LabVIEW oop variant in the private class data

Similar Questions

• Typedef reference FPGA not updated in the private class data

  I have a FPGA reference related to a typedef that is passed in a LVOOP object. If I change the FPGA of computer simulation of dev to the use of the actual hardware, all references to the typedef are updated which are controls on a diagram. But the typedef in my private class data seems not not to date, so I'm broken son until I replace the control to private data of my class with a copied from my block diagram. Has anyone seen this? Is there a CAR already? I can create a small project to reproduce if necessary.

  Edit: this also seems to happen when I change bitfiles or change to open a VI a bitfile opening in the Configure dialog box open FPGA VI.

  Hi Greg,.

  I was able to reproduce your problem thanks to your easy to follow instructions.

  I noticed that type def successfully by checking "Bind FPGA host of reference to the type definition" in the open FPGA VI reference configuration. What does not automatically update is the Issue.ctl of OBJECT-oriented programming, which has a nested type definition in the private data reference.

  The fastest solution, that I could find was to right click on "Issue.ctl" in the project, and then click Save. This problem immediately solved the broken wire error.

  While configuring open FPGA VI reference has the practical ability to bind to the def of type, it does not broadcast this change to data private to the class. I call not this bug, but I can see how you want it works this way.

  I would recommend you post that on theExchange of ideas (I see you're already regularly here).

• Can't place separator reference in the private class data control

  Any reason, I can't drag and drop a splitter reference leave my block diagram to a private open class data control? Basically, I'm ignored when I let it go, even if I see an icon 'drop' after that I drag the control.

  Well, I think I got smart and just placed a generic control Refnum into the command group, and then used the VI of the server class to identify it as a separator. Interesting how I could drag and drop references to the sub-panels and other types but not a divider.

• Private class data accessible parent in the child's class?

  Hello!

  I thought this would be obvious, but my search thing fails to me.  I hope that someone would be kind enough to answer my question LVOOP of beginner.

  I have a a parent class.  This parent class contains a set of private class data.  I have Setup all the data accessor methods.  I create a child class that has functions that need to access the data stored in its parent category.  His legacy is defined, but when I try to separate data from class all that I can't do are what is configured in the cluster of data of the child class.

  I watched a video and it seemed that the DataSet magically appeared and is accessible via the methods of children.  What Miss me?

  Thanks for the input!

  -nic

  To access the data of the parent in the child's class class, you must use the accessor of reading methods you created for the parent class get the parent class data (you must use the same accessor methods in the methods of the child because all the data of the class is private in LabVIEW). I hope this helps.

  -RW

• Error 91 - try to use the variant of the function of data

  I'm running a problem when you try to use variations in my application. I have a setup of State machine that a State creates a list of tasks (cluster of tables), and then converts it to the Variant. The variant is fed into a shift register that allows me to access the list of tasks of a different State.

  The problem comes when I try to use the variant of the function Data. I right click on the task cluster to create a constant and then wire to the TYPE of the variant of the function Data. I wire the variant of cluster of task to the terminal of the VARIANT. When I run the VI, I get error 91: or the possible reasons: LabVIEW: the variant data type is not compatible with the data type of wired for the input type. ».

  How can I get this error if the type that I have connected to a Terminal TYPE of the Variant Data terminal is a constant created from the exact type created a variant of?

  Section of the machine of the State where I wire the cluster variant:

  

  Section of the machine of the State where I use the data out of the cluster variant:

  

  The constant wire to the terminal of data TYPE variant was created from the cluster that is connected to the Variant type data. I don't understand how there is a type mismatch?

  Is there another State between these two?  I notice you have some tunnels 'Use default if unwired' coming out of the structure of your business.  First of all, clear on the tunnels.  Second, in cases where you do not only affect the data, the data directly from the tunnel entrance in the tunnel exit of the wire.  I recommend using the tunnels linked to make it even easier on yourself.

  With the default tunnels being output, your variant coming could really be empty, so the conversion fails.

• LabVIEW 2015, some of the Excel worksheet data moving to another Excel sheet

  Hi, guys.

  I want to achieve functional on the transfer of data between the Excel sheet.

  For example I get addresses of the cell, then the data in the passage of the address to the other Excel sheet a particular cell.

  What can I do? Thank you.

  Report generation Toolkit a buit in VI you can use for your fact condition, but its an add we toolkit to separate license.

  ActiveX doesn't require external tools, but need to create your own LabVIEW Code using properties and methods.

  Look at this thread which will be useful for creating custom code using Activex.

  http://forums.NI.com/T5/breakpoint/Excel-Board/m-p/379682/message-UID/379682#U379682

• Bug in the accessor class data member with name return

  Noticed a small bug in creating data classes accessor member.

  If you have an in the variable title carridge return the vi it creates will not save.

  You do not have to set two things for each control. By default if you show the legend that is the same as the lable. You only need to change and then only for those on the FP.

