Adding Static Trendlines to existing XY Plot

[hatchling]

Hey All,

I am attempting to implement some new code in an existing VI.  I currently have the ability to create an XY plot that "builds" whenever a button is pressed.  This works fine, but the data that ends up on the chart is somewhat useless without a reference line.

This will be used for DAQ work.  So hypothetically, I could have 5 strain gages hooked up to this chart. On the chart, I plot strain as a function of displacement.  The relationship should be linear.  As such, when I collect data at different points throughout the range, I should have points that more or less follow an expected linear function (aka a nice, straight line)

I have the data to create this "expected trendline", it is simply two points.  However, I cannot seem to come up with a simple way to both:

• Keep my existing plot, which adds "live" data each time I press the boolean.
• Add "static" (dead) trendlines to the plot that will always be present

I've tried a number of fixes, but each seems to get out of control.  For example, I created 10 different arrays, each containing the X or Y points to create the 5 different static trendlines, and then attempted to combine this with the existing chart, but the shear number of arrays seemed ridiculous.  Any advice would be much appreciated-

Below shows what I desire, and the current code I am working with.

This is my current plot.  Highlighted points in the top right and left show what I can currently create, these are "live" data points.  I'd like to be able to add in the "dead" static trendlines, shown in red and blue (poorly drawn in...)

The code I have, for the plot that "builds" with the press of a button, creating the points shown highlighted in the image above:

[GerdW]

Hi hatchling,

each plot needs its own dataset - just add it!

For your two lines you need to add just 2 points each as you use a XY graph…