array element references confused me

Similar Questions

• Reference to the array of Clusters with an array element

  Hello

  I have an array of clusters of CONTROL (qualifying as "upper-tier cluster table") with one of the items is an array of cluster cluster (see attached).

  I intend to "reference" of this cluster of high level at different screws (as add item VI, insert item VI, delete the item VI etc.) and access (add/edit delete) the elements of this array.

  

  In my code, how I cataloged the array element (cluster) on the cluster internal (as shown on the figure)?

  I use LV RT on PXI.

  

  Hello smercurio_fc,

  Thank you for your example! Just a question: actually, with shift registers, is an example of creating a local copy of the full range? Even if the value of the lowest level cluster is changed, is the complete table is updated at the end (registry value to offset the full picture at the right end is updated using the reference node and property)? This VI will be slow when the size of the array becomes great?

  Comment of nicely.

• Writing only to certain parts of the cluster in an array by reference

  Hello

  I have an array of clusters that I use as well to view and enter data, i.e. elements of the cluster are unmodifiable (disabled) controls used as indicators of "false" (numeric values, strings, LEDs) and some are normal witnesses (numerical values, buttons).

  The "indicator" part of this cluster table must be constantly updated (for example with the positions of the engines), normally by replacing the elements according to cluster in a loop and writing in the table. This can lead to conditions of race with the part 'control': If the user enters data in a 'bad' timing control, it gets immediately replaced by the old value - in this case the update process began just before the user input and completed just after the entrance of (which may be a simple click is enough) , so the old values of controls are rewritten on user controls, as the table should be rewritten as a whole.

  Now, I'm looking for a solution to this critical race condition without changing this 'mixed' approach of control/indicator (e.g. by control and indicator tables separated next to each other and paired scrolling or so - which would make it much more horrible GUI design, among other disadvantages). I know that it is possible to change the value of an element in the cluster without having to rewrite the entire cluster using the element reference. However, it's more complicated if you have an array of clusters, because you want the cluster to a certain index table and to my knowledge, there is no such property that gives you for example the reference to the item table located in an index of certain (who is a lack of long date in the table of Labview manipulation). If you change the 'value' of an element of the cluster property in a table, it seems to affect the 'last active' element of the array, at least it is correlated with the array element that was clicked on last. Maybe there's a way somehow programmatically set that ' last active ' array element and browse the table in this way (setting the flag "correspondent" elements of the cluster by reference) or maybe someone knows a solution 'Nice' and elegant?

  I hope you understand what I mean

  Thanks in advance!

  To avoid such conditions of race, make sure what you write on the Board in the same place change you and write only the data for the indicators. Practically, this means that if you have an event for the control change value, you must have another case of event in the same structure of update of the indicators (timeout or a user event) and make sure that the indicator event takes the rest of the data of the current value (for example through a terminal or a local variable or the DVR suggested Steve). Similarly, you can use the terminal control to the current value of the control for the indicators rather than depend on the event containing the correct value.

• read part of an array element

  Hi all.

  As indicated in the title, I'm reading part of an array element.

  What I'm doing is reading a LeCroy scope values using a 'write' 'read' I returned the values in a table, but the question is the scope returns a value of "1, 52.33E - 3".

  I just want the element to be 52,33 so I can use it for other calculations.

  For example, my table.

  ' 1, 34.334E - 3.

  ' 1, 53.343E - 3.

  ' 1, 143.232E-

  And I want it to be

  34.334

  53.343

  143.232

  Thank you!

  Use string functions (match pattern) to find the comma. Then convert the part after the comma to a number using the string appropriate to the Number function.

  Are throwing you what looks like an exhibitor intentionally?

  The last string seems to miss the exhibitor. This suggests you may have problems with your communications with the instrument.

  Lynn

• Get all the different values in a table - 'or array elements' does not work with I32

  Hello

  I just found out that "array elements or" does not work with a table 1 d of integer values. I didn't expect that.

  I did a semi quick forum search and did not find a pointer to an effective solution. Can someone give me a hint?

  Do not back my initial intention is to list all the values that appear in an array of integers.

