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thols

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thols last won the day on March 17 2014

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About thols

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    LabVIEW 2019
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    1997

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  1. I want to give feedback, but its just so much. I did give feedback on 2.0 on a long list of issues on the beta forum but it was frustrating then to not know if there was any reason at all to give feedback. I don't recall even receiving anything that the feedback was received or anyone saying that they read the forum posts. I used 4.0 on a new small/tiny project but gave up since some simple things were not there yet (or who knows, maybe wont be) and I quickly had a new long list of issues but did not have time to document them, and I didn't know if there was any meaning at all in doing that. It would make it much easier for you and us if the development was more transparent so we could see per issue what is intended to work now, what will be implemented and how and the design decisions per feature. Now, this kind of information occasionally comes from different people in different channels (forums, blogs, summits, ...), which makes it easy to not know the state of NXG when you start exploring NXG x.x and thus get frustrated. If we could have access to this information we would know what to not get frustrated about and why and what you are open for feedback on, then we could help by focusing on giving feedback where it actually is helpful to you and then you wouldn't need to respond to all this frustration in different forums/channels. Yes, we all want NXG to be great, so let us help!
  2. This has been filed as CAR 455443 see this thread: http://forums.ni.com/t5/LabVIEW/Chart-Redraw-Issue-with-Multiple-Plots/m-p/2755616/highlight/true#M812948
  3. Hi, I hope this is the right place to post this. Please take a look at the attached VI to see an issue I'm having. If you have any ideas, please share. I managed to find a partial workaround to this issue, but the behaviour looks odd and bug-like, and sweep mode still looks very bad. Background: I wanted to use charts to create the most efficient way of displaying data, since I need to display several plots with high update frequencies but of varying sampling frequencies. Before plotting the data, it is already decimated so I will only plot as many points as I have pixels available. Scenario: Plot 2 waveforms periodically to a chart (array of wfms for each period). Use scope or sweep mode. Strip mode seems to work a little bit better. Issues: * If one plot in a wfm-array is empty for an update, the other plot will not redraw properly. It will redraw when the second plot has data but the first plot will be incorrectly drawn, parts of the data/points will be missing. * Sweep mode will leave lots of red lines and erase some of the data it is passing. Attempted workarounds: * ForceRedraw: Does nothing. Am I using it wrong? * Defer FP: Does nothing. * Remove empty wfms at end of wfm array (for one update/iteration): - draws first plot correctly - does not draw line on second plot - If window is resized, data is cleared, only the last section of the plot is visible. Seems like earlier data in plot is "forgotten". - Autoscaling will not work. It will autoscales on the last section of data. * Increase history lenght: Does nothing. * Put an indicator in front of the graph: Screws up redraw until window is resized. Graph update gets very slow. I used this trick once on a flickering text indicator and placed an invisible object in front of it, which helped in that situation. * Resize the window: Works! Not a very convenient workaround. Even sweep mode looks ok. * Use XY-graph: My goal was to make the most efficient way of displaying data with relatively high update rates. I Used an XY, but when I had a few of those graphs, the cpu load was very high, and I verified that it was the actual writing to the graph indicator that took all cpu. I tried updating less frequently and I already have the data decimated before sending it to the graph, but the cpu was still too high. Replacing with chart work like a miracle with almost no cpu-load * If a wfm is empty for an iteration, plot the last plotted point again but with a very small positive time-offset (I think it didn't work well plotting with the same time again): graph redraws ok in scope mode but not in sweep mode. But If I plot that last point again and again, the other plot will eventually cause the x-scale to autoset, and I will need to keep track of the scale and not re-plot that lone point if it falls out of the x-scale. It starts to get tricky here and I have not solved all issues that can arise here yet, but this is the workaround I'm using now. And For charts, I haven't found a way to disable that automatic scale update (is there a way?). I have made and test VI for testing these issues (attached), where different workarounds can be tested by activating different buttons. Just run it in the default setting to run it without workarounds activated and it should show the refresh issue quite clearly. I have tested this on 2 PCs and on LabVIEW 2013, 2012, 2010 and 8.6. Any ideas? Chart Redraw issue - LV2013.vi Chart Redraw issue LV 2010.vi
