LabVIEW
How I do a 3D surface graph with a history ? There's my vi.
You need a shift register around your loop that's reading the data so that you append that iteration's data to the previous set of data, and plot the corresponding cumulative data.
That said, there's a few "peculiarities" with your VI:
That said, there's a few "peculiarities" with your VI:
- You have 3 while loops and 1 for-loop. One of the while loops only runs once. The while loop that's reading the data is set to run forever. No way to stop it other than pressing the Abort button on the toolbar. This is not a good way to stop.
- You seem to be trying to make a timed for-loop. Perhaps you want the Timed Loop structure?
- In the while loop that's running just once you're generating a sine waveform, but sending the data to a slider that will only display the last value.
- You should not be constantly closing the VISA reference. Close it at the end of your program.
- You don't need to have that big long constant inside the while loop. That just causes the while loop to stretch out. Just place it outstide and tunnel it in. You can even resize the string constant.
- In your loop that's running just once you don't need to use the "Convert From Dynamic Data" in order to do the comparison function. Just wire the waveform wire to the upper node of the comparison function, right-click on the comparison function and select "Comparison Mode -> Compare Agreggates".
