Reg: variance

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• my PC Backup, Reg Clean Pro & Research protect all piggyback on my Installer Firefox 26, for which I had to replace my Norton caveat regarding security issues.

  my PC Backup, Reg Clean Pro & Research protect ALL grafted onto my Installer Firefox 26, for which I had to replace my Norton caveat regarding security issues.

  Based on your research, I also substitute a Norton Security warning.

  I have windows 7 and complete Norton Security

  You downloaded firefox from the official site. Sometimes the software gets supplied with malware or adware, as in your case.
  In some cases, I recommend uninstalling (your software also mentioned), FF data directory deleting and then reinstalling FF of mozilla.org

• Protector suite Reg Keys

  No one knows what the reg keys are created when you enable start of fingerprints? Or how to change the registry to reactivate without the Protector Suite software?

  And what is the reason for this?

• 'Variance PtByPt.vi' generates values of negative values for some input

  With certain sequences of input values the Gap PtByPt.vi can generate negative values. It is because of the precision in calculations.

  Because it is very common to calculate the gap by taking the square root of the variance, this behavior can take you by surprise because the result will be Nan and not almost 0 you expect. According to the data, this may be frequent or very frequent. In general, a nuisance to debug.

  The remedy is simple: take the Abs() before the square root value. A vi that demonstrates the case is attached.

  I would suggest to include this correction (or similar) in the "Variance PtByPt.vi' because it gives rise to unexpected and hard to find errors.

  By definition - variance cannot be negative.

  

  

  CAR 446514 discussed in this thread has been corrected in LabVIEW 2014.  For a more complete list of bugs fixed in LabVIEW 2014, see 2014 LabVIEW bugfixes. You can download a copy of LabVIEW 2014 evaluation at http://www.ni.com/trylabview/ or if you have a previous version of LabVIEW installed and an active subscription to SSP, you will be able to download the latest version of LabVIEW through NI Update Service.

  Kind regards

  Jeff Peacock

  Product Support Engineer | LabVIEW R & D | National Instruments | Certified LabVIEW Architect

• FPGA "mean, Variance & Standard Dev ' VI

  Hello world

  I use the express VI 'average, Variance & Standard deviation' through the vessels: 130 samples of a given signal.  When I run the program, the Boolean value "True output" is always false.  Does that mean exactly?  The output looks like valid... This VI documentation is pretty poor.  Someone can explain what that output tells me?

  Thank you!

  -Alec

  

  Hi Alec,.

  OK, I now see the source of confusion. This VI does not support running averages - that's what we've been referring to as "image-based", producing a single measurement for every 130 incoming samples result and a single pulse of the valid data for every 130 samples of output. This mode of operation is similar to the screws based on the Bay (Mean.vi, etc.) in mathematics > range of probabilities and statistics, that take a table and a scalar output. The only difference is on the FPGA, we need to disseminate, in the table, a point at a time. That ye (a reasonable expectation) is analogous to the PtbyPt.vi means that takes a scalar input and updates the average result on every call. We have implemented the version based on the first frames because it avoids the need to store all of the table. To see exactly what we do on any of these screws, just right click on the node and select "Convert to the Subvi", where you can consult and/or modify the code to suit your needs.

  For an example showing a similar operating mode, you can view the example analog period measure (measure Control\Period and examples\R Series\FPGA Fundamentals\Analysis). This example shows an external logic added to lock the result for each period measure - that you have already seen, it is not necessary for average, Variance & gap since this locking is done in-house.

  If the documentation clearly explains the behavior above, which should meet your needs or is there anything else you would expect to cover?

  I'll submit requests for corrective action on the absence of an example and documentation for clarification.

  Thanks for the comments!

  Jim

• ActiveX - Reg - led event reminder

  Hello

  I'm building a control for a Laser machine which based its controls in the ActiveX control technology. I had a program in c# that works, but I have because I wanted to change the settings and then connect it to another program Labview, I "translate".

