So I need to create a CUSUM control chart and would like to use ChartJS (https://www.chartjs.org/) to do so (example here: https://www.spcforexcel.com/knowledge/variable-control-charts/keeping-process-target-cusum-charts). Basically this chart has a standard line graph but with an upper target (control limit) and a lower target marked to show when the line has moved outside the desired range.
Is this possible with ChartJS and if so how? I have looked at the examples and I'm not seeing how to do it.
