Thank you for your excellent response. It now works as expected! However, how do I make plot only use the values x=2..20 in the outputted coordinate system? Right now it seems I also get the intermediate values plotted, for example x=2.20.

Thank you for your excellent response. It now works as expected! However, how do I make plot only use the values x=2..20 in the outputted coordinate system? Right now it seems I also get the intermediate values plotted, for example x=2.20.