  4. I tried creating a control, but no matter what I do, state 2 and 4 is not scaled. Those pictures are only offset. It seems like they are correctly offset to handle a scaling, but the scaling is not done. I tried reinstalling the Controls addon and Bitman, but the problem persists. I tried on LV 2010, -11, -13. Any ideas?
  5. Sorry for my very late reply. Forgot to check the topic and had not set up to receive emails for replies. Your zip file works. I don't remember now if there was any control templates installed in the package. Should there have been? I downloaded some templates but I don't remember them containing any "pdn" files. Perhaps that was the problem. Sorry that I don't remember anymore and cannot be of more help right now. I will surely check out your tool a bit more now.
  6. Looks like a great tool. I got it working with 2010, but 2012 and 2013 generates corrupt ctl-files. Any plans on updating support for newer LabVIEW versions?
  7. Sure, rub your shoes on the carpet and then put your finger on your co-worker's ear. That'll shock him with electrons floating in a controlled fashion in the air
  8. I have on different projects had to use Excel ActiveX. My experience is: avoid it, you will get into trouble. The troubles are not unmanageable but frustrating, especially if you need to support different versions of Excel, different languages/localisations, and even different installation options. Maybe you know that you need to use ActiveX, but if you do not, consider using for example a tab-delimited text file, which Excel can read.
  9. I've seen this behaviour on LV8.6, 8.5 and 8.2 (I'm pretty sure). When I make an exe I get the same characters you do. What I have done to fix it is just to simply restart LabVIEW and build the exe again, the It works. I have tried recompiling to, you might wan to give that a shot. I also tried removing all but English support and specify the font, but to no help. Must be a bug, but since I get this bug just when I have to deliver my exe and are under stress, I haven't looked into it further.
  10. You will need to keep the VI that opened the telnet session running (not just kept in memory). I had the same issue and found some threads here and on NI about it. To tired to explain why. Give me coffee. Try it.
  11. Try building an exe of a VI containing an "Open storage" express VI. At the Open storage node, LV will crash. I tried changing the path for the storage file to a folder with full access and using "run as administrator" on the exe, but that doesn't help. XP works fine. Can this really be true or is my LV runtime corrupt? Vista LV 8.5.1
  12. Did some :headbang: with the same bug in LV 8.5. BUG: The Cursor value is ignored and another value, many indices earlier in the array, is used Hint: If I zoom in on the graph, the set cursor is more accurate.
  13. Thanks for the reply. My begging for help made you a member, YES! Since the Visble property returned an error I haven't tried to set it to True, but now I did and I could see that although the properties return errors, some properties still do what they should. Others don't . I have tried to bypass all bad functions and still do what I need, but there seem to be too few working functions. The other tips you gave are good, I already use them. If I find a solution I will post it, but I'm leaning towards convincing my customer that its cheaper to upgrade msOffice.
  14. I'm struggling to get Excel97 working with ActiveX. Excel2000-2003 works fine, but Excel97 just won't work. I've read all the forums and articles about issues with Excel and ActiveX and tried the solutions I found. I would just like to know if anyone have used Excel97 (Microsoft Excel 8.0 Object Library Version 1.2) and ActiveX, and if so, how did you get it working? A simple thing like doing like this picture below will give an error 3005 on one PC (at automation Open), practically random errors (!) on another (At the property node), and "the server threw an exception" on a third PC (at the property node). A few properties actually work when I don't get error 3005, like "_Application.Caption". http://forums.lavag.org/index.php?act=attach&type=post&id=6628 I've tried a fresh install of WindowsXP with LV 8.2.1, LV6.1 and Excel97. Updated to Office SR-1, but that doesn't help. Then I tried to update to SR-2. SR-2 install will fail claiming my Excel-version is of base level, althoug SR-1 says it has updated Office97 if I run it again. The SR-2 logfile says Excel.exe is of Office base version. I Also tried all this on Win2000. I guess it's possible my original Excel97 is corrupt somehow, but I haven't found another copy of it. If you have used Excel97 and ActiveX-automation, please let med know what system setup and Excel97-version you have or how you got it working. If you have any idea of what could be wrong, please share your guess. If you can think of another way of inserting data into different sheets to Excel97 and formatting the cells , please let me know. Excel97 doesn't seem to support either xml or .net.
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