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About Zyga

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LabVIEW Information

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    LabVIEW 2011
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  1. We did such a thing for dalsa camera. It indeed require to write wrapping functions, but there is a help which describes how IMAQ image is stored in the memory so you should be able to cast vendor image format to LV IMAQ. If you do not need any suphisticated camera and acquisition control this library is pretty basic and I have used it with success. I might be missing something but I do not think that OpenCV has a good cam acquisition support.
  2. Hello, On a debug purposes I would like to open reference to a privately scoped vi from outside class (or from parent class vi). But while I am trying to do this I am getting error 1390. Which makes all sense. But is there any way to walk-around this? Without ofcoure adding code to the class. I see that Caraya developers has encountered similar issue and did not resolve it. Anyone who has an idea? Thanks for your help.
  3. Thank you for your answers and sorry for not being here for a while. Based on information from you, I have achived what I needed, but there are still things that are mistery for me. That was my thinking before I wrote this post. But it somehow did not fit to what was happening in my project. I was loading a class, changing its VI properties and then call this VI using dynamic dispach mechanism. It wasn't modified as I expected. So I suspected that LV preallocate clones for dd VIs while loading class (and I wrongly assumed that those are VI with "instance" suffix). And this would
  4. I wonder if someone has found a way to retrieve reference to a vi that is overriding method and has reentrancy set to shared clone. What exactly I am trying to do is to change properties of this VI controls by using externally opened reference. Actually I would like to localize FP at application loadtime (without placing code on "to be localized" VI blockdiagram). When I list all VIs in memory I get stuff like this: sDataAcquisition.lvclass:editWindow.vi:Instance:6cc60448-8771-4aea-ad60-5635b7cb9c6a.vi sDataAcquisition.lvclass:editWindow.vi:Instance:b60c6bed-8161-4566-ab34-ae4092625b90.
  5. I do not believe this is a disadvantage. Serialization is special... if the parent is not serializable then the child is not serializable. Requiring inheritance from a base Serializable does not seem to me to be a bad requirement. Even in other languages where serialization is an interface, mostly they have to add special syntax checking to make sure that the interface is implemented by the eldest class or else it doesn't work. Serialization isn't functionality that can be injected on a descendant level. It's all or nothing to be meaningful because failure to preserve parent state means you ar
  6. From what I see they are not. Correct me if I am wrong, but this lib enforce "serialize" method to be overwritten and then calls it through whole hierarchy. Disadvantage of that solution is a need to change inheritance. Ok, but enough of moaning. We will use one of existing solution. Just wanted to point out where retrieving ancestry list would be useful (wonder why this information is not in the class flattened string?).
  7. I was looking for getting ancestry list at RT solution for a while. Found few posts, did some coding - no success. I just reply to this old post as @Aristos Queue asks why would someone need that information. I wish to flatten/unflatten object to other format than xml. Surely this post is a grate start, but still unable to get TD even whole data is there. If flatten/unflatten to xml function can do the job, there must be solution hidden under the hood.
  8. Zyga

    NI DAQ alternatives

    These are questions that have to be answered before every single project. And assumption is that if I choose decent vendor, he will provide me with any of above options (I wouldn't dare to demand DIO96..). More important for me is to find solution tested with pc based systems.. With NI I am sure of community and NI support. Whole bunch of pitfalls already discovered and resolved or walkaround found. If about LINX license, this is plainly answered in FAQ authors site. So Yes, you can use LINX to programm arduino for commercial usage.
  9. Zyga

    NI DAQ alternatives

    We do not have strict requirements. This question do not apply to any specific project we are going to implement in near future. This is question in general, but basically I cant think of something that 100Hz, single point measurement wouldn't be sufficient. Actually we have few industrial eol testers based on Windows PC + cdaq, and they works perfectly well. These are not always harsh environments and cDaq does well. Few matters which needs to be balanced and analyzed carefully. Depends on many factors really. Surely if you would have had few implementations over year, you
  10. LAVA users, We are looking for alternatives for NI DAQ devices for industrial automation. Since NI has its devices mostly focused on advanced/high speed/high precison data acquisition/processing its prices are inadequate to simple automation tasks. I would also say that NI PC based daq systems are expensive if need to be distributed systems (found this but still relatively expensive cRIO required). Just now we need to extend our compactDAQ based system with two DIO modules. We even have free chassis slots for this, but station that needs this IOs is few meters away from PC. How easier w
  11. Hi, I think you might want to read this paper. I am afraid that if you do not have access to the dll sources you will not be able to retrieve this data correctly. At the first place I would split up complex data into simpler types, then pass it to dll as separated arguments. That will make things easier in your dll code. Regards, Zyga
  12. OK, If you will not be able to do so, it is not a big deal, at least I know that it is possible
  13. Hello Porter, I've been looking on this library for a while, but I wasn't able to make it work with labview. Would you share your code? Zyga
  14. Tested and it works. With multiple images stored in a single file it doesn't work. Looks like win uses them just for better apperance. All of them list in the resource hacker as a single group. When we take a look e.g. on LabVIEW, there is a group for a single file type icon. Nevertheless specifying icon path explicitly solves my problem. Thanks!
  15. Hi, I would like to associate icons with file types that are handled by a LabVIEW built application. To do so, "defaultIcon" key has to take a value of executable path with parameter "resource ID". The question is how to build in more than one icon with executable? Examples of LabVIEW keys: -library: ..\LabVIEW.exe,-8 -llb: ..\LabVIEW.exe,-3 Is it even possible with app builder? Any workaround?
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