I have a waveform chart being used in an application. In the
sequence of events, I first create upper and lower limits to display on
the chart based on a tolerance. This means that I've set up the
chart with two plots before the program begins, and I'm only showing 20
seconds worth of data to the user at a time (the run may be up to 1200
seconds). When the user hits the run button, the tolerance limits
are pulled from a file, then displayed on the waveform chart, and the
chart begins at time 0.
Once the program starts, I need to add a plot to the Waveform Chart
that will visually show the user where they are in relation to the
tolerances that have already been plotted. This plot contains a
frequency value read from a counter input. My question is - how
do I go about adding this plot to the waveform chart while keeping the
upper and lower tolerances displayed on this chart? I've looked
through the property nodes, but can't find anything related to plotting
the value in relation to time.
I've attached a screenshot to provide some idea of what I'm trying to
accomplish. The upper Waveform chart shows the upper and lower
tolerances. The actual plot I want to add won't show up during
the run, but once the run is complete, the user will be able to use the
X Scrollbar to roll back and see the actual trace. I am working
now on an indicator that will provide an arrow to show the user where
they are within the Waveform Chart. The bottom graph shows the
entire run of the trace, along with cursors, that provide the user with
a point of reference during the test.
Thanks for any help!
tsc