  I thought that if I converted the figures for powers of 2 and or I had solved the problem at hand - only to discover that the elements of array does not.

  If someone could propose a different approach, I'd be happy too.

  I should mention that the execution time is a factor here - I need a fast code, but any suggestions are welcome because they could help me get started.

  Best regards Florian

  Hi Florian.

  try this:

  

  "Function, it seems, the table of GOLD ' is polymorphic (as written in the context-sensitive help), but does not support arrays of I32. At least the error message means just that...

• Using an array of references to Boolean controls as the input to a sub - VI edit propierties of orders...

  Hello

  I have a group of boxes and I want them to be exclusive one to change the objects visible to my vi when I change their State. So that my clear code, I decided to create a Subvi, which implements these features. My Subvi recives an array of references to objects that I want to change the visibility, an array of references to the boxes (to be change it's values to make them exclusive when one of the boxes change it is State) and an array of the values in the boxes in the last iteration (to be able to detect that we changed to true and false to others).

  The problem I have is that when I use a node property to get the actual values in the boxes in the Subvi (to compare to their State previus and detect changes) I will get a type variant, and not a Boolean value. I tried to set the mechanical action of Boolean references used as input in the Subvi as switch, but it doesn't seem to work. I understand this is cause of the Sub - VI does not know the type of Boolean values that will receive and assume the worst case...

  Is there a way to do what I want?

  I hope I've explained myself... Thanks in advance!

  There are several ways to deal with this, but it would be useful to see your code. Send the cluster in a VI, or those of the individual references boxes? It sounds like you are not using a strict reference. The workaround, since you know the type of data is to use the variant data and change the variant to a Boolean value, but this should not be necessary. Once again, some postal code so that we can be more help.

  Edit: looks like you are trying to hard-code the Radio buttons. You know LabVIEW has Radio buttons now, no?

• How can you specify the default value for the undefined array elements

  According to aid LV, the tables have two default values, the normal default value and the default value for the undefined array elements.

  I assume that there must be a way to specify the default value for later, but I can't find it anywhere.  Any ideas?

  I know that you can drag the item out of the table container.  Change the default value on this scalar element.  Then drag the item in table tank.

• A fundamental question/problem with the like undefined array element

  Hello everyone,

  Thanks for looking at my problem. I am very new script and javaScript, and I encountered a strange problem. I always try to solve all my problem myself, with documentation (it helps to learn) or as a last resort with the help of google. But in this case, I'm stuck. I'm sure its something very simple and elementary.

  Here I have a code that simply loads a text file (txt), load the contents of the file in a "var glad." This summary text file a font family name, every name on a new line, as:

  Albertus

  Antenna

  Antique

  Arial

  Arimo

  Front

  Barber1

  Barber2

  Barber3

  Barber4

  Birch

  Blackoak... .etc

  Now I hollow the variable content of loop, extract each letter and add it to the list '[i]' table. If the character is a line break the list [i] table adds another element (i = i + 1); That's how I separate each name in its own element of array.

  The problem I encounter is, when I have hollow loop table fontList and $.writeln (fontList [i]) is the result in the console :

  undefinedAlbertus

  undefinedAntenna

  undefinedAntique

  undefinedArial... etc.

  I don't get serious, where the undefined comes? As far as I tested each digit to be added to the array element, I see nothing extraordinary.

  ----------------------------

  ----------------------------

  Here is my code:

  #target illustrator

  var doc = app.documents.add ();

  Open the file

  var myFile = new File ("c:/ScriptFiles/installedFonts-Families.txt");

  openFile var = myFile.open ("r");

  check if it is open

  if(OpenFile == true) {}

  {$.writeln ("the file has loaded")}

  else {$.writeln ("the file does not load, check the name or the path") ;}}

  load the contents of the file into a variable

  var content = myFile.read ();

  myFile.close ();

  var ch;

  var x = 0;

  var fontList = [];

  for (var i = 0; i < content.length; i ++) {}

  ch = content.charAt (i);

  If ((ch)! == (string.fromCharCode(0)) (10))) {}

  fontList [x] += ch;

