DPlot

You recently provided help with my use of manual scaling of contour plots (thank you very much). I would like to add a few circles to the contour plot. Do you have any sample programs that illustrate how to do this?

Thanks in advance

Can't be done, sorry. (At least not in DPlot). Surface plots are currently restricted to 1 data set, so there's no way to add another data set with, for example, constant Z values along a circle in the XY plane. And there's no way to add generic drawing objects like circles to any graph. The former (multiple data sets) is on my to-do list. Adding drawing objects... if it ever gets done it will be a good long while from now.

Thank you very much for your prompt response