• Variant of the database of data does not not when converting from 2010 to 9 LV

  Hi all

  I have a simple code I made in 2010 LV for the display of the worksheet of MS access data in a table in which I used the tool of DATABASE DATA VARYING. But when I converted this file a LV 9 VI and open in another computer running the wires connecting the tool data terminal with LV 9, SELECT DATA and basic tool of DATA OF DATA VARIANT are broken. Error message is of Type 1: table 2d and type 2 is zero. Open the converted file even in 2010 LV gives no error and works well. Can someone please tell me what can I do to fix this problem.

  Kind regards

  Amine31.

  Amine31,

  The changes that you made in your attached vi is not correct.

  pls the vi attached to find...

• BNC-2110, 6023E PCI card and Labview V9.0: is the sensitivity of data acquisition (change more little detectable voltage) 0.002V?

  BNC-2110, 6023E PCI card and Labview V9.0: sensitivity of data acquisition (change more little detectable voltage) is 0.002V

  Hi, I use the software/hardware above to read a voltage of a potentiostat world Precision Instruments No..

  I'm trying to record changes in voltage as low as 0.0003V but using the wizard DAQ, I seem to be limited to a sensitivity of 0.002V.  This is the limit of real sensitivity or have I missed something?

  Any help would be greatly appreciated.

  Hi DCAM77,

  Thanks for joining the forums!

  The PCI or 6023E has a 12-bit ADC.  In other words, it can make the difference between 4096 (2 ^ 12) different levels within the range of cards.  The card you have has a selectable range by ± 10 V, ± 5 V, ± 500 mV or ±50 mV software.

  This means that the minimum detectable variation will be 4 mV, 20 mV, 244 µV or 24, depending on the chosen range µV.

  You should be able to use the ± 500 mV or ±50 mV to get the least significant bit (LSB) value, you need, even if it means that your signal is located between these values.  If not, then you need to consider other materials to the application, or the addition of external circuits across the signal.

• You can survey objects to see if the class data were populated in a child method?

  Question,

  If a parent method is cast down to the child class, and then a method is used to update some data in the class data, that the data is visible with a probe on the wire coming from the object? Or is the data view of the data in the parent class data and not the child?

  I have a problem where the parent class is executed instead of the child's class and I can't understand why...

  Thanks for all the ideas.

  I don't know if I know more precisely what you're asking, but maybe this will help you.

  

  The default probe will show you the data that makes up the type of wire.  Thus, for children's classes it shows data childs and no ancestor.

  If it is a top-level class thread displays only the data for the parent class, it will inform you of the actual wire type, since we know children can spend as their parents.

  Now, I think that what you're asking, is if it is possible to see the data for children, the son of parents.  I don't know, but you should be able to make sensors for you show more information based on the actual type.

• TestStand and LabVIEW treat differently polymorphics with instances with bodies of private classes.

  I have a class of LabVIEW and the class contains a method that is a polymorphic VI, and that polymorphic instances has. If I put the scope of Private, and the polymorphic bodies access to the public, then I can force developers who use the class to use the polymorphic VI (and not to call directly the instances). It's great. I like that.

  but...

  I have build a TestStand API that uses a polymorphic and instances as described above. I create a time of LabVIEW, with a type of call class member, and I target my class. TestStand does not support polymorphic VIs, meaning that polymorphs or its instances appear in the name of the Member list.

  This means that, to support my LabVIEW users and my TestStand users, I need to create two separate APIs, which is not a place of happiness to be. No matter who encounter this and found a solution? Or I'm looking at this wrong?

  It dawned on me later that we could actually change TS to be a static link to a particular instance VI via the polyVI. After all, you can manually select an instance specific polyVI. It would be just a way to declare in TS "link to this particular instance of the polyVI." Allowing the TS to say "I'm going through a public interface to join a private function."

  So instead of linking "A.i" you could bind to ' PolyVI.vi: A.i ".

• Why the parent class does not report data for child in LVOOP class?

  Attached is a practical program that I wrote to learn about the legacy with LVOOP.

  I have the impression of OOP is a Parent class describes the type of object.  Then the children inherent description of the parent.  The child may also have additional qualities, but it still contains the description of the parent.  If a child does not have a VI bearing the same name as the parent and the parent VI will be loaded and executed.

  My questions:

  (1) why does the Parent.lvclass:Read.vi not report 'Child' in the channel indicator when the child write VI has been sent?

  2) matches the data of the child, do not at all seen by the parent company even when it has the same definition (that's the String)?  I understand that the Parent do not know anything about the unique child elements, but I think we should know about the common themes which inherited the child.

  Here is my sample code:

  

  These are two different sets of data. The parent class has a data set containing the string, the class of the child also has a data set containing the string, but both of these channels are separated.

  This can be made apparent, by changing the names of the channels based on their respective categories:

  

  What you want is for your children, class VI write to access the data of the parent class. You can do this with a simple data VI member access in VI of the child:

  

• Get and set data using the ActionScript class

  Hello

  I use the ActionScript class to store the user name and password when the user logs

  
  com package
  {
  public class Login
  {
  public function Greeter (initialName:String = "")
  {
  }
  
  public var uname:String;
  password public var: String;
  
  }
  }

  Inside the Componet Login form, I am creating the object of this class of connection and affecting the data as shown in it

  var logincomp:Login = new login());

  logincomp.uname = UnameTI.text;
  logincomp. Password = PassTI.text;

  
  I need these data within an another CustomComponent, is it possiblke to access these data within an another componnet.