  }

  else {}

  x ++;

  }

  }

  for (i = 0; i < fontList.length; i ++) {}

  $.writeln (fontList [i]);

  }

  doc. Close (SaveOptions.DONOTSAVECHANGES);

  -----------------

  -----------------

  Thanks for any help or an explanation. If you have any tips on how to improve my practices or any suspicion, please do not hesitate to say. Thank you

  Hi vladac54380629,

  better, you try something like this:

  #target illustrator
  
  //var doc = app.documents.add(); 
  
  //open file
  var myFile = new File ("c:/ScriptFiles/installedFonts-Families.txt");
  var openFile = myFile.open("r"); 
  
  //check if open
  if(openFile == true){
      $.writeln("The file has loaded")}
  else {$.writeln("The file did not load, check the name or the path");} 
  
  //load the file content into a variable
  var fontList = []; 
  
  var content = myFile.read();
  fontList = content.split ("\n")
  myFile.close(); 
  
  for ( i = 0; i < fontList.length; i++) {
     $.writeln(fontList[i]);
    }
  
  //doc.close (SaveOptions.DONOTSAVECHANGES);
  

  Have fun

  A note:

  The real font names may be different from your own list for example:

  Arial! = ArialMT

  Birch! = BirchStd

  Blackoak! = BlackoakStd

  Concerning

• How to access an array element?

  I'm trying to access a table on a click of a button element.  Complete creation, I have this: var = students ["Theo Arguna", "Leif Arneson", 'John Egan', "Sakura Nakahara", 'Rebecca Pilkington', "Debra Sutter"];

  the passage of the mouse button I put this:

  var myVariable = sym.getVariable("students.eq[0]");

  sym.getSymbol("message").$("Text4").html ("Click now to see" + sym.getVariable ("myVariable") + "working.");

  When I test I get "undefined" say where "$myvariable" is in the line above the code.

  Any suggestions on how to get the array element in this?

  Hello

  «"«You are almost there...»»»

  Put this in your creationComplete event:

  sets the variables table students

  sym.setVariable ("students", ["Theo Arguna", "Leif Arneson", "John Egan", "Sakura Nakahara", "Rebecca Pilkington", "Debra Sutter"]);

  And put it in your button mouseover event:

  get the array element you want

  var myVariable = sym.getVariable ("students") [0];

  sym.getSymbol("message").$("Text4").html ("Click now to see" myVariable + "working.");

  HTH,

  Joe

• Tween an array element

  I created a script that will movieclips to fill the stadium. In this case, a ranking.

  each created movieclip is positioned and placed in a table.

  The problem becomes an array element and the power of tween it

  * I would like to experiment with tween different combinations to get them out of the scene. Here's what I got

  I am able to get the clips on the stage... [Can't get them off =]

  Import mx.transitions.Tween;

  Import mx.transitions.easing. *;

  Block = new Array();

  var Xposition:Number = 0;

  var Yposition:Number = 0;

  var stack:Number=Math.ceil(Stage.height/30);

  var Numofstacks:Number=Math.ceil(Stage.width/30);

  var fadeit:Tween;

  var n: Number = 0;

  for (r = 0; r < (Numofstacks); r ++) / / 25

  {

  PositionY = 0;

  for (c = 0; c < (stack); c ++) / / 3

  {

  var particle = this.attachMovie ("block", "gabarit@sur" + r + c, this.getNextHighestDepth ());

  Particle._y = PositionY

  Particle._x = which

  Block [n] = particle._name;

  trace (Particle._name)

  PositionY = PositionY + 30;

  n ++

  }

  Which = which + 30

  }

  runit var = setInterval (effects, 3000)

  effects function (): Void

  {

  trace ("Go")

  for (a = 0; c <(Block.length-1); a ++) / / 3

  //{

  Yvan = new Tween (block [0], "_alpha", Strong.easeOut, 100, 0, 1.5, true);

  //}

  clearInterval (runit);

  }

  Do not store the _name in table property, store the particle itself.

  Block [n] = particles;

• The search in a table a value then delete this array element

  Hello.

