title: Issue updating labview waveform chart
body: <p>I have a labview program where I am collecting data at 2 Hz. I have 8 channels of data I need to plot on a waveform chart. However, due to the program needing to be ran for long periods of time, I run into issues with memory and storing all the data on the chart. I would like to have it be a user input update frequency, but I cannot figure out how to do it. I tried passing the data in through a loop, but it would never execute. </p>
  
  <p>To paint a clearer picture, I want to plot every other data point or further in between. I don't need all the data points on the plot. </p>