  Can I do this?

  
  var logincomp:Login = new login());

  var str:String = new String();

  Str = logincomp.uname;

  
  Please me tips

  
  I know it's possible with recording and Dispatching Evenets
  However, I'm not interested to use DEMONSTRATIONS. I'm using FLEX 3

  Please advise me if this is possible.

  THnaks in advance.

  Thanks for helping me learn Flex quickly.

  Hello

  You use a Singleton class as (class ModelLocator) If Yes, then you can put a single instance of your connection class in this class so that you can access this instance in the world in any component (infact with the app).

  Declare an instance of the connection object in the Singleton class like below

  var logincomp:Login = new login());

  Set the values in a single component, and you can access the values in the other component.

  The sample class Singleton as shown below...

  package com.model
  {

  [Bindable]
  public class ModelLocator
  {
  private static var instance: ModelLocator;
   
  public var logincomp:Login = new login());
   
  public void ModelLocator()
  {
  If (instance! = null)
  {
  throw (new Error ("cannot only one instance of ModelLocator"));
  }
  }
  Public Shared function getInstance (): ModelLocator
  {
  if(instance == null)
  {
  instance = new ModelLocator();
  }
  return instance;
  }
  }
  }

  If this post answers your question or assistance, please mark it as such.

  Thank you

  Jean Claude Chari

• allocation of an array of 2d in labVIEW and move to the DLL function to obtain data

  Hi all!

  I searched a lot about this, but one cannot find any solution. Please find attached the vi that I try to get a unit of 32 channels data,

  100000 samples per channel with 14-bit resolution. And please also find enclosed the header for my dll file. (in the header, it is the GetBuffers function).

  There is not a lot of data, it is a little more then 6 MB in the task of LAbVIEW Manager eats about 30 MB more memory, then it should. Are there explanations why?

  Because there is much more data in a single channel (million samples or more)

  Then I will try to allocate a 2D to data array, but when I try to run my LabVIEW vi crashes.

  Could you please help?

  Best regards

  Tomzi

  Dear Tomzi!

  To allocate the data in a table in LabVIEW, you must always initialize, as in a you must have a valid entry on cell (x-, y - 1) have a size of table of (x, y). It is usually best to use the function Array initialized for this purpose.

  There are ways to pass arrays 2D to DLLs, cand find you examples of both in examples > communicate with external Applications > external Code using the > integrating DLLs > DLL.vi call. Basically, LabVIEW can pass in the form of a big table 1 d 2D tables, so you'll need to spend too much table size index it. If you pass the array 2D handles it is preferable to use the typedef that LabVIEW generates for you, something along the lines of

  / * LabVIEW created typedef * /.
  
  typedef struct {}
  
  	Int32 dimSizes [2];
  
  	Double elt [1];
  
  	} TD1;
  
  typedef TD1 * TD1Hdl;

  I hope this helps.

  Best regards:

  Andrew Valko

  NOR Hungary

• How to combine real-time video with LabVIEW indicators so that the video can be displayed and saved with the overlay data

  Let's assume for the moment that I can find a device for which LabVIEW has the appropriate drivers.  Is it possible to combine the camera feed with digital indicator fields so that there is a video out showing the data superimposed on the live image?

  I'm talking about something like a screen of the camera where you see the camera settings are displayed on the image in the viewfinder.  Note I have one isn't about analysis of video data or somehow reading parameters of the camera to the camera.  Data would be temperatures, pressures, speeds, etc., acquired by different instruments at the same time the video is captured and processed somehow by LabVIEW.

  No problem Wildcatherder, don't let me give you an overview of the process.

  When you get a video acquisition method entry, it will be an image format. Essentially, it's a bunch of images that are updated at the speed of video capture, just like the material. There are screws express (wizard - like elements) that simplify the obtaining of images from your video source. With the drivers and measurement and Automation Explorer installed, you should be able to get at least the image.

  If you have IMAQ toolkit, I mentioned, you could just wire the reference image (a purple wire wavy) and a text input (say, a temperature that is converted to a string) in the text overlay VI and it would produce the desired effect. Without this, you will need to convert the Image into image (these are two different data types in LabVIEW) and use the image instead, editing tools (essentially replacing pixels in 2D image data). You would then update an indicator of the photo with your photo altered, if all goes well to the pace of the acquisition hardware. As I said this is less elegant and can take a certain amount of time processor. If you view these images at all and are just their routing, it should be slightly faster.

  I don't know about video production equipment, I mainly used entry Firewire or USB, the computer screen or the file data. However, if the driver exists, it should be possible, but a quick review of the functions doesn't seem to come with output functions. Cannot advise on hardware, but you can start with:http://sine.ni.com/np/app/main/p/bot/no/ap/vision/lang/en/pg/2/sn/n17:vision, n21:11600 /?

  Kind regards

  Mello