Not a number/path/Refnum? Does not work with a reference SE

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• Refnum control is not a number/path/refnum

  Hi all

  I'm working on a LV7.1 program. It has a control refnum on the façade. If this control is not signed by the appellant, the follow-up 'Not a number/path/refnum' will return TRUE. It's like a 'default'. But I don't know how to implement this function. I mean, I can't find a way to set the control of refnum with a default value as "not a number/path/refnum". Can someone give me a hint?

  Thank you

  stable

  Under file e / s-> constants file, there is a constant "not a Refnum". (Why under file e/s? Do not know?)

  You can change your control to an indicator, it wire up to now, the VI run once and then change things at the back (you now have not a Refnum value).  You can then make it worth stick by right-clicking on the control of data operations by choosing-> do default to the current value.

  This assumes that the control has managed to be pre-initialized with one value other than not a refnum.

• Impossible to check the FPGA reference with "not a number/path/Refnum?

  How can I check if an FPGA interface refnum is valid?  It seems (LabVIEW 2009) that "Not a number/path/Refnum?" always returns true when connected to the output of open FPGA VI reference.  I write code that needs to be able to run without an FPGA for testing purposes, so I wrapped all calls to the FPGA in a case structure that I thought would run only if the FPGA reference is valid.  Turns out that they run ever, even when the FPGA reference is valid (probe shows it has a numerical value, and the FPGA VI is running).  I guess it's sort of similar to semaphore and appointment of references that have their own special function to verify the validity, but I do not see such a function for FPGA.  I have to cast to int and check if it is not equal to zero?

  
  

• Not a number/path/refnum simple Boolean?

  Y at - it an easy way for not a number/path/refnum return a single Boolean value telling if the entry had NaN // any where in its structure.

  I have a cluster of clusters of references I want to validate but I can't find an easy way to convert something that I can get a single Boolean of the structure. If only there wasn't a single cluster I would convert it the cluster in a table then or the elements of the array to see if it had references not valid.

  

  I did the examples above with NaN because it is easier to show than references.

  If I'm not mistaken, the in-memory representation for a cluster of clusters of Boolean data should be the same as a 1 d of Boolean array, so I think you should be able to type cast to a 1 d of Boolean array, you can then OR.

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  Download and install the trial version of Lightdroom CC.

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  Thank you

  

  I wrote this VI in order to study how to integrate a Joystick into my LabVIEW code (I called the "Joystick Sampler" VI).  It has two parts - the lowest fact function, "Query Input Devices", an array of devices, their names and the number of Axes, buttons and POV "hat", in a table called "Joystick Info".  Look at this attention first, in pay to the array Index that seems to match your gamepad, when plug you it into a USB port.

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  BS

• No-a-Ref does not work with audio files?

  I use LabVIEW 2013 32 bit under W7 - 64.  When I open an audio file and you write for, for example ref is valid, Not-a-Refnum? function returns True.  Is this a limit known audio file?  The same is true with the example program OR 'His file to the Output.vi' when an audio file is opened in read mode.  The works of VI, but the Not-a-Refnum? is set to True.

  DaveT

  This is a known limitation. The screws of Sound do not use a real LabVIEW refnum, they take advantage of just the type of file refnum to conceal their own internel reference as a LabVIEW refnum That has the advantage that you can wire not accidentally other refnum or integer to these screws, but that it is not working with the primitive IsNotA Refnum(). The node RefnumToPath in any case never could work, even if these screws used a real refnum of LabVIEW, given refnum would be a refnum of Sound specific resource, not a file (normal file or datalog) Refnum, which is type single refnum where the Refnum of the function of the path runs on for pretty obvious reasons, like other resources in LabVIEW are not a valid path.

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  Update: I spent 2 days looking how to get this resolved. Of course, 5 minutes after I ask this question, it happens to me on this: https://helpx.adobe.com/content/help/en/creative-cloud/kb/acrobat-dc-uninstalls-acrobat-11 .html , that solved my problem and my installation began through the application of CC desktop, rather than a separately downloaded .dmg file as before. Note: After clicking on the button 'Download Adobe Pro XI', next steps called "Adobe DC", but the end result is an installation Pro XI.

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  The entire application does not work with Firefox.
  
  I do any customization for Firefox and IE8?
  
  Error messages (such as reported by IE8):
  
  
  
  Webpage error details
  
  User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152 .NET CLR 3.5.30729;. InfoPath.2; .NET CLR 1.1.4322)
  Timestamp: Friday, October 22, 2010 07:49:27 UTC
  
  
  Message: Not terminated string constant
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  Char: 78
  Code: 0
  URI: http://127.0.0.1:8080/apex/f? p = 4550:1:2607772430187012
  
  
  Message: Invalid character
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  Char: 1
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  URI: file:///D:/apex4.01/apex/images/libraries/jquery/1.4.2/jquery-1.4.2.min.js
  
  
  Message: Invalid character
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  Message: Invalid character
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  Online: 89
  Char: 1
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  URI: http://127.0.0.1:8080/apex/f? p = 4550:1:2607772430187012
  
  
  Message: Object EXPECTED
  Online: 46
  Char: 1
  Code: 0
  URI: http://127.0.0.1:8080/apex/f? p = 4550:1:2607772430187012
  
  
  Message: Object EXPECTED
  Online: 46
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  URI: http://127.0.0.1:8080/apex/f? p = 4550:1:2607772430187012
  
  
  Message: Object EXPECTED
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  Message: Object EXPECTED
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  URI: http://127.0.0.1:8080/apex/f? p = 4550:1:2607772430187012
  
  
  Message: Object EXPECTED
  Online: 46
  Char: 1
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  URI: http://127.0.0.1:8080/apex/f? p = 4550:1:2607772430187012
  
  
  Message: Object EXPECTED
  Online: 46
  Char: 1
  Code: 0
  URI: http://127.0.0.1:8080/apex/f? p = 4550:1:2607772430187012
  
  
  Message: Object EXPECTED
  Online: 46
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  Code: 0
  URI: http://127.0.0.1:8080/apex/f? p = 4550:1:2607772430187012
  
  
  Message: Object EXPECTED
  Online: 46
  Char: 1
  Code: 0
  URI: http://127.0.0.1:8080/apex/f? p = 4550:1:2607772430187012

  Hello

  Path of the image must be
  You have wrongly last set in the installation script

  You can reset the path of the image with the reset_image_prefix.sql script.
  Run the script as SYS. When he invites new path enter

  /i/
  

  After this you may need to download images again to DB with the apxldimg.sql script

  Kind regards
  Jari

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