while issuing goods he can only see quantity in KG and not in cubic centimeters ?
Surendra

SDBSAP ,
If its unanswered why you flaged it answered .......?
and solution to your problem in standard sap is not possible.
You need to go for development, logic can be , for all variable size items from a BOM you need to pick size 1 size 2 and size 3 to print on issue slip . It will give exact dimension to your storage person to issue the correct dimension sheet to shop floor.
Regards
Ritesh

Variable size items.

Hi, im a PP consultant from bombay, i had a query regarding a client who is inti\o wooden frame manufacturing it is a strictly discrete industry and the client specifications vary with almost every request. at the moment the client is creating a new mat master for every new product thus causing the master materials to run into 50-60 thousand currently. i want to know if i can use variable size items to reduce the number of materials defined as all of the materials are from standard sized planks. stock is required to be maintained for all components individually.

Hi,
"If you want different-sized sections of a material (raw material) to be represented by one material number in BOM items, you use this item category."
Ans lies in the your last statement(stock is required to be maintained for all components individually)You cannot go for variable size item as you need to maintain stock individually
Revert if you have further query
Reward points if useful
Regards,
SVP

Variable size memory is not matching....

Hello, Here is my oracle version..
Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Prod
PL/SQL Release 10.1.0.2.0 - Production
CORE 10.1.0.2.0 Production
TNS for 32-bit Windows: Version 10.1.0.2.0 - Production
NLSRTL Version 10.1.0.2.0 - Production
My variable size memory should be exactly same as Java pool, large pool, shared pool.
scott@orcl> show sga
Total System Global Area 171966464 bytes
Fixed Size 787988 bytes
Variable Size 145488364 bytes
Database Buffers 25165824 bytes
Redo Buffers 524288 bytes
scott@orcl> select
2 sum(bytes)
3 from
4 v$sgastat
5 where
6 pool in ('shared pool', 'java pool', 'large pool');
SUM(BYTES)
143369796
The stream pool size should be part of SGA. But it is not showing in v$sgastat view....
In oracle9i, variable size was matching with the above query. Now it is not matching..
Am i missing any thing in my above query? Any help is highly appreicated...

still it is not matching... variable size is 145488364 bytes... but the below is showing 142606336.
scott@orcl> show sga
Total System Global Area 171966464 bytes
Fixed Size 787988 bytes
Variable Size 145488364 bytes
Database Buffers 25165824 bytes
Redo Buffers 524288 bytes
scott@orcl> select sum(bytes) from v$sgainfo where name in('Streams Pool Size',
2 'Java Pool Size','Large Pool Size','Shared Pool Size');
SUM(BYTES)
142606336
scott@orcl>
scott@orcl> select * from v$sgainfo;
NAME BYTES RES
Fixed SGA Size 787988 No
Redo Buffers 524288 No
Buffer Cache Size 25165824 Yes
Shared Pool Size 83886080 Yes
Large Pool Size 8388608 Yes
Java Pool Size 50331648 Yes
Streams Pool Size 0 Yes
Granule Size 4194304 No
Maximum SGA Size 171966464 No
Startup overhead in Shared Pool 29360128 No
Free SGA Memory Available 0
11 rows selected.
scott@orcl>

Variable size item formulla key funtion module,

I am developing user interface for manual reservation (cutsom development). User wants to calculate quantity of material if he enters size1, size2 and size3. Also he wants that a formula key option to be provided so that he can mention conversion formula. Is there any standard function module for variable size formulla funtion module.
I want to use same logic of variable size item formulla of bom in the above custom template.
Please suggest.

Hi
The function module EVAL_FORMULA and FORMULA_EVALUATION may help you as they all export calculated values as output. Please go to SE37 to click the button 'Function module documentation' to see more information.
Or go to SE80 to check the function group CALC to see more function.
Best Regards
Leon.