  I have an array of VO (id, link, title, url...) I want to get an ID of this array element and remove the element with the corresponding id. Any thoughts on how I would go to this topic?

  Thanks in advance!

  Ryan

  I don't know much on your and this probably isn't the most elegant solution, but you can do something like:

  for (var i: Number = 0; i<>

  {

  If (myVOArray [i] ["id"] is "someId")

  {

  myVOArray.splice (i, 1);

  }

  }

• How to make reference to the multidimensional array element?

  What should I change in the next statement in the dbms_output to display 'Ken' and avoid the error?
  
  Thank you
  -Ken
  

  create or replace type kja_person_name_rec as object
  ( pena_id number(10)
  , pers_id number(10)
  , pnty_cd varchar2(10)
  , first_nm varchar2(100)
  , family_nm varchar2(100)
  );
  /
   
  Type created
  create or replace type kja_person_name_tbl as table of kja_person_name_rec not null;
  /
   
  Type created
  create or replace type kja_person_rec as object
  ( pers_id number(10)
  , birth_dt date
  , person_names kja_person_name_tbl
  );
  /
   
  Type created
  create or replace type kja_person_tbl as table of kja_person_rec not null;
  /
   
  Type created
  declare
    l_person_name  kja_person_name_rec;
    l_person_names kja_person_name_tbl;
    l_person       kja_person_rec;
    l_persons      kja_person_tbl;
  begin
    l_person_name  := kja_person_name_rec( 1, 1, 'LEGAL', 'Ken', 'Anderson');
    l_person_names := kja_person_name_tbl( l_person_name);
    l_person       := kja_person_rec( 1, to_date( '1955-SEP-22', 'YYYY-MON-DD'), l_person_names);
    l_persons      := kja_person_tbl( l_person);
   
    dbms_output.put_line( 'l_persons(1).first_nm = '|| l_persons(1).person_names.first_nm);
  end;
  /
   
  declare
    l_person_name  kja_person_name_rec;
    l_person_names kja_person_name_tbl;
    l_person       kja_person_rec;
    l_persons      kja_person_tbl;
  begin
    l_person_name  := kja_person_name_rec( 1, 1, 'LEGAL', 'Ken', 'Anderson');
    l_person_names := kja_person_name_tbl( l_person_name);
    l_person       := kja_person_rec( 1, to_date( '1955-SEP-22', 'YYYY-MON-DD'), l_person_names);
    l_persons      := kja_person_tbl( l_person);
  
    dbms_output.put_line( 'l_persons(1).first_nm = '|| l_persons(1).person_names.first_nm);
  end;
   
  ORA-06550: line 13, column 80:
  PLS-00302: component 'FIRST_NM' must be declared
  ORA-06550: line 13, column 3:
  PL/SQL: Statement ignored
   
  SQL> 

  Hello

  Ken Anderson says:
  What should I change in the next statement in the dbms_output to display 'Ken' and avoid the error?

  Thank you
  -Ken

  create or replace type kja_person_name_rec as object
  ( pena_id number(10)
  , pers_id number(10)
  , pnty_cd varchar2(10)
  , first_nm varchar2(100)
  , family_nm varchar2(100)
  );
  /
  
  Type created
  create or replace type kja_person_name_tbl as table of kja_person_name_rec not null;
  /
  
  Type created
  create or replace type kja_person_rec as object
  ( pers_id number(10)
  , birth_dt date
  , person_names kja_person_name_tbl
  );
  /
  
  Type created
  create or replace type kja_person_tbl as table of kja_person_rec not null;
  /
  