  I start with a very simple operation:

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  2. "load" a design for the laser.
  
  
  3. program of the "end".

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  If the "QueryStart" laser signal is activated by a switch, then "run" program.

  If the laser "starts", then light a led

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  I have problems to light a led by using the ref (LaserStartedLed) VI. I'm using as a model the Labview example: CWKnob to see a number from the button. But in this case, they use the numbers from the button, in my case are just Boolean, and I try to get data from common event.

  Can you help me with other ideas and corrections?

  Thanks in advance,

  
  

• Return data of an event Reg to appellant VI reminder

  Hello

  I'm new to LabVIEW and approach it from a c# programming background. I have a DLL written in c#, connected library and a reminder of event Reg .NET listen to an event in the DLL. That part works. I can receive an integer of my DLL when the event fires - well.

  However, having this available only in VI integer that is referenced by the event Reg reminder doesn't help - I need to this integer passed back to appellant VI so that I can work with it. I tried a digital indicator to an exit in the Subvi of wiring, but it generates a conflict of function on the wire that connects the strictly typed event with Ref VI reminder. Please see the attached illustration.

  Help, please!

  These "yellow blocks" are all the range of events under "Dialogue and User Interface. They create the user event, generating the user event, destroy the event user and Unregister for events.

  EDIT: see also this thread for example code, you can download: http://forums.ni.com/t5/LabVIEW/How-to-interaction-with-Main-VI-from-Net-event-callback/m-p/2954265#...

• Add the .reg file to Installer (book section)

  Hello!

  My app needs a few pieces of information placed in the Windows registry. When developing my application, I built myself the architecture of register that I need and it extracted in a .reg file. When I need to change some keys, I edit the .reg file, and then click Zoom to deply the update.

  I'm currently building an installer to distribute my application. Is it possible to import my .reg file / registry architecture in the section 'Register' from the Builder installer instead of rewriting everything in this interface?

  Hi Zyl7,

  It also allows .bat files that allow the script as the windows command prompt and so could be used to launch a number of other executable files.  There are a number of websites that can show you how to make that http://www.computerhope.com/batch.htm.  With this, you should be able to use the command to add the registry keys and then launch another executable file.  Here's a convenient way around the single executable problem.

  Kind regards

• FPGA - windowed moving average, variance, standard deviation, kurtosis and asymmetry

  Hello!

  I'm processing in FPGA and I want to calculate the MOVING WINDOW average, variance, standard deviation, kurtosis, asymmetry online for the last N (N is the size of windows) elements. The frequency is about 100 kHz and N about 10000 (100 ms of signal).

  I found something like EMA (moving average exponential)...

  Have someone solved something like that? Any ideas how to fix?

  That looks like a problem. What type of window you need? The moving average exponential isn't an option? There are online algorithms described in Wikipedia, but they can suffer from problems of numerical accuracy when it is implemented in a fixed point (depending on the nature of the data). They would be interesting watch in, however.

  Other than that, here are some options that I can think of:

  • More large FPGA
  • Be part of the treatment on the RT controller - have - you looked into that?
  • Return to your needs and push some of the numbers. Do you really need 100 ms in all cases, etc.?
  • Depending on the nature of the data, simple compression techniques may be an option
  • An precision analysis to determine the data type minimum, that you really need. For example, getting to 25 bits, would have a huge impact on your cost of multiplier.
  • Consider the mathematics of floating (using Xilinx IP cores) point to online methods. Your flow is relatively low, so you could share it resources between all channels. Manage States of different channels is complicated but is doable.

  The BRAM will be used for FIFO buffers, but is also available for general use to implement the fifo and memories. Some IP use BRAM under the hood, keep an eye on the compilation summaries to monitor how much still you have.

• Of-Rube my code please Reg Expression maybe?

  Hi all!

  I will avoid solutions based text, but after looking at my code, I thought I can get a chance to learn a better way to do it.

