simple scatter chart - line chart without lines
Sometimes you may just want to plot points rather than lines (or curves) on a chart.
A feature of the lines chart is that we can break the lines by sending a null or false as the payload, so we can break all the points into pieces by using this trick.
The simple way to do this is to use a trigger node to pass though the original message and then also send a boolean false a few milliseconds later.
You will also need to tick the enlarge points option in the line chart so that the points are visible.
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