I have one graph of streaming voltage and another graph of a simple boolean function which jumps from zero to one when a button is pushed. I'd like to have both lines of data display on one graph. The goal is to have an even marker for the voltage graph - pressing the boolean button would "mark" important data points during acquisition. How do I combine the two? (I tried putting both into an array and graphing that, but it seems to just average the two instead of plotting them separately.) Thanks.