  Type created
  declare
  l_person_name  kja_person_name_rec;
  l_person_names kja_person_name_tbl;
  l_person       kja_person_rec;
  l_persons      kja_person_tbl;
  begin
  l_person_name  := kja_person_name_rec( 1, 1, 'LEGAL', 'Ken', 'Anderson');
  l_person_names := kja_person_name_tbl( l_person_name);
  l_person       := kja_person_rec( 1, to_date( '1955-SEP-22', 'YYYY-MON-DD'), l_person_names);
  l_persons      := kja_person_tbl( l_person);
  
  dbms_output.put_line( 'l_persons(1).first_nm = '|| l_persons(1).person_names.first_nm);
  end;
  /
  
  declare
  l_person_name  kja_person_name_rec;
  l_person_names kja_person_name_tbl;
  l_person       kja_person_rec;
  l_persons      kja_person_tbl;
  begin
  l_person_name  := kja_person_name_rec( 1, 1, 'LEGAL', 'Ken', 'Anderson');
  l_person_names := kja_person_name_tbl( l_person_name);
  l_person       := kja_person_rec( 1, to_date( '1955-SEP-22', 'YYYY-MON-DD'), l_person_names);
  l_persons      := kja_person_tbl( l_person);
  
  dbms_output.put_line( 'l_persons(1).first_nm = '|| l_persons(1).person_names.first_nm);
  end;
  
  ORA-06550: line 13, column 80:
  PLS-00302: component 'FIRST_NM' must be declared
  ORA-06550: line 13, column 3:
  PL/SQL: Statement ignored
  
  SQL> 
  

  L_persons (1) .person_names is a kja_person_name_tbl. Kja_person_name_tbls is not first_nms; only kja_person_name_recs do.
  Near the end, instead of

     dbms_output.put_line( 'l_persons(1).first_nm = '|| l_persons(1).person_names.first_nm);
  

  Try

  dbms_output.put_line( 'l_persons(1).first_nm = '|| l_persons(1).person_names(1).first_nm);
  --                                                                   added  ^^^
  

• Resize the array element programmatically

  Hi, I need to programmatically resize the element of a matrix. The external framework of the matrix control must take the same size, but the internal element should chang size programmatically.

  

  I have found no property/method to do this. Wait using Xcontrol I guess.

  Any idea?

  Thank you.

  Of your image that you inserted, I guess your "matrix" is a display of 2D LED array.

  In order to resize these elements all in now the 'original size of the matrix", you must implement two steps:

  1 resize LEDs:

  • Get ArrayElement reference
  
  
  • Convert the reference to Boolean
  
  
  • Set the width and height for the Boolean value of the new value

  Please note that now change the size of all THE LEDs. This is because all items in a table share the same properties (including size) with the exception of the "Value" property

  In addition, the table shell is resized as it still shows the same amount of LEDs (columns, rows)

  2. calculate the new number of columns/rows to keep the table shell roughly the same size

  • Calculate the multiplier for resizing in each direction (led to half size smaller multiplier of 2 to the number of lines/columns each)
  
  
  • Multiply the number of rows/columns of this multiplier (rounded)?
  
  
  • Set the size property of dimension to the hull of the array to the new values

  Please note that this will be 'resize the table to about the same size as it did before. Resizes rounding issues very likely (it has no LED 0.5 available!)

  Norbert

• to access the array elements

  Hello, everyone

  I am new to labview, & I need your help please,

  I did sample of a sinusoid, and the value of each sample is stored in a table (point by point).

  now I need to access the array by one element, because I want to subtract first element by others, one by one, in descending order, for example, if the first element is x, and other elements are y, y1, y2, y3, y4,... I mean x - y, x - y1, y2 x, x - y3... I need to do to have an account for a given period calculate the frequency.

  Please,

  I need someone to tell me, how to subtract one by one of the elements of paintings that I showed in the attachments below:

  Hello tinamoli,

  I have saved the VI for LabVIEW 8.0, removed the labels confusing (sorry, altenbach) and I added a small example for autoindexing.

  If you wire up a table in a loop for autoindexing has to be enabled by default. If you click right a tunnel there is an option to turn on/off indexing.

  I hope this helps.

  ULI

• How to change the value of the array element by using the property node

  Hello all :)

  IM using a table in the drop-down list box. the size of the array is not fixed.

  I want property strings [] from the drop-down list box to enter text in selection, but since I placed it inside the table im unable to use this property.

  I used 'arrayelem' reference property and property node connected to it but got no strings [] in the selection.

  so is it possible that I can use property strings]