Daryl Posted February 19, 2016 Report Share Posted February 19, 2016 (edited) This one is driving me nuts. Add digital display to Waveform Graph and the digital display will intermittently spike to 0 even though the data feeding it does not. The plot on the graph will actually spike to 0 also but it does not always drop when the digital display does. For some reason the example I have attached does not show the issue on the plot, only the legend digital display, but it does happen on the application I am working on. The Waveform Array indicator does not display this same behavior. What am I dong wrong here? Using Labview version 2014 If you change the loop rate to 200ms it is much easier to see waveform graph issue.vi Edited February 19, 2016 by Daryl Quote Link to comment
Yair Posted February 21, 2016 Report Share Posted February 21, 2016 LV 2015 - changed the loop rate to 200 ms and ran the code for about 30 seconds - the sine wave oscillates around 2, without dropping to zero, so I would guess something was fixed. That said, I have pretty much zero experience with the dynamic data type (I prefer types I understand), so I suppose it's possible something is happening there, but I would expect you would see the same values in the array indicator (presumably you would have to make large enough to show all the values). Quote Link to comment
ShaunR Posted February 21, 2016 Report Share Posted February 21, 2016 Yup. I can see this too with your example (@200ms). Tried it in LV2009, 2014 & 2015 and they all exhibit the behaviour. Looks like a Graph Indicator bug since the using a "Convert From Dynamic Data" set to "scaler" and placing an indicator doesn't do it. Quote Link to comment
Daryl Posted February 22, 2016 Author Report Share Posted February 22, 2016 It also happens with the waveform datatype, so it is not exclusive to the Dynamic data type. Quote Link to comment
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.