in the attachment you can see a plot of tendon-force over tendon-length made with ChartFX 2D tool (data are from gait lower extremity example file). So far, so good. But when i export the force-data and length-data to excel and make a chart it looks very different from the chart created with ChartFX.
I think the problem is how you intepretate the decimal separator in Excel. Please check the output of ChartFx and see if it uses , og . and make sure that you use the same decimal separator when reading the file into excel.
Michael Skipper Andersen
The AnyBody Research Project