Jump to content


  • Content Count

  • Joined

  • Last visited


Community Reputation


About psychomanu

  • Rank
    More Active
  1. Hello, I would like to see a probe with a timestamp to see WHEN data passes instead of the data itsself, for easy evaluation of the time spent between two points in the code. Or does anyone know an easier way than adding a tick count before and after and calculate the difference? Manu
  2. QUOTE (Michael Aivaliotis @ Apr 3 2009, 05:11 PM) The design I included was just to illustrate the principle. I'm aware of how to use error terminals to control dataflow. I disagree that stacked sequences are per definition bad practice. There are situations where I prefer a stacked sequence over a bunch of daisy-chained subVI's, especially when dealing with code that I prefer not to be in subVI's, like property nodes of front panel items or so. QUOTE (psychomanu @ Apr 3 2009, 11:54 AM) Now you need sequence locals for each step, and if you need to insert a step later on you need to
  3. You're absolutely right. But the very reason a stacked sequence exists is because a flat one sometimes takes too much space, and then a shift register would come in handy. Thanks anyway, Manu
  4. I would love to see a shift register in a sequence structure, to propagate an error cluster for example. Now you need sequence locals for each step, and if you need to insert a step later on you need to rewire things. I use local variables to propagate the error cluster, but that's 'bad practice'. Not so with this type of structure (this was made with Paint, just not to confuse anyone, it does not exist in LabView as far as I know): Looking forward to reactions, Manu
  5. Hi again, I posted the same question on the NI discussion forum ( http://forums.ni.com/ni/board/message?boar...ssage.id=136822 ) and they acknowledge that this is indeed wrong behaviour. So be careful when reading values from intensity graphs of large arrays! Manu
  6. Hi, We use intensity plots to display relatively large images (2Kx2K), which are quite noisy in some parts, and less in other parts. The problem is that the apparent average intensity in the noisy regions is too high. It is a display problem, because if you zoom in it dissappears. Just have a look at the included picture that displays noisy data (randoms between 0 and 1). As long as the number of pixels is low (relative to the number of pixels on the screen) there is no problem (left image). When displaying larger arrays you expect to see about the average value (0,5). Instead it prefers to
  7. Thanks for this elaborate answer. We realise we are at the edge, but we had hoped to be able to use at least the 2 GB. With a /3GB flag in your boot.ini you can tell Windows to allow a single application to grab up to 3 GB (we use a third party program that actually does this), but with LabVIEW we still get stuck around 1 GB. I guess we'll have to work in chunks of about 700 MB. That said, their is a function described in the code interface reference manual, called DSMaxMem (and AZMaxMem) that is supposed to return "the largest contiguous block of memory allocatable". However, it always re
  8. Hi, we have an application that needs an extremely large array of singles in memory (array sizes up to 1.6 GB, preferably more, size varies) With LabVIEW we can fill the memory only up to 1 GB (appr. 750 MB array, rest = OS) even though 4 GB RAM is present. With C we can go up to the Windows defined limit of 2 GB (appr. 1.8 GB array, rest = OS), so RAM fragmentation is not the cause of the 1 GB limit. Question 1 : does anyone know why the 1 GB limit exists in LabVIEW? Question 2 : does anyone know a way around this Question 3 : could we do the allocation in C and then let LabVIEW access
  9. Hi, I tried it, it works, but only if you have .NET installed. Not everyone has this, so I would rather have a way that works on all common configurations. Is there no API-call to kernel32.dll or something similar?
  10. Hi all, does anyone know how to get the CPU load without using ActiveX components? There must be some API-call for this but I didn't find it. Thanks.
  11. Hi all, We would like to read TIF format image files, but without using VISION routines because they require expensive licensing when we want to distribute our software. Anyone who knows where to find such a vi? Thanks.
  12. Hi, I had tried this before, but it requires knowledge of the IP address which I don't have. But I now realise that I can use as IP to find the local MAC, so thanks a lot, Manu
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.