Load a sample project, or upload your own circular chart. If you do provide your own, don't forget to give it a name !
Finally, enter the Set Pen mode, then click on three locations along the pen curve.
A circular chart starts and ends at the same chart position, usually over a period of seven days. It also has minimum and maximum values associated with the inner and outer boundaries, respectively.
Note: if the chart you are using has two or more grid ranges, let us know ! We already have a solution for this type of chart.
Save the digitized result as text (csv) file or image.