  Problem:

  In LV 8.6 there is a problem when an individual 'node' in a VRML file result LV to crash if I try to open a file containing this node.

  Solution:

  Wirte code to check the file and remove the cruelest bad 'node' of trying to open it.

  IF this code works, but screams "This could we better using Reg expression?"

  

  I think the picture tells the story.

  NOTE: The case of non-visalbe just do the wires.

  THEN, share your thoughts please.

  Ben

  Even better than my original.  This is the beginning of the selection followed until the first byeverything '} ' (and line break).

  

  Kudos to ben64 for the tip.

• Variance of a set of data in real time

  Hello

  I'm continually acquire a set of sensor data through LABVIEW with a sampling frequency of 100 Hz (100samples per second). What I want to do is to find the variance of the data set every 0.1 s. Im collecting data of sensor acquired in a 1 d array 'SensorData '. Then wat I want to do is every time 10 new samples are collected, I want to find the variance. I tried to use the ptbypt of variance but it always returns a value of 0.0

  Your help is greatly appreciated.

  Thank you!

  Stéphane

  What is the length of the sample that you have specified in the Variance PtbyPt vi? Did you check the initialization status?

  Exactly how you call this Subvi?. To obtain a variance of 0.1 sec output, you can set the length of your sample to 10.

  Could you post a VI that displays this value?

  If you see 0,0, try to expand your digital indicator, there could be an exponential value at the end

• HP Envy 15 Notebook PC TS: How to remove Trojan: Win32/Kovter.C reg for good

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  For more than a week I get alerts with Windows Defender that my laptop is infected with the Trojan: Win32/Kovter.C reg. Whenever I choose to remove it, but he continues to show the Trojan horse after each successive scan.

  My Internet Explorer seems to be damaged and non-functional (Chrome works great) and whenever I try to listen to music, the speaker transforms itself mute after a few seconds.

  How can I remove this Trojan horse apparently very dangerous for good? Is there a software to remove known spyware free that I can use. Or do I just restore my pc to an earlier date before the problem started?

  Thanks in advance

  ANI

  @anihokis

  Right here, you were able to remove them.

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• Outside regs, reg 1239 compiler error

  I installed LV2009 and trying to open the version 8.6 vi.

  I get a message "compilation error. Report this problrm to Technical Support from National Instruments. off-regs - no release candidate has found, reg 1239! »

  32-bit client of Labview on Win 7 64 bit and Win Server 2008 64 bit give the same error.

  The attached code.

  Technical support NOR suggested installation LV 2009 service pack 1, which fixed the problem.

• LabVIEW 2010 FPGA: problem with the mean and the variance Subvi

  The Subvi 'Average, Variance and standard deviation' seems to not work properly. The calculation of the average value is ok but std and variance are bad and the results change with representation in an unexpected way. Everyone knows about this problem? Is there a problem with the use of this function?

  Thank you

  Andrea

  Hello Andrea,

  Here is a test for the configuration of your VI (entered I16, 16 samples), saved in LabVIEW 2010 SP1 and the new Subvi. It is relatively simple to adapt it to other configurations, but it does not reconfigure several nodes and constants on the diagram. Let me know if it will work for you.

  Kind regards

  Jim

• Variance of 20 samples at a time...

  Hello

  I asked a similar question before, but now the functional requirements have changed so I need to change the vi...

  This vi must calculate the gap data in 'chunks' of 20 points (or whatever the user wants), if the gap is greater than the threshold value it should start to calculate the difference between data points in the "block". Once he meets a difference that is greater than the variance is allowed (the threshold), what time is assigned and adds 1 to the loop counter. In the end, a total counter is compared with the threshold to see if he could not or not and that he must write time entries in a .txt file.

  For the moment, I see a problem - the variance is always equal to 0, and I don't know why.

  I appreciate any input about the obvious and any other problem you see.

  Thank you