Variable size item Vs Stock item

Hi Experts,
I have a doubt regarding the use of variable size item over standard stock item. I will give an example as under.
I have an item called cable which is to be added to a header material. This cable will be used in many header materials. I tried using variable size item as an item category and given the following parameters
Size 1 as 5 M(UOM)
Formula (L1)
Number (1) ST
System calculates the value as 5 M for qty var sz item
In the item over view screen, quantity against the material 1 ST
My query is instead of giving the qty as 5 M and use a formula, what if i directly give the item as stock item "L" and directly define the qty as 5M. If there is no difference between the above, why should we use the variable size item? instead we can directly calculate and give the qty for the item right. Kindly clarify the application of variable size item over standard stock item category.
In both the cases I will be having one material code in the system and the qty will be changed in the respective BOM of two different header materials.
Regards,
Sridharan M

Hi
In addition to the stock keeping unit you can provide the details like length, width and thickness, say for example if you want to fabricate a metal part. You may need length width and thickness of the plate to be used for fabrication. This details you will be entering in the variable size items and using the formual you can calculate the required quantity in KG.
This kind of variable size items you need not calcualte the weight of the material you just need to enter the sizes as per the drawing as you prepare the BOM.
This varies with respect to size.... Variable Size Items
Soundar

Variable size material assigning problem

Hi friends,
I am trying to assign a variable size material for an activity. There is a scenario in which they are giving only one dimension and no formula is been used to calculate but the required qty field is rounding off for next decimal point for eg: if the size of material i am giving as 0.912 mm then the required qty is round off to 0.920. Can any one please tell me do we have any config setting to be done to take out this rounding off decimal point.
Thanks
Satish.

the data element for required quantity CO_MENGE has 3 places of decimal - so basically it should be fine
I have checked in my system and I can see 0.912 for a material with dimension length
the other thing is check the material master - additional data for units of measure - or there might be some program rounding off the units to 2 digits
If you are using a custom unit then check CUNI and make sure it is not set to 2 decimal places

Variable Size Item Data in Purchase Requisition

Hi
When ever the Purchase Requisition of the Variable size material is
raised, how do i view,for reference,the Variable Size Item data from
Bill of materials .
Steps for the Reconstruction
1.Create a Variable size Item Bill of material.
2.Run MRP agianst the Variable size material's dependent demand.
3.View the Purchase requisition of the Variable size Item, to take a
note of the Item Data.

Thread closed

Variable size material

how we create variable size material
thanks in advance

Dear,
T-Code-CS01
1. Enter the material for which you want to create BOM, Plan and BOM usage.
2. Select the item category "R", enter the component. Now you will be taken to the "Variable item data" screen.
3. Enter the datas of Size 1, 2 & 3 (as required) and the unit of the size & number. System will calculate the "Qty of var- size item" in the unit assigned to the basic data of the material master of the component.
4. Save
You can change the unit of the variable size item as per your requirement in OS28
Regards,
R.Brahmankar

Storage location selection for variable size item

Hi All
There is a BOM of finished good Material "XYZ" and there is a component "A" in the BOM. This Component A is a variable size item, its a metallic bar of length 4 meters. In BOM XYZ, only 1.5 meters is consumed.
Now when a production order is made for XYZ and the confirmation is done with movement type 261. All the materials are backflushed along with component A . The client's requirement is to transfer the remaining length of component A (i.e. 4 - 1.5 = 2.5 meters ) to a different storage location at the time of confirmation.
Please let me know how is it possible.
Thanks in Advance
Rohit

FULL STEPS:
1.first do mb1b 311 mvmt transfer posting for the components from raw-stor location to prod stor location. you can do for A
2. do GI for the components. for A for that final product . consume 1.5 so. the remaining component will be (3 ) there in the stor. location as per sap. (check in mmbe)
3. then do mb1b 311 transfer posting for the A component to raw-stor location. from the prod stor location.
or rever the transfer posting mb1b 312.

Variable size 2